What are the torque settings for cylinder head?

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’s the torque on head bolts?

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.

Should head bolts be lubricated?

As a rule, the threads and underside of the head on most standard automotive head bolts should be lubricated with motor oil before the bolts are installed. The torque values specified by the engine manufacturer are typically based on oiled threads and fasteners – not dry fasteners.

What can happen if too little torque is applied?

Insufficient torque When you apply exactly the right amount of fastening force, you can rest assured that the bolt will transfer the ‘hits’ as well as the load of the belt to the bulk of the engine, which will absorb them. This, in turn, will lead to incorrect belt tension and, eventually, to belt and/or engine damage.

Why are the torques on a rover so tight?

In general, the torques specified by Rover were rather conservative and were designed to protect threads from a worst case scenario, this is why some will feel less tight than you might expect. However, these are the torques used for production engine build and have been proved to work so there should be no need to give it “a bit more for luck!”

How to tighten cylinder head and engine block?

In short. Tightening the surface of cylinder head and engine block must be “ideal” straight and clean. Check the cylinder head is cracked or porous. Then tighten the screws as per specification mentioned above.

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.