Fatigue, age, stretched, in general, they probably have been tighten and
retighten just too many times to continue hold torque properly. On most of
todays cars it is recommended replacing all head bolts with every overhaul.
Brian Sanborn wrote:
> Peter,
>
> Why do you want to replace these bolts. They are very special super
> strong bolts made for that task. Unless they are damaged I would not
> replace them.
>
> Brian Sanborn
> 62 TR4 CT16260L - Groton, MA
>
> My TR4 Restoration Web Site
> http://www.net1plus.com/users/sanborn/Home.html (Big Update on 6/13/99)
> E-Mail: sanborn@net1plus.com
>
> -----Original Message-----
> From: Peter Zaborski <peterz@merak.com>
> To: 'TR6 List' <triumphs@autox.team.net>
> Date: Tuesday, July 13, 1999 9:37 AM
> Subject: tr6 engine bearings
>
> >
> >Listers,
> >
> >Some questions about replacing the main & rod bearing shell son a TR6...
> >
> >I am trying to acquire all the pieces I might need for an upcoming
> in-place
> >main & rod bearing replacement on my TR6. Although I think I looked in all
> >the right places, I cannot find any listings for new main bearing cap
> bolts.
> >I looked in TRF, Moss, VB and Rimmer catalogs and none of these show these
> >bolts. Am I looking in the wrong places? Where is the listing for main cap
> >bolts?
> >
> >On a related note, is there a trick to avoid damaging the front engine
> plate
> >gasket when replacing the front main bearing? It looks like that gasket
> >might sustain damage when the front sealing block is removed.
> >
> >Any other thoughts or suggestions on this seemingly straightforward task?
> >
> >Thanks as always.
> >
> >Peter Zaborski CF58310UO
> >
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