[DML] Re: Rusty Exhaust Manifold Studs

["content22207" <brobertson@xxxxxxxxxxxx>]

Stock exhaust manifold studs are M7x1 -- rather uncommon in carbon
steel, impossible to find in stainless steel. Those same holes will
tap extremely easily to 5/16x24 (24 TPI is almost identical to 1mm
pitch) -- very common in stainless. Tap will thread in as easily as a
bolt, which is useful for the studs on cylinders 1 and 4 hidden behind
the crossmember. Replacing carbon studs with stainless steel would
make future removal problem free. Don't forget the studs that hold the
manifolds to the crossover pipe (M10x1.5 -- also common in stainless).

Bill Robertson
#5939

>--- In dmcnews@xxxxxxxxxxxxxxx, "D F" <funkstuf@xxxx> wrote:
> Just a note:
> One problem with these things is that the studs holding the exhaust
manifold 
> are pretty small and often rust.  My car was purchased and started
much like 
> yours, with a roaring exhaust leak.
> Anyway, the bottom line was that I had to take my heads off to get the 
> exhaust manifold studs out.  This is just a suggestion.  It is not a
bad 
> idea to replace the old studs with larger sturdier studs.  I realize
some 
> people won't like that idea, but, it might make them easier to get
off next 
> time.  That's what I did.
> Sincereley,
> Dale Funk
> 4984
> 
> 
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