[V8] Head bolts

[Coleman, David]

My understanding is the headbolts do stretch and need to be renewed
every time.

DaveC.

 

> -----Original Message-----
> From: v8-bounces at audifans.com 
> [mailto:v8-bounces at audifans.com] On Behalf Of Ingo Rautenberg
> Sent: Tuesday, November 21, 2006 11:16 AM
> To: Jason Wilkerson
> Cc: V8 list
> Subject: Re: [V8] Update: 93 4.2 oil leak fixed!!!
> 
> Hmm.  I think they ARE Torque-to-yield bolts.  Designed 
> specifically so for modern aluminum engines, where the 
> expansion rate is 2x those of cast iron.  Which is why you 
> don't want to re-use them.  Or am I mistaken?
> 
> Ingo
> 
> On Nov 21, 2006, at 10:07 AM, Jason Wilkerson wrote:
> 
> > Without question - replace the head gaskets, keep the head 
> bolts.  If 
> > there is any question at all on the condition of the mating 
> surfaces, 
> > have the head and block surfaced before putting it back 
> together.  If 
> > you want to use new head bolts you can, but you shouldn't 
> have to on 
> > this car, as the bolts are not torqued to yield.
> >
> >          Good Luck,
> >                 jason
> >
> >
> >
> >
> > 
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