On stock applications, it "ok" to reuse headbolts...but they need to be cleaned
and the threads "chased" (cleaned) for proper TQ readings. On any type of
modified (Supercharged especially) rework...use NEW bolts. Preferred is ARP
Studs.
Again, don't forget to run a thread chaser on the head bolt holes (on the
block) before installing the new bolts.
- Bernd
> My understanding is that when you torque them down they stretch a bit and
> that's normal. You can't stretch them again.
>
> I would ask Bernd and go with what he says.
>
> ----- Original Message -----
> From: "Wisotzkey, Rich" <Rich.Wisotzkey@gd-wts.com>
> To: <dakota-truck@buffnet.net>
> Sent: Monday, April 30, 2001 9:21 AM
> Subject: DML: RE: Re: F*** :) What's the deal?
>
>
> > Please don't tell me you can't reuse the head bolts!!! The manual doesn't
> > mention replacing them. I wasn't sure about this and ask the service
> people
> > at the dealership. They said they reuse them all the time, and I didn't
> > need new ones. Now I have the engine just about all buttoned up. Should
> > they be changed or not?
> > Rich - Ashburn, VA
> >
> > -----Original Message-----
> > From: WOT or waiting at a Red [mailto:dakatack@home.com]
> > Sent: Monday, April 30, 2001 10:56 AM
> > To: dakota-truck@buffnet.net
> > Subject: DML: Re: F*** :)
> >
> >
> > Tim
> >
> > Did you reuse the old head bolts? If you did, shame on you.
> > Never, never, never reuse head bolts. If you got new ones, where did ya
> get
> > them and what grade were they.
> >
> > Patrick O'Day
> > 2000 Dakota 4x4, 4.7L, CC
> > Profile at www.dakota-truck.net/profiles/dakota/Cy9WFjn1QtCYw/profile.htm
> >
> >
> > ----- Original Message -----
> > From: "Tim Berry" <coolva1@home.com>
> > To: <dakota-truck@buffnet.net>
> > Sent: Monday, April 30, 2001 8:36 AM
> > Subject: DML: F*** :)
> >
> >
> > > Well.. I was puttin on my heads yesterday, (blew headgasket) and was
> > torqued
> > > them to 50, then was on the 3rd bolt, first side, workin my way up to
> 150
> > > FT/LBS, and SNAP, BAM... head bolt broke, and elbow slammed into the
> > > truck... My dad got the bolt out, and my elbow still hurts and is still
> > > swolen (12 hrs later)... (pullin with both hands, and elbo slammed into
> > > fender, sharp edge too)
> > >
> > > I ordered some new bolts... if I have to do this again, I'm callin for
> > ARP
> > > studs before I even take the heads off.. that way they will be here :-)
> > >
> > >
> > > Oh well... They should be here tomorrow....
> > >
> > > Tim Berry
> > >
>
>
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