Head bolt torque sequence

L-Head AluminumCast Sleeve Single Cylinder. Cylinder Head Bolts M8 Inner Bolts in Sequence 22 lb ft.

Crankshaft Bearing Cap Bolts Outer Bolts Final Pass in Sequence 51 degrees Crankshaft Bearing Cap Side Bolts 25 Nm 18 lb ft Crankshaft Oil Deflector Nuts 25 Nm 18 lb ft Crankshaft Position Sensor Bolt 25 Nm 18 lb ft Crossbar Bolt 100 Nm 74 lb ft Cylinder Head Bolts First Pass all M11 Bolts in Sequence 30 Nm 22 lb ft.

Head bolt torque sequence. Head bolts are being torqued to the specified value the technician can use the TRQ-1 tool to accurately measure the degrees of additional rotation required. This eliminates guesswork and assures more consistent results. Torque-To-Angle Indicator Part Number TRQ-1 Head Bolts Previously installed Torque-to-Yield head bolts should never be reused.

Head bolt torque sequence however generally remains constant for a given engine. To give you a quick reference of torque sequences OnAllCylinders Lori Sams has created a series of infographics for different engine makes. Today well look at cylinder head torque sequences for General Motors L8 and V8 engines.

The first step for M12 head bolts is to 25 lb-ft with the second step being to 40. After that turn the bolt another 90 degrees 14 turn. With M8 head bolts the first to steps are 15 and 25 respectively with the final step also being a full 90 degrees.

Mopar Engine Rod Bolts. When rebuilding the 316 engine rod bolt-rod bearing cap torque should be set to between 45 and 50 lb-ft This differs from 360 rod bolts that max out at 45. Place cylinder head gasket over alignment dowels on cylinder block.

Install cylinder head assembly. Torque head bolts in sequence shown to 220 in. Here is the diagram to show the pattern.

The head bolt tightening sequence is. LT-Series Engine All 1995 and earlier LT-series engines use the same head bolt torque 65 ft-lb and tightening sequence as the original small block. Bolts 210-230 ftlbs 12 100 58 180 ftlbs Make Liter CID Engine Model Year Rod Torque Main Torque Cylinder Head Bolt Torque ALLIS CHALMERS 85 516 10000 120-130 FTLBS.

The factory correct sequence is to remove the bolt and the tenth nut by the heater takeoff before unbolting the normal nine in the correct centre-outwards circle. Refitting requires the normal nine to be progressively tightened in the correct sequence and torqued to 42lbft before fitting and torquing the tenth nut and finally the bolt. L-Head AluminumCast Sleeve Single Cylinder.

L-Head AluminumCast Sleeve Single Cylinder. L-Head AluminumCast Sleeve Single Cylinder. L-Head Cast Iron Single Cylinder.

L-Head Cast Iron Single Cylinder. L-Head Cast Iron Single Cylinder. Tighten the M11 cylinder head bolts 1-10 a second pass in sequence to 90 degrees using J 45059.

Tighten the M11 cylinder head bolts 1-10 a final pass to 70 degrees using J 45059. Tighten the M8 cylinder head bolts 11-15 to 30 Nm 22 lb ft. Stock-style cylinder head bolts are Torque to Yield Fasteners.

NEVER reuse old TTY bolts. 2003 and earlier blocks use 1555mm long bolts in holes 1-8 and 101mm long bolts in holes 9-10. The final torque angle is different.

Make sure you use the right specs. For engines that use M12 head bolts like the LSA and LS9 refer to your GM service manual. Tighten the M11 cylinder head bolts a first pass in sequence to 30 Nm 22 lb ft.

Tighten the M11 cylinder head bolts a second pass in sequence to 90 degrees. Tighten the M11 cylinder head bolts 1-8 to 90 degrees and the M11 cylinder head bolts 9 and 10 to 50 degrees a final pass in sequence. BOLD THE TWO MEDIUM LENGTH BOLTS IN EACH UPPER CORNER 104.

Tighten the M8 cylinder head bolts 11-15 to 30 Nm 22 lb ft. Joe Cabral showing the proper torque sequence and proper torque of GM LS head bolts. Cylinder head bolt removal sequence-16L engine Fig.

Cylinder head bolt torque sequence-16L engine Access our Aveo 2004-2005 Cylinder Head Repair Guide Removal and Installation by creating an account or signing into your AutoZone Rewards account. Crankshaft Bearing Cap Bolts Outer Bolts Final Pass in Sequence 51 degrees Crankshaft Bearing Cap Side Bolts 25 Nm 18 lb ft Crankshaft Oil Deflector Nuts 25 Nm 18 lb ft Crankshaft Position Sensor Bolt 25 Nm 18 lb ft Crossbar Bolt 100 Nm 74 lb ft Cylinder Head Bolts First Pass all M11 Bolts in Sequence 30 Nm 22 lb ft. 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 Final Pass M11 Medium Length Bolts at the Front and Rear of Each Cylinder Head in Sequence 50 degrees. Cylinder Head Bolts M8 Inner Bolts in Sequence 22 lb ft. Engine Flywheel Bolts.

Engine Flywheel-to-Torque Converter Bolts. The tightening sequence on a cylinder head is a critical part of ensuring your cylinder head is tightened in a way that evenly distributes the tension and pressure across the cylinder head correctly. Many cylinder heads require multiple torque sequences to achieve proper tension.

Ford Power Stroke 73L Head Bolt Torque Sequence. Well getting ready to start working on the 2003 Excursions replacement engine. Most all the parts need assembly.

Including the cylinder heads. Its very important to have good sealing with head gaskets on Diesels due to the extreme. Head Torque Sequence.

Intake Torque Sequence. Refer to the Sidebar Bolt Torquing Techniques on page 120 for more information before applying the torque specifications listed on this page or elsewhere in this book. Tables Provided Courtesy of Automotive Racing Products ARP.

Piston Ring Gap Alignment.