How much torque does a head bolt need?

If an engine produces 1,500 pounds of pressure and the cylinder head has 8 bolts, then each bolt must be tightened to 187 foot-pounds of torque to secure the cylinder head to the block.

What are the torque settings for cylinder head?

With the engine cold, tighten the cylinder head bolts, in sequence in 2–3 steps. Final torque on bolts 1–10 should be 65–72 ft. lbs. (88–98 Nm) and on bolts 11 and 12, 11–16 ft.

What happens if you over torque a head bolt?

Some of the fasteners will stretch and you will have uneven torque. Add heat and pressure and head gasket blows and the head can even warp.

Why are ARP head studs?

Studs are typically considered better because they’re less likely to twist while being torqued. This lack of twist, compared to bolts, yields a more consistent torque loading. Bolts are less expensive and easier to use in installations where there are clearance issues that would preclude studs.

What happens if you over torque head studs?

When you overtorque above 15% of recommended which in this case would be about 95 ft/lbs you basically turn the fastener into a rubber band. Some of the fasteners will stretch and you will have uneven torque. Add heat and pressure and head gasket blows and the head can even warp.

What are the specifications of a 2004 Acura TL?

*Use for comparison purposes only. Your mileage may vary. *Ordinary maintenance items or adjustments, parts subject to normal wear and replacement, and certain other items are excluded. ***Does not apply to fluid and filter changes or periodic inspections.

Where can I find the latest torque specs?

Find the most up-to-date torque spec listings in electronic format. FelPro-Only.com is your convenient source for advanced sealing information. It’s the place to learn and share “tricks of the trade,” find proper diagnosis and installation instructions, and enjoy easy access to parts reference.

What kind of maintenance does an Acura TL need?

*Ordinary maintenance items or adjustments, parts subject to normal wear and replacement, and certain other items are excluded. ***Does not apply to fluid and filter changes or periodic inspections. Please refer to the maintenance section of your owner’s manual to determine all appropriate maintenance intervals.