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Coincidentally I've been pondering the notorious exhaust manifold
gaskets lately -- why in the world do they fail so much easier than
gaskets on other engines? My theory: thin wave washers on the mounting
studs. When I replaced the carbon nuts on my Renault block with
stainless steel, noticed most of the original wave washers were either
disintegrating or missing altogether. That of course allows the
manifolds to flex against their gaskets, and allows small amounts of
exhaust gas to escape -- both detrimental to longevity. I substituted
1/8" thick stainless washers (McMaster Carr Part #98370A028, which fit
recesses in the manifolds perfectly) to avoid such in the future. Did
the same on my current Peugeot block too.
Bill Robertson
#5939
>--- In dmcnews@xxxxxxxxxxxxxxx, "Harold McElraft" <hmcelraft@xxxx> wrote:
>
>
> It might be the notorious exhaust gaskets. Have they been replaced?
> Leaking exhaust gaskets can have that valve click sound.
>
> Harold McElraft - 3354
>
>
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