Lifting heads

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Feb 7, 2007 | 10:37 AM

z2894droptop

Thread Starter

Registered User

Joined: Jun 2006

Posts: 58

From: Texas

Lifting heads

I have heard of it, but I am not sure what causes it. What can I do to prevent lifting the heads?

Feb 7, 2007 | 10:53 AM

tireburnin

Registered User

Joined: Jul 2002

Posts: 1,193

From: San Diego, CA

It is caused by high/excessive cylander pressure. It usually occurs when lots of nitrous is used with improper timing.

It can be prevented with good tuning, good head gaskets and head studs.

Feb 7, 2007 | 07:14 PM

andy katzelis

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Joined: Aug 2002

Posts: 413

Right on, excessive cylinder pressure from detonation. You'll know it happened when smoke pours out of the exhaust. Upon head removal you'll notice that the bolts are loose.