From: Bobby Joe Pendleton (bjpendleton@charter.net)
Date: Sun Aug 01 2004 - 16:36:58 PDT
about the only time I have found it necessary to replace head bolts is if
their past is unknown or if the engine has been seriously over heated.
BjP
"Maneo Qualis Manebam"
----- Original Message -----
From: "noel shelley" <noel@shelley1722.freeserve.co.uk>
To: "Military Vehicles Mailing List" <mil-veh@mil-veh.org>
Sent: Sunday, 01 August, 2004 08:03
Subject: Re: [MV] M35 leaking head gasket/ more info?
> Hi Folks ,
> With reference to replacement of head bolts / studs . On
> modern engines built for lightness ,often of aluminium , the weight of
> generously sized bolts Etc adds up . The bolts used are only JUST big
enough
> size and on being torqued up approach the elastic limit to the extent that
> they are only safe to use once due the fact that they would stretch in
> service and not return to their original length.
> On older engines where weight was not a consideration the bolts were of
> greater size and on tightening came nowhere near the elastic limit and on
> loosening did not suffer from stretch to an extent worthy of note .
> I have repaired many engines , both ex military and civilian and very
rarely
> was it recommended or found necessary to replace bolts , nor did I suffer
> from subsequent failure due to bolts stretching .
>
> The opinion of a member of the old school ! Noel
>
>
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