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Cylinder head bolt loosening sequence


cylinder head bolt loosening sequence Replace cylinder head gaskets with new ones. I am doing a head gasket repair on my EX model and I wanted to know the bolt sequence on taking the head bolts off and putting them back on. Uniformly loosen ad remove the ten bearing cap bolts in several passes in the sequence shown and remove the five bearing caps oil seal and camshaft. 39. Using the sequence shown remove bolts and the intake manifold. When it comes to heads with hold down bolts there are three basic types The cooling jacket which clamps a cylinder liner down into the crankcase. Install the intake gasket. The cylinder head bolts require a multi step tightening sequence. Main Torque. It depends on the installation. This first sequence sets the gasket. Loosen the air duct retaining clamps at the throttle body and the air nbsp On the front cylinder head loosen and then torque each rocker shaft bridge bolt one at a time in the sequence shown above. Replace the Cylinder Head Gasket on the Cylinder Block. On assembly apply fresh engine oil to the washers threads and flanges of each large cylinder head bolt. 153 2. Tighten bolts three four five and six to 132 inch pounds. 0L blocks changed in This cylinder block does not use 6 quot long bolts as required for the early style refer to the diagram below for bolt position and torquing sequence. Remove engine coolant thermostat housing. Loosen all the rockers and remove the pushrods before removing the head bolts. 8L Engine Fig. Follow the final torque sequence. Jul 15 2016 If it is stuck tap lightly on the side of the head with a rubber hammer to loosen the cylinder head. 6. 00 905742 PD 375. Apr 15 2015 im using right cylinder head to start for top row starting in bac of head to front of engine 7 3 1 6 10 then bottom row from back to front also 9 5 2 4 8 then instal small bolts at front of engine were needed k now start sequence in order starting with 1 should b middle top row then follow numbers 1 10 in order first torque 1 10 to 15ft 29 Sep 2018 Proper Cylinder Head Bolts Loosening Sequence. 2 ft lbs 60 Nm in alphabetical Aug 22 2009 Fig. Also if the final torque of the head bolts specs out an angle of degrees instead of in FT LB s these are torque to yield type head bolts and cannot be reused but must be replaced. 100 nm D understood 4. I know old post but for everybody else that is looking for this info That photo is of the way they recommend you quot loosen quot the head bolts an inward spiral. Put 4C 5593 Thread Lubricant clean engine oil or 6V 4876 Molykote Paste Lubricant on the threads of bolts 1 . Loosen each bolt 45 degrees in the alternating pattern in the next picture. If you are using a preset type torque wrench be sure to tighten slowly and do not overtighten. Note For the correct tightening sequence see Figure quot Tightening Sequence Cylinder Head Bolts quot . Lightly lubricate new cylinder head bolt threads When loosening cylinder head bolts what pattern should you use If you are talking aluminum heads most have a removal sequence. 1 799 190 200 245 FT LBS Model A amp B Ford Garage Brumfield Cylinder Head Gasket Installation Instructions Brumfield 5. Align the quot I quot mark quot a quot on the generator rotor with the stationary pointer quot b quot on the generator cover. Nov 09 2008 Next loosen them in the same sequence by one half a turn. Dec 22 2019 In this case the cylinder head gasket can be reused. Install and tighten the bolts as follows 3114 Cylinder Head Tightening Sequence 3116 amp 3126 Cylinder Head Tightening Sequence a. For this model year it is asking you to compress the bolts again to a certain spec and then rotate the bolts in sequence again twice more rotating the head of the The G28T cylinder head is also interchangeable with that of US and British Model A amp B engines and Russian GAZ Model BB engines. This is a quick guide to help when replacing head gaskets on a Subaru. The head bolt torque specs of a 1985 3. 225 Nm 52 Figure 4. The tightening of the cylinder head bolts in the production process has also been adapted to the bolts 39 new surface treatment and takes place in steps in the same way as in the after market. Exploded view of the cylinder head mounting Non Turbo engine Fig. May 17 2008 Tighten cylinder head retaining bolts in numerical sequence in three steps as follows a. ft. Install Camshaft sprocket a. Be careful not to nbsp d. 2L engine Cylinder head bolt tightening sequence 2. Secure in place with the mounting bolts. 19. If a bolt makes any noise while you are torquing it loosen the bolt and retighten it from the first step. Turn bolt 1 through bolt 26 in a numerical sequence for an additional 90 degrees 1 4 turn . For most applications however studs are recommended. NEW Component directly from stock. 5 516 10000 120 130 FT LBS 5 8 quot BOLTS 160 170 FT LBS 3 4 quot BOLTS 210 230 FT LBS ALLIS CHALMERS 12. Dec 15 2017 Fit head gasket. Share Save. Jun 15 2017 Cylinder Head Bolt Loosening Sequence VIN S The cylinders heads of the 3. 05mm . m 7. Cylinder head bolt torque sequence. An exploded view of the 1. INFOGRAPHIC BY LORI SAMS Head Fastener Installation Tips. 8L cylinder nbsp Honda Civic Del Sol 1992 2000 HEAD BOLT LOOSENING AND TIGHTENING SEQUENCE Unfortunately I left my Haynes manual back at work and I 39 m nbsp 09 Engine 5. Install the cylinder head on the block using a new gasket. 0 Mustang Tech 2 Oct 16 2019 S Engine Cylinder Head Cracked Lifter Bore SN95 4. Step 1 18 lb. 1 Apply a coat of engine oil to the washers and bolt threads. With the EST ignition they made many small changes to get the timing and lean carb mixture to work together without destroying the engine. Posted to Technical Discussion Forum on 8 23 2013 22 Replies. Tighten bolt 27 through bolt 33 in a numerical sequence to a torque of 28 7 N m 20 5 lb ft . Head warpage or cracking could result from removing bolts in an incorrect order. Warning Most head bolts are torque to yield. Inspect and clean your existing head bolts if you re re using them. Having said that I have seen a lot of posts about tightening the bottom only. using the proper sequence loosen them re torque to 60 ft lb in sequence loosen them nbsp For each cylinder head start with head bolt numbered one. 00 SEQUENCE quot A quot STAGE 2 SEQUENCE quot B quot STAGE 3 FRONT INTAKE SIDE INTAKE SIDE STAGE FOLLOWHNG SEQUENCE quot A quot TIGHTEN BOLTS TO 110 bs. 45. As a head gasket reaches a high level of compression its stiffness becomes nearly constant. ly 2kKntcP TRISCO TIMING Use a socket and bar to loosen the nuts or bolts securing the head in the reverse of the tightening sequence for the engine see car handbook . Sep 03 2015 Mistake 11 Cylinder Head Galling. I am an old timer and had a 1969 SS 396 that subsequently Jul 30 2004 you can also distort the cylinder wall hence the use of a torque plate when honing a block to quot pre distort quot the block so when you bolt the head on its actually a more perfect circle. Inspection 1 Check cylinder head for evidence of water leakage or damage. b. 6th Tighten 3 8 inch nut and bolt 10 at rear camshaft bearing location left side to 300 in. Sep 20 2013 For each cylinder head start with head bolt numbered one. 2. Once they reach this zone they spring back to provide a precise level of clamping force over the entire area of the gasket. In the case of customer complaint see Procedure. Note The bridge is designed to crush around the rocker shaft so when torquing the bolts it may initially feel like the bolt is stripped. 8T 2. Remove. Tighten the center head bolts. Coat each bolts with clean engine Jun 10 2016 Head bolt torque sequence however generally remains constant for a given engine. REMOVE CYLINDER HEAD SUB ASSEMBLY. Using the flywheel and main pulley socket tool J 45390 install the 38 cylinder head bolts into the cylinder head using the torque sequence shown below. See Fig. a Using a 10 mm bi hexagon wrench uniformly loosen and remove the. Jun 10 2016 Head bolt torque sequence however generally remains constant for a given engine. Mar 17 2010 2012 Crewmax TRD 5. Volkswagen Golf Service amp Repair Manual 4 cylinder injection engine 1. Remove heater pipe. For Head Studs or aftermarket bolts CHECK YOUR INSTRUCTIONS SBC studs are available in a ton of different styles depending on heads and stud diameters. 7L Engine 7. 143. For 6. 0 kgf m 51 ftlb in alphabetical sequence again. The bolts green arrows are recessed in the cylinder head at the spots indicated. Tighten all bolts to 22 foot pounds. I believed that I did it correctly but then after lunch just for quot fun quot I went back over the head bolts with my beam style torque wrench to confirm that all the bolts didn 39 t turn Loosen the cylinder head and cylinder bolts a 1 4 turn at a time in a crisscross pattern. are they the same Prolly so but jus wonderin 39 HeadBolts. Install bolts in sequence starting with 1 and hand tight. Mitsubishi 4G63 4G64 engine Cylinder Head Bolt torque. Inspection Thoroughly clean all gasket mating surfaces. Replace cylinder head bolt after loosening or removing. Page 8 of 23 Starting with the front cylinder head loosen and then torque each rocker shaft bridge bolt in the sequence shown here. Loosen each bolt again another 45 degrees in the same alternating pattern. SST 09205 16010 NOTICE Cylinder head warpage or cracking could result from removing bolts in incorrect order. Use the following procedure 1. 41. Be careful not to scratch the mating surface of cylinder block and cylinder head. Tighten bolt 1 through bolt 14 in a numerical sequence to nbsp 29 Jan 2011 Lets take for instance the cylinder head bolt tightening sequence for m20 6 cylinder engine in an e30. Loosen the cylinder head bolts 90 . 29 Oct 2007 Is there a bolt tightening sequence for putting the Cyl. Loosen the cylinder head nbsp IMPORTANT You must follow the cylinder head bolts loosening sequence as described below. 15 Tighten the rocker assembly bolts using this order in several passes . 19 Remove the cylinder head and manifolds. NOTICE Do not drop the washers into the cylinder head. lbs. Cylinder head and block warpage is likely along with all plastic engine attachments. Bolts numbers 1 3 9 foot pounds. 200 N m 147 lb Dec 22 2017 Re torques whether cylinder heads or anything else are just making sure the fasteners haven 39 t loosened. See TIMING BELT under REMOVAL amp INSTALLATION. Loosen bolt 1 through bolt 14 to 0 N m 0 lb ft . Loosen the cylinder head bolts 180 degrees. Tighten all bolts to 22. the rocker arm bolts are 168 in. 8L VR6 Cylinder Head Golf amp Jetta AFP Engine Courtesy of Volkswagen United States Inc. 7 Bolt 4G63 1. 0L SOHC engine. These bolts are engineered to stretch within a controlled yield zone . Reference the supplied diagram for head bolt removal and tightening. Match mark all components for installation reference. Then re tention bolts in three stages till recommend torque is reached. Warning Cylinder head bolts have a specific sequence that is used nbsp 23 Jul 2006 if a cylinder head is warped when you remove it and you dont back of the head bolts in small increments you can crack the head. Be aware that in 1978 Honda changed the torque spec for all GL1000 cylinder heads to 5. Turn the crankshaft counterclockwise. Thanks Rick. Uniformly loosen the 8 cylinder head bolts in the sequence shown in the illustration. Loosen all bolts completely to 0 ft lbs 3. Align the quot I quot mark quot c quot on the camshaft sprocket with the Discard the bolts as new ones must be used at reassembly. b Remove the ten plate washers. 0020 in. Once the full torque has been reached 22 foot pounds Go back to 1 in the head torque sequence. Only the total force available nbsp Cylinder head bolt LOOSENING sequence 1. having to pull with some effort on the torque wrench STOP loosen the bolt and start over. 5. NOTE If reusing the head bolts make sure they do not exceed the maximum bolt length of 194 mm 7. 50 N m 37 lb ft . No way to follow a torque sequence when you can only get to half the nuts. Tighten according to the following torque values Step 1 All to 30 N m 22 ft. 1 ft lbs 30 Nm in alphabetical order. Two bolt heads are not unknown in small diesels. tighten the bolts in the sequence shown in five stages. remove the cylinder head. If it is stuck tap lightly on the side of the head with a rubber hammer to loosen the cylinder head. lbs. Step 2 Pop the hood of your car and locate the cylinder head bolts on top of the cylinder head. Results 1 15 of 661 Shop here and get the best deal on your Cylinder Head Bolt purchase. Also for example on a 235 Chevy 6 the torque spec for the head bolts is 90 95 ft lbs so what I do is I torque the head in increments starting at 30 35 ft lb. two cylinder head bolts 1 PZ or twenty six cylinder. 6L Mustang Tech 4 Jul 25 2019 B 97 4. Using TORX socket size E20 loosen cylinder head bolts. Next loosen them in the same sequence by one half a turn. 33. ft step 6 repeat step 5 step 7 120 degrees 5 degrees Minor Cylinder Head Bolts bolts 27 through bolt 34 in numerical sequence Cylinder head may be removed with engine in vehicle. 20 N m 15 lb ft . Remove cylinder head gasket. Mark each head bolt and head with aligning marks. 210 STAGE 3 FOLLOWING SEQUENCE quot B quot TIGHTEN BOLTS IN ROWS TO 185 lbs ft. In this case the cylinder head gasket can be reused. Conclusion. Parts required CYLINDER HEAD BOLT TIGHTENING SEQUENCE INTAKE SIDE 8 4 1 5 9 7 3 2 6 10 EXHAUST SIDE In sequence torque the cylinder head bolts. 46. 2L engine INSTALLATION Inspect the cylinder head for warpage. In the case of aluminum cylinder heads you must place hardened steel washers under your bolts. Exhaust Manifold 36 ft lbs. Remove the cylinder head gasket. To avoid damaging the cylinder head wait until the engine coolant temperature drops below 38 C 100 F before loosening the cylinder head bolts. Tighten bolts one and two to 25 to 36 foot pounds. To avoid damage unplug the wiring connectors carefully while holding the connector portion. Provided for Taliaferro GenuineSaab Customers External cylinder head gasket leakage M99 9 3 and 9 5 models with 4 cylinder engine To address an external oil or coolant leak from the cylinder head gasket when no engine overheating or other running complaints have occurred it is only necessary to retorque the cylinder head bolts. Tighten each bolt 1 4 turn 90 degrees . Torque the bolts to 21 lb. Repeat this sequence until all of the bolts are loosened. 2 and 3. 8 2. Feb 20 2020 Some head bolts can be reused while others can 39 t. Weathertechs front and rear. CAUTION Loosen cylinder head bolts in 2 steps using proper sequence to prevent cylinder head warpage or cracking. 6 litre valve dropped into cylinder head 1996 2004 SN95 Mustang General Talk 1 Feb 10 LS Engine Specifications. 27 Oct 2012 Cylinder Head 36 ft lbs then 1 4 turn. install the bolts. 2 Then tighten all bolts to 69 N. Position head and gasket and nip up bolts finger tight check every thing is properly Feb 19 2011 Cylinder Head Bolt Tightening Sequence If this is your first visit be sure to check out the FAQ by clicking the link above. c. If each cylinder has four head bolts around it each bolt has to exert a clamping load of 10 375 lbs. Apr 10 2014 i have a 1995 kx 125 and 2 of the 4 cylinder head bolts wont tighten. Remove cylinder head bolts in proper sequence. 19 Dec 2018 It has coverage of sequences for cylinder heads flywheels flex plates front loosening retightening and rotating the bolt additional degrees. 3 Loosen cylinder head bolts in reverse order of tightening sequence. 1 3 5 10 9 7 6 8 11 4 2 Since I can 39 t get the numbers to format properly assume that each row is centered on the page. Continue in this order until all 18 head studs have been torqued to 90 ft lb. For 8mm head studs torque the cylinder head nuts to 18 ft lbs. Polo Mk4 gt Volkswagen Workshop Manuals gt Engine gt 4 cylinder injection engine gt Engine cylinder head valve gear gt Cylinder head gt Assembly overview Sep 10 2020 Looking at the top of the cylinder head remove the ten E12 Torx cylinder head bolts in two stages. 1 engine head bolt torque is 98 through 2001 is step1 37 foot lbs step 2 rotate an additional 90 degrees 1 4 turn . Nissan VR38 Rod Bolt Kit. Then it says to loosen all of those bolts in a sequence but it is not the opposite it is slightly changed for 2002 Then you begin the process of tightening the bolts again. Sep 29 2018. Jul 18 2020 Cylinder Head Bolts and Flat Washers below for Kohler engine models K141 K160 K161 K181 and M8. The bolts can bind at the top of the head holes as these close up under bolt loads so make sure the bolts are running free in the head and in the block threads before assembly. This 65 to 71 Nm belongs to a 6 cylinder torque sequence engine. Step 2 Tighten M12 cylinder head bolts in sequence to 54 N m Tighten the cylinder head bolts in the proper tightening sequence as shown and torque them in two stages. To avoid damaging the cylinder head wait until the engine coolant temperature drops below 38 C 100 F before loosening the cylinder head bolts. If a bolt makes any noise while you are torquing it loosen the bolt And if you re lucky there ll be enough of the broken head bolt exposed above the deck of the block to get a Vice Grip pliers on to remove it. 5L Elantra and Tiburon 2. to hold the head in place. Over the weekend I was plowing some dirt with my 72 LGT 100 and noticed I was losing oil about 4 oz a day. 150 Nm STAGE 2 FOLLOWING SEQUENCE quot A quot TIGHTEN BOLTS TO 155 lbs ft. the double threaded screws also wont stay tightened down. 2 KG M 42 45 ft lb . Torque all bolt to 58 ft lbs in order 2. Using a 10 mm bi hexagon wrench uniformly tighten the 10 bolts in the sequence shown in the illustration. Loosen all bolts in reverse order. Once you loosen them from the cylinder head the bolts cannot recover their old performance even if you torque them exactly like before. Loosen the cylinder head bolts in several stages and in the opposite order of the tightening sequence. Loosen head bolts in 2 or 3 steps to prevent cylinder head warpage. Stage 2 Loosen the bolts one full turn. 0L DOHC engine have to be loosened in the recommended sequence above. 0 Mustang Tech 3 Nov 28 2019 1 Engine Help with cylinder heads Fox 5. ft 20 Nm Step 4 90 degrees Step 5 90 degrees Jan 19 2009 Position cylinder heads 4 onto head gaskets 5 and cylinder block. com cylinder head bolts and engine fasteners Cylinder head bolts Stainless engine fastener kits. Coolant drain plug cylinder 8 Nm Coolant drain plug water pump 8 Nm Cylinder head cover holts 10 Nm Cylinder head bolts 8mm 25 Nm Tighten the fasteners following the specified sequence. Use the following procedure Loosen the cylinder head bolts 90 degrees. Step 6 Tighten all bolts to 40 Nm 29. 2 Tighten the cylinder head bolts. per bolt. Loosen the 10 bolts 90 . In sequence torque all bolts. 375. . Any other sequence is improper. Torque it a second time to 90lbft. Unlimited Slip nbsp 15 Feb 2019 Tightening cylinder head bolts or more bolts can occur or vibration can cause one or more bolts to loosen themselves Like conventional bolts torque to yield bolts are also tightened in a specific sequence and prescribed nbsp cylinder head bolts be tightened in close com pliance with the specified instructions and in the specified sequence see section 4 . Replace cylinder head bolts after loosening or removing. Tighten all bolts to 51 foot pounds. Cylinder head bolt loosening sequence Sonata 2. for the proper sequence in which to tighten the bolts and do the operation in 3 stages to nbsp The correct cylinder head bolt loosening sequence must be used to prevent warpage 4. This package deal includes a professionally rebuilt L 6 226 cylinder head OEM head gasket 33 cylinder head bolts and 33 cylinder head bolt washers. Tighten bolt 1 through bolt 26 in a numerical sequence to a torque of 160 15 N m 120 11 lb ft . Next turn all the bolts again in sequence by 90 degrees. This is done to avoid any galling of the head surface as well as an evened out clamping on the softer aluminum surface. Set the wrench to the minimum torque specified within the range and torque slowly and evenly till it clicks or reaches the specified value on the scale . Loosen the cylinder head bolts in the nbsp 14 May 2016 Should cylinder head bolts be removed in sequence and incrementally Some engine manufacturers are very specific about loosening nbsp 15 Jul 2016 Loosen all of the bolts before removing any of the the bolts all the way. turbocharger Engine cylinder head valve gear Cylinder head Assembly overview cylinder head Note The camshafts must not be removed individually. These bolts achieve clamping force by stretching during the torque Jun 19 2008 Hello The cylinder tins have to come off to get at the top 4 nuts. 22. 0 kgf. Be careful not to change the installing position of the preassembled washer bolts and non preassembled washer bolts. 2 Tighten all bolts to 29 N m 3. Complete tensioning cylinder head in sequence 3rd 98 102 Nm Cylinder Head M11 Bolts Second Pass in Sequence 90 degrees Cylinder Head M11 Bolts Final Pass in Sequence 70 degrees Engine Block Coolant Drain Hole Plug 60 N m 44 lb ft Engine Block Coolant Heater 50 N m 37 lb ft Engine Block Oil Gallery Plug 60 N m 44 lb ft Evaporative Emission EVAP Canister Purge Solenoid Mar 30 2012 Head Types. heads on like on BMW 39 s Thanks. 4 valve TFSI generation III mechanics gt Engine cylinder head valve gear gt Valve gear gt Valve gear exploded view Cylinder Head Bolt Installation Factory Method For each cylinder head start with head bolt numbered one. Line X AVS vent visors. Apply new engine oil to the threads and flange the cylinder head bolts. For 10mm head studs torque the cylinder head nuts to 23 ft lbs. Step 5 Loosen all bolts by 180 in reverse order of tightening F to A then loosen further by another 180 F to A . Some engines need a special adaptor tool to fit the bolts. 0T FSI and 2. 2 Tighten each bolt to 12 14 foot pounds of torque. 8 tdi. 139. like the head bolt torque sequence and rocker bolt torque sequence 99 chevy malibu v6 3. one time only. T T Y bolts should be removed in the With such a sequence each bolt is tightened more than once so as to reduce the preload reduction caused by the tightening of the other bolts in the joint. Tighten bolts in the correct sequence in three stages 1. Loosen all bolts washers should be loose under bolts . 8L 5. Cylinder Head Height Reference 142. 09 Engine 5. Cylinder head bolt loosening sequence Non Turbo WANT TO BUY TUNING INSTRUMENTS Below are the links of tuning instrument i used on my tutorials VGATE MAXISCAN SCAN TOOL http bit. You may have to register before you can post click the register link above to proceed. 14 Tighten the head bolts using this sequence in several passes to prevent head damage . REMOVE CYLINDER HEAD a Using SST uniformly loosen and remove the ten cylinder head bolts in several passes in the sequence shown. Can anyone tell me the torque specs and the sequence for the cylinder head I have been searching for a how to for hours I 39 m helping a single mom fix her car and any help would be greatly appreciated you don 39 t have to get greasy lol just need some info thank you Steve NEW KIT Chevrolet LSA 8740 hex Head Bolt Kit NEW KIT Chevrolet Big Block Mark IV block with Edelbrock heads 60409 60429 60479 60499 60559 12pt Fastener Tech Cylinder Head M11 Bolts First Pass in Sequence 30 N m 22 lb ft Cylinder Head M11 Bolts Second Pass in Sequence 90 degrees Cylinder Head M11 Bolts Final Pass in Sequence 70 degrees Cylinder Head M8 Bolts in Sequence 30 N m 22 lb ft Cylinder Head Coolant Plug 20 N m 15 lb ft Mitsubishi 4G63 4G64 engine Main Bearing Bolt torque. Again tighten them in sequence to 30 to 44 foot pounds. Tighten the cylinder head bolts in the sequence shown following this 4 step torque plus angle method. Tests have shown that the elastic interaction between bolts in a joint can have a significant effect on the preload a reduction of 35 . Remove the 8 cylinder head bolts and plate washers. 0L engines Fig. Tighten the cylinder head bolts in sequence to 39 N. 0 kgf m 22 lbf ft with a beam type torque wrench if possible. e. Tighten bolts 1 26 again in sequence to 120 ft. We have cylinder head fasteners studs as well as all types of engine fasteners for gas and diesel engines . See Figure quot Cylinder Head Bolt Tightening Sequence quot . 25 ft. 2 Remove oil level gauge guide. 0L SOHC engine Dec 18 2010 Note To ensure proper cylinder head alignment during installation place two 200 mm long by 12 mm diesel engine wooden dowels into two of the outermost head bolt holes to hold the gasket and serve as guides as the cylinder head is installed. 18. Symptom description Visible external coolant oil leakage from the cylinder head. Loosen bolt 1 through bolt 14 until the washers are loose under the bolt heads. Tighten the cylinder head bolts in sequence an additional 95 degrees. Jul 15 2016 Step 5 Remove the cylinder head. Loosening Sequence as seen from front of car. 8 Nm. The specs for all other 3126B C7 engines below Use the following procedure to tighten the cylinder head bolts 1. Using a socket hexagon wrench 8 remove the hexagon bolt. Oct 25 2007 If a bolt makes any noise while you are torquing it loosen the bolt and retighten it. Why is this important Sep 11 2017 I 39 ve been unable to find the head bolt torque for a briggs 441777 0284 E1 engine the 0283 E1 is 160 in lbs. Move the cylinder head assembly slightly in direction of the transmission. Then turn them all yet again in sequence a final 90 degrees. Do not loosen the bolts of any cylinder head on any engine in a nbsp Uniformly loosen and remove the twelve bearing cap bolts in several passes in the sequence shown. Tighten all bolts to 7. Tighten the three head bolt studs to a torque of 100 20 N m 75 Jan 29 2015 Cylinder head Tighten the nuts and bolts in the sequence below in 2 3 steps. Jul 11 2009 the cylinder head bolts are a torque to yield design and must not be reused always install new bolts. Feb 16 2017 Second Pass Loosen 360degrees Third Pass 80Y 59lbft Sequence 60degrees Cylinder Head Bolt Cylinder Head Bolts Internal Hex LH New cylinder head bolt washers Step 1 Check your working location. Before we show the sequence of tightening the head to engine sequence lets back up and show how to remove the head then adding the gasket and applying the sequence. If a bolt does not move at all when trying to retighten as I go through the sequence I back it off a fraction less than 10 degrees and then tighten again. A5 gt Audi Workshop Manuals gt Power unit gt 4 cylinder direct injection engine 1. I just did this job and followed the steps in this document for the head bolt tighening torque procedure. You may need a helper to lift the head. Remove cylinder head sub assembly. If there are five head bolts per cylinder the load needs to be 8 300 lbs. Install the pushrods and rocker arms. Loosen retaining bolts one at a time two to three Torque the cylinder head bolts in sequence to 29 N m 3. Finish torquing the initial tightening sequence to 7 ft lbs. Head bolt washers are required to prevent galling of the aluminum and to get accurate torque readings. Loosen nineteen bolts 2 a file at a time in the sequence shown in FIGURE 3 61. So Typical bolts can be an issue when you use them on aluminum heads and with a gasket that doesn t relax like an MLS gasket. To give you a quick reference of torque sequences OnAllCylinders Lori Sams has created a series of infographics for different engine makes. i. Torque 50 Nm 37 ft lbs In sequence turn each bolt an additional 90 degrees. They tighten for a few minutes while running but eventually gets loose. Remove the 12 cylinder head bolts. Once all the bolts are removed the cylinder head may be removed from the engine. 2 Tighten all bolts to 29 N m 3. This breaks the friction that may be sticking the bolt and confirms you have got it to the correct torque as it moves when you retighten. 40 N m 29 lb ft . This allows for proper tightness so bolts won 39 t loosen later. is 50 to 55 ft lbs. 0LX cylinder head bolt torque Merc and Volvo have had problems keeping head gaskets in those engines. Then mark the bolt head and 3 spots on the cylinder head so that their is a mark 90 apart all around. Position each cylinder head evenly on the block s dowel pins so that each head lies flat against the gasket. 0 kgf m 22 ft lbs in alphabetical sequence. Nut numbers 4 11 17 foot pounds. STEP 3 Lubricate the threads of the head mounting bolts with clean engine oil. 3. In increasing number sequence 1 2 3 4 tighten the head bolt in three stages. 141. Should i use this and if so what do you recomme Crossbar Bolt 100 N m 74 lb ft Cylinder Head Bolts First Pass all M11 Bolts in Sequence 30 N m 22 lb ft Cylinder Head Bolts Second Pass all M11 Bolts in Sequence 90 degrees Cylinder Head Bolts Final Pass all M11 Bolts in Sequence Excluding the Medium Length Bolts at the Front and Rear of Each Cylinder Head 90 degrees Cylinder Head Bolts 8 mm Bolts 24 32 12 mm Bolts Step 1 26 35 Step 2 Additional 90 Degrees Step 3 Additional 90 Degrees EGR Valve Tube Fittings 25 34 Engine Front Cover Bolts 14 19 Engine Lifting Eye Bolts 21 28 Engine Mount Bracket Nuts Lower 59 80 Engine Mount Bracket Nuts Upper 81 110 Exhaust Manifold Nut 16 22 1 Drain the coolant below the head level and remove and replace the head bolts as specified 2 Do not remove the bolts and just do a quarter turn or 1 8th on all with the sequence I do not own a 4 cylinder but I personally would never attempt to re torque the head gasket. Before removing T T Y head bolts allow the engine to fully cool. Tighten large bolts 1 in the number sequence s hown to a NOTE For 5. I then like to come back in a day or two and tighten those bolts in sequence again with the same torque setting that you last used. CAUTION Do not loosen all of the bolts at the same time only work on one bolt at a time or damage to engine or leakage may occur. Check cylinder head for warpage. Note Verify that all hose and line connections to engine transmission and body have been disconnected. Using several steps uniformly loosen and remove the 10 cylinder head bolts and 10 plate washers with a 10 mm bi hexagon wrench in the sequence shown in the illustration. Torque 79 N m 806 kgf cm 58 ft lbf Mark the front side of the cylinder head bolt with paint. NOTE It is a lot of work to torque loosen torque loosen torque and torque again but it is WELL worth it. Install the head and thread in several bolts then remove the dowels and install the remaining bolts. 5 Identifying 2. Check the cylinder head gasket surface for warp using a straightedge and thickness gauge. lb. Nov 18 2008 even after finishing the head torque sequence I like to leave the valve cover on the engine but not fastened. Many diesel engines use this arrangement which commonly has three or more long screws. Hot Plug Depression. has a bad valve I need to know the head bolt removal sequence so I don 39 t damage anything. 0L and 2. in alphabetical order. ft 25 Nm Step 2 90 degrees . 4. a diagram of bolt head viewed from above with arrow I am wondering if someone can shed some light on torquing down cylinder head on a Colt 2. 153 2 nbsp 17 Aug 2019 As you know there is usually a special pattern sequence and torque specs for installing head bolts the same apply for removing the cylinder nbsp ARMY TM 9 2815 254 24 AIR FORCE TO 38G1 94 2 Failure to loosen cylinder head bolts 2 a little at a time and in the proper sequence will adversely affect nbsp Remove the cylinder head cover and cover gasket. Jul 31 2004 6 DSMeclipse4G63 Proven Member The engine running or pressure test should not be performed within 30 minutes after installing cylinder head bolts. Repeat for all bolts in sequence pictured below. Install the ten cylinder head bolts finger tight. Aug 01 2019 Torque the six 10mm head bolts first then torque the small 6mm bolt last. Pictured below is a somewhat different cylinder head nut tightening sequence which is commonly recommended by Larry Brumfield and by various modern Model A publications. Loosen it. Install the bolts and plate washers to the cylinder head. Its better to take your time and tighten in several steps. d. Mitsubishi 4G63 4G64 engine Main Bearing Bolt torque. I need the engine torque specs for 99 chevy malibu. Install the cylinder head. 1. Remove the cylinder head and place on a suitable base. These head bolts are single use only and once Access our free Cylinder Head Repair Guide for Subaru Forester 1998 05 through AutoZone Rewards. Originally Posted by norvelplagbao52 1993 saturn sl2 1. ex On a straight six engine it would be the Right side bolt between number 3 and 4 cylinders then the Left side bolt then the Left side bolt between number 4 and 5 cylinders then the Right side bolt then the Right side bolt between number 2 and 3 Jul 07 2016 Today we ll look at cylinder head torque sequences for Ford V8 V10 and V12 engines if you re a Chevy person click here . Head bolt torque specs middot wheel hub bearing bolt torque specs middot Cylinder head nbsp Removing the cylinder head is straightforward on pushrod engines but more to loosen the rocker shaft support pedestal nuts or bolts gradually in sequence nbsp CYLINDER HEAD. CONTINENTAL. Don 39 t loosen each bolt all at once as you 39 re loosening them or you 39 ll warp the cylinder head . Rotate each bolt in sequence an additional 90 degrees. To prevent head from falling leave bolts No. This should close the gap. Tighten bolt 1 through bolt 14 in a numerical sequence to a torque of 300 15 N m 221 11 lb ft b. If it 39 s warped it 11D 43 ENGINE OVERHAUL lt 4G63 Turbo gt CYLINDER HEAD AND VALVES CAUTION The thickness of the metal that can be removed by grinding from both the cylinder head and the mating cylinder block is limited to 0. Once they are in place place a small amount of ARP moly lube on the Always use new cylinder head bolts. Loosen bolt 1 through bolt 26 until the washers are loose under the bolt heads. 5L Cylinder The cylinder had bolt tightening sequence should begin by tightening the head bolts on each end of the head. The sequence is nbsp . This allows the bolt tension to become more uniform as a clamping force. Four cylinder front wheel drive automatic. Cylinder head bolt loosening sequence. 4 Back off all bolts by 180 first back them off Mar 10 2007 The usual pattern is from the middle bolts to the outer bolts going in a circular pattern. m 29 lbf. 2 Cylinder Head Bolts Special Torque Sequence 7. This is the Head Bolt Torque Sequence Pattern for the Mark IV Big Blocks Rat Motors or what ever you might lovingly call the motor. Cylinder head torque sequence 99 00 Cylinder head torque sequence 01 05 Install the new cylinder head bolts. 5th Tighten crankcase fastenings 5 thru 9 in sequence shown. Install the head gasket in the proper orientation as marked on the gasket. 5 ft. 4 L Not having much luck online. Perform steps 1 3 for bolt 2 on the diagram. Tighten the cylinder head bolts a first pass to 44 ft lb 60 Nm . 8. Feb 04 2015 It 39 s the 90 degree turns that 39 ll make you sweat. The torque specifications for the heads along with the sequence is a bit involved. To install Install in reverse order noting these points Fig. Cylinder Head Removal NOTE Use fender covers to avoid damaging painted surfaces. 50 RUN ENG FOR TORQUE SEQUENCE. ft step 2 repeat step 1 step 3 120 degrees step 4 loosen all step 5 170 10 Nm 125 7 lb. 0T FSI. Install cylinder head gasket Remove the ten cylinder head bolts in sequence as shown. and M8 bolts to 20 N m 15 ft. ft step 6 repeat step 5 step 7 120 degrees 5 degrees Minor Cylinder Head Bolts bolts 27 through bolt 34 in numerical sequence Jun 04 2013 Starting with the front cylinder head loosen and then torque each rocker shaft bridge bolt in the sequence shown here. If you loosen the bolts and the engine head does not come off easy then try to use the compression to pop it off. There are a couple that have special sequences due to differing bolt length and size and or things that go under the head bolt before torquing other than the cylinder head itself rocker arm pedestals rocker arm carriers but for anyting not of the unordinary that is the sequence. In many postings on internet message boards Larry Brumfield has shared a lot of his knowledge about engine operation combustion intake and exhaust theory and cylinder head design construction and manufacture. Feb 19 2011 Cylinder Head Bolt Tightening Sequence If this is your first visit be sure to check out the FAQ by clicking the link above. Tighten bolts 1 26 in proper sequence to 120 ft. Fasteners for domestic and import engines OEM style cylinder head bolts and performance type ARP brand bolts Nov 20 2010 Almost all cylinder heads are torqued in this fashion. the chance of coolant leaking into the cylinders and crankcase while they are all nbsp Loosen head bolts 1 4 turn in reverse order of tightening sequence. arp bolts. 0 kgf m 22 ftlb in alphabetical sequence. Oct 22 2013 Page 1 of 3 Causes Of Loose Cylinder Head Bolts posted in Ford Jacobsen Moline Oliver Town amp Country White Hello all I need some help from people more knowledgeable than myself about small engines. 7L street head we recommend Mahle 54774 or Cummins 4932210 STEP 2 Place the cylinder head on the block properly seat it into the dowels. 8 Ford Ltd. Stage 4 Tighten the bolts 90 degrees Jun 05 2017 Engine Did I install my cylinder heads wrong Fox 5. Used rods Torque to 285 in. 47. as both sides of the washer and torque to 60 ft lb loosen tighten to 60 ft lb loosen torque to 90 ft lb and stop. Torque to 37 ft lbs. Make Liter CID Engine Model Year Rod Torque Main Torque Cylinder Head Bolt Torque ALLIS CHALMERS 8. Loosen one bolt. Using the head bolt impact socket J 45389 install the cylinder head bolts. Cylinder Head Inspection. Tighten each bolt nbsp 9 Nov 2008 Friction between the bolt head its washer and the cylinder head isn 39 t consistent. Loosen all bolts 180 in the reverse order of installing and loosen them an additional 180 . Chain guide bolt upper 25 Nm Chain guide bolt lower 27 Nm 2. Tighten to 22 lbf ft in sequence. Fel Pro head bolt sets are application specific. Cylinder Head Bolt Torque. Loosen it and then tighten it for the third time to 130lbft. 4 Cylinder head torque sequence Use a new head gasket. NOTICE Be careful not to drop the washers into the cylinder head. Some People do only 1 or 2 steps to reach the final torque. Doing this sequence of torqueing and loosening helps to seat the threads of the studs to both the nut as well as to the cylinder Sep 06 2020 When tightening the cylinder head bolts the threads strip out of the block and the bolt cannot be tightened to the correct torque specification. Work towards each end of the head alternating back and CAT C13 Main Cylinder Head Bolts bolts 1 through bolt 26 in numerical sequence step 1 170 Nm 125 lb. Remove the air pump bracket and engine hanger. Has anyone ever seen a cylinder head torque sequence like this Why loosen amp re torque It 39 s a multi layer steel gasket on a 3. 0 ltr. Remove the intake manifold bolts 1 intake manifold 2 . If Remove the cylinder head bolts. Stage 1 Tighten the bolts to 37 lb ft . Hot Plug Removal. A friend recommended to try bolt thread sealant. Cylinder Head Bolt Loosening Sequence. 7 175 views7. 3L and 6. Tighten all bolts in sequence to 15 ft lbs Tighten all bolts in sequence an additional 90 degrees Always keep a colorful markers ready to mark the heads of the bolt so you can see your rotation in case you lose track Tighten all bolts in sequence a second This allows for proper tightness so bolts won 39 t loosen later. 0 731 190 200 FT LBS 7 8 BOLTS 400 FT LBS 5 8 BOLTS 200 FT LBS 12 PT HEADS 185 FT LBS ALLIS CHALMERS 13. Hyundai then recommends loosening. Removing the bolts while the engine is hot can cause cylinder head warpage. Loosen tighten to full torque. com. Loosen all bolts. Nov 30 2012 Loosen bolt 1 through bolt 26 until the washers are loose under the bolt heads. Torque bridge bolts 9 and 10 to 18 ft lb. 5 lb. I also need the torque specs on the bolts Thanks. 7L Cylinder Head ROCKER ARM Valve Removal. 0L SOHC engine 7924EG04 Cylinder head bolt torque sequence 4. If that was a tried and proven method everyone would use it. ft . These diagrams include Fig. Remove head bolts. Loosen tighten to full torque 6 times to all the cylinder head nuts are 22 foot pounds. 7. 140. IMPORTANT Loosen each cylinder head bolt 1 4 of a turn in other words 90 of a turn . Install the large cylinder head bolts and thread them in by hand. For engines built after September 2002 a new style cylinder head bolt will be used for all Series 60 On Highway engines. Tighten the cylinder head bolts in three steps using the sequence provided Step 1 Snug tighten M12 cylinder head bolts in sequence to 34 N m 25 ft. 7 . and tighten each bolt using the same sequence. To prevent warpage unscrew the bolts in sequence 1 3 turn at a time repeat the sequence nbsp 25 Nov 2017 Can anyone tell me the head bolt tightening sequence for a 2013 Cruze LTZ 1. 0L 8v engine bolts tightening and loosening several times. ft 20 Nm Step 4 90 degrees Step 5 90 degrees CAT C13 Main Cylinder Head Bolts bolts 1 through bolt 26 in numerical sequence step 1 170 Nm 125 lb. One last note I 39 d have someone who knows Escort cylinder heads take a look at yours. 3 Tighten all bolts to 69 N The correct cylinder head bolt loosening sequence must be used to prevent warpage 4. 6L Pentastar engine in a 2011 Journey. 4 1 direct inction. INSTALLATION METHOD FOR HEAD STUD KITS If the cylinder head studs protrude into a water jacket lubricate the nbsp 19 Dec 2014 Except after loosening each bolt I will remove it and then replace with a new one. Use a beam type torque wrench. Remove cylinder head bolts in reverse sequence of installation. Use new fasteners on a high mileage or high performance engine. Using a lifting device remove cylinder head with intake and exhaust manifolds attached. cylinder. The table below lists a typical range for the quot K Factor quot as well as the values used in calculating the RepairEngineering Bolt Torque Chart. torque. Replacing the old tried and true small block Chevy engine with a new version would not be an easy task. Re Mericruiser 3. Remove cylinder head bolts in reverse order of installation. 10 cylinder head bolts and 10 plate washers in several steps in the sequence shown in the illustration. caps Oil pump NOTE Before installing the cylinder head bolts lubricate the threads with clean engine oil. Tighten the head nuts in the Honda manual sequence in 5 lb increments. 0. 18 Cylinder head bolt removal sequence. Jul 14 2011 npk retightening head bolts on an engine with an old compressed head gasket using the 55nm 90 90 method is likely to cause problems such as stripping the threads in the head. Ionic Gladiator running boards. Align cylinder head with dowels on the block and sit the head on the block. Loosen them again another 160 . Upon installing the back head the worst one to access I torqued all 8 bolts to the updated 44 lb ft and the 95 degree torque angle with the new torque sequence. Intake Manifold 14 ft lbs. 5L engine Fig. Lift off the cylinder head. Use caution when handling the cylinder head. Install cylinder head bolts and tension in sequence 1st 40 49 Nm 2nd Loosen cylinder head bolts completely Install 2 timing gear case bolts and tension to 9. To prevent warpage loosen them in sequence 1 3 turn at a time. 9 dohc cylinder head ARMY TM 9 2815 254 24 AIR FORCE TO 38G1 94 2 Failure to loosen cylinder head bolts 2 a little at a time and in the proper sequence will adversely affect cylinder head 3 lower surface. 1 Cylinder head bolt removal sequence. CNC machining and superior tooling has nbsp Follow sequence for loosening cylinder head bolts. If you think about it tightening the bottom 4 without the top 4 is only a quot possible quot patch. 0L Cylinder head bolt torque sequence 4. Tighten all Oct 05 2012 Tighten bolts in sequence to 58 ft lbs Loosen all bolts in sequence and not randomly. Repeat Steps 1 3. They prevent the gasket from failing catastrophically. Four Cylinder Engines Wide Cylinder Flange As a result the bolts around the combustion chamber have to exert a combined force of about 41 500 lbs. Repeat steps Lower the cylinder head onto the block. Warning Most head bolts are torque to yield. When using a preset type torque wrench be sure to tighten slowly and do not overtighten. Step 7 Retighten all bolts to 69 Nm 50. 7 4x4 15 tint all around plus sunstrip. 4 ft lbs 10 Nm in alphabetical order. 28 Nm nbsp The depths of the primary head bolt holes in Chevrolet 4. 0 kgf m 51 ft lbs in alphabetical sequence. Torque all studs to 125 ft lb in the proper sequence that is shown in the diagram. Retighten the May 15 2016 I 39 ve always reused the same bolts on the old Chevy motors but on new motors the head bolts should be replaced because they can break if retorqued. 11. When using a preset click type torque wrench be sure to tighten slowly and do not overtighten. I usually lose that much between oil changes not between uses but the tractor Aug 22 2009 Fig. This is true for all makes and models. Cylinder head bolt loosening sequence 1. The sad part is that temperature is never where it should be. Torque to 15 ft lbs 2 Torque to 30 ft lbs 3. 1 Cylinder head bolt torque sequence. Many modern engines use Torque To Yield TTY bolts which can 39 t be reused. The success of a cylinder head bolt goes beyond the bolt itself and is dependent on the head gasket properties and the sequence in which it is tightened. Loosen retaining bolts one at a time two to three Apr 02 2008 I 39 m finally going to pull the passenger side cylinder head from the ea82 in my 90 loyale. Take the head bolts out in the opposite of the torqueing pattern Make sure nothing gets in the cylinders or oil passages and clean out the boltholes when nbsp Remove cylinder head loosening bolts in the order as shown using power tool. 9 ft. ft 80 Nm Step 2 Loosen bolts completely Step 3 14. ACURA 30 50 LOOSEN 1 BLT TIME amp RE TORQUE. Clean the bolt holes free from oil. Cylinder head torque sequence 2. 8 6. You can see by the sequence of the nbsp 21 Jan 2012 3. Avoid reusing old cylinder head bolts. Refitting 20 Before installing the cylinder head make sure that the mating surfaces of head and block are perfectly clean with the head locating dowels in position. Torque 30 Nm 22 ft lbs . Cylinder head bolt loosening sequence DOHC engines Fig. Tighten bolt 1 through bolt 14 in a numerical sequence to 130 15 N m 95 11 Cylinder head bolt loosening sequence 2. 4L engines Access our Hyundai Cars 1999 05 Cylinder Head Repair Guide Removal and Installation by creating an account or signing into your AutoZone Rewards account. Notice Head warpage or cracking could result from removing the bolts in the wrong order. m 4. Properly installed and torqued cylinder head bolts ensure the head gasket loads and seals correctly. 4th Tighten 3 8 nuts at front main bearing left side to 300 in. Cylinder bolts 6 mm 12 Nm Tighten the fasteners following the specified sequence. Note bolt length and location. If you over torque a nut loosen them all and start the 2 Tighten the cylinder head bolts. If necessary to transfer to new cylinder head or remove for reconditioning nbsp Eclipse Frequently Asked Question Section Head Bolt Torque Specs Here are Tighten all bolts in the sequence from 1 10 an additional 1 4 turn. Once you loosen them from the cylinder head the bolts cannot recover their old performance nbsp 5 Jan 2016 To combat head gasket scuffing and maintain cylinder head bolt torque order to the normal torquing sequence to prevent the cylinder head from becoming distorted as it is removed. 3 Tighten all bolts to 69 N m 7. Tighten each bolt to 7 9 foot pounds of torque. No issues. 7 Mar 2011 www. USED Component that was in a running engine. Loosen the cylinder head bolts 180 . These head bolts are single use only and once removed must be replaced. 40. Also used it for a cam adjuster for the 2. Lubricate the cylinder head bolts with engine oil. 2 Remove timing belt. Page 44 Valve Guide Sep 19 2013 Place an index mark on each bolt head. Loosen the bolts using the wrench and the right size of socket. At headbolts. For tightening you start in the center and spiral outwards. It is very important to follow the proper torquing sequence and specifications when installing T T Y head bolts. Replace bolts with eroded rusted heads to prevent socket from slipping so bolt will torque down correctly. Tighten bolt 1 through bolt 14 in a numerical sequence to 300 15 N m 220 11 lb ft . Remove cylinder head sub assy. Remove cylinder head loosening bolts in reverse order as shown in the figure. Next place hardened head bolt washers over each bolt hole. 1st stage 15Nm 2nd stage 25Nm 3rd stage 90 degrees Let bolts rest minimum 10 minutes after first 90 4th stage 90 degrees Make sure you chase the block threads so the head bolts will Jul 17 2017 2 Small bolts M10 Instructions for installing bolts 1 and 2 Put engine oil on the threads of the bolts and tighten them as follows a. 9 Cylinder Head and Fel Pro 7013 Gasket. The new small block is known as the LS engine family and has more than successfully replaced 350 39 s and 305 39 s that were based in design from the 1950 39 s. Tighten all bolts to 44. Jul 09 2019 Torque To Yield Bolts Important Tip Before removing torque to yield bolts allow the engine to fully cool. Using a 10 mm bi hexagon wrench uniformly loosen and remove the 10 cylinder head bolts in several passes in the sequence shown and remove the 10 cylinder head bolts and 10 plate washers. On many street driven vehicles where the master cylinders for example might protrude into the engine compartment it s probably necessary to use head bolts so that the cylinder heads can be removed with the engine in the car. Uniformly nbsp 26 Jan 2018 With regard to casting and machining cylinder heads our 21st Century world is a much better place. 1 Tighten all bolts to 29 N m 3. Once the engine has been overheated to the point of the head bolt threads stripping it is likely beyond repair. c Lift the cylinder head from the dowels on the cylinder block Lubricate all bolt threads underside of head bolt and washer with 6V 4876 molycoat paste or aftermarket equivalent. I would talk to an indie a tech at your local MB dealer or possibly an engine rebuilder before proceeding with any head bolt retightening. 5 16 quot diameter x 1 1 2 quot thread length grade 8 bolts and hardened washers. Note 4 To prevent rod bolts from loosening install a split lock washer on each bolt and then torque them to specs. According to the tightening sequence as shown below Step 1 58 lb. 1K views. Used it on Volkswagen and Audi Cylinder Head such as the 1. See Figs. Any other advice from those in the know would be greatly appreciated. Fig. 2 mm in 90 total. Make sure it 39 s clean and the surface is level. Livernois Motorsports thoroughly cleaned your cylinder heads prior to shipment however we suggest that you inspect them for loose packaging material and use compressed air to blow them out prior to installation. Then loosen each bolt in nbsp External cylinder head gasket leakage M99 9 3 and 9 5 models with 4 cylinder engine complaints have occurred it is only necessary to retorque the cylinder head bolts. Head Bolts T T Y head bolts are particularly common on engines using aluminum heads and or multi layer steel head gaskets. Listed in Table quot Tightening Stages Cylinder Head Bolts quot are the specific stages in the tightening sequence. 5 and 8 engaged by 3 4 threads. Jan 28 2015 Loosen the cylinder head bolts in reverse order of the torquing sequence and remove. Today we ll look at cylinder head torque sequences for General Motors L8 and V8 engines. Cylinder head bolt TIGHTENING sequence 1. Carefully lift off the head complete with manifolds if possible. Engage the emergency brake of your car before you start. Works every time. ft. Then Loosen in the loosening sequence. 638 inches . When removing the cylinder heads from their packaging be sure to remove all shipping and packaging material. Loosen the 12 cylinder head bolts in the sequence as shown. Stage 3 Tighten to 22 lb ft. I make 3 passes in the recommended sequence to arrive at the final recommended torque value 50 75 and 100 passes . Torque bridge bolts 1 through 8 to 19 ft lb. Cylinder head bolts are toque to yield bolts designed to be permanently elongated beyond the state of elasticity when torqued so if the bolts are removed and reused it may cause the bolts to break or fail to maintain clamping force. Warpage should not exceed 0. Crossbar Bolt 100 N m 74 lb ft Cylinder Head Bolts First Pass all M11 Bolts in Sequence 30 N m 22 lb ft Cylinder Head Bolts Second Pass all M11 Bolts in Sequence 90 degrees Cylinder Head Bolts Final Pass all M11 Bolts in Sequence Excluding the Medium Length Bolts at the Front and Rear of Each Cylinder Head 90 degrees For engines built before September 2002 torque the head bolts to 250 285 N m 184 210 lb ft in the following sequence. 9L street head we recommend Mahle 54556A or Cummins 3958645. Also check the bolts will not be bottoming out in the block once tightened 1. . Install the head bolt spacers on the three head bolt studs. Loosen the 10 bolts 180 . Torque bolts 1 through 38 in three steps as follows a. h. cylinder head bolt loosening sequence