As I said, My shop manual is silent regards gaskets. This manual is part #
AKM 3616B copyright 1981. The parts manual is part # RTC9852CA dated January
1980. Since it shows the gasket as #GEG692, manifold to cylinder head, part
of gasket kit RTC2576 on both the section illustration of the exhaust
manifold, pg 1D 08, & also in the illustration of the gasket set mentioned,
pg 1D 14, I must assume that is was used in assembling the engine
originally, It is not noted as a later or modified part.
I was not aware of any GM engines being built without exhaust gaskets, as
all my parts books from Felpro & Victor, etc show a listing.
My personal opinion is that not using gaskets will result in leaks that are
unpleasant at best.
Jim Stuart
lmg@gomog.com wrote:
> Hi Jim and Paul,
>
> Jim, you and I have curiously different materiel to consult. I have
> opened up a number of SD1s and Vitesses. I have never found a set of
> gaskets on either manifolds or heddars. The shop manual and the Haynes
> manual both warn of cleaning the surfaces after removal "as no gasket is
> used between the two parts" p.62 Rover 3500 1976 to 1987.
>
> As Paul states, it is now recommended that exhaust gaskets be used and
> there are those made specifically for the engine. I change mine whenever
> I remove my heddars. Considering the caution of dealing with an aluminum
> block I would avoid lock washers and go for the flanges made
> specifically for this. There are also stainless exhaust bolts made for
> the V8s as well.
>
> Lorne
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