[s-cars] Re: 1987 Audi 500CS Turbo Exhaust Manifold - Help!

[Jim Green]

--- "Dave C." <conner at cfm.Ohio-State.edu> wrote:
> Ameer wrote ...
> "If you want to prevent the same thing(cracked
> manifold)  from happening
> down the road  ...  then get it coated w/ ceramic
> coating. "
>
>
> Given that most of the single piece manifolds seem
> to be cracked.
>
> Are the typical cracks really a problem?  Cracks
> below a certain size OK?
>
> IF the typical cracks are a problem, I wonder if
> they could be sealed by
> having the cracked manifold ceramic coated, and how
> long would it last?
>
> Has anyone tried it?


I don't think ceramic coating is going to help at all
with an already cracked manifold, it surely will not
fill the crack.  If you're not hearing ticking through
the crack, have the face machined flat and stick it
back on the car.  Now that it's cracked and you've
machined it flat there will be far less stress on it
than before and it shouldn't grow much more.

HTH

=====
Jim Green
'89 90tq 034EFI Stage IIc
http://www.mswanson.com/~jgreen/car_home.html

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