Re: Exhaust manifold questions...

[audidudi@mindspring.com (Jeffrey J. Goggin)]

>I would use the extrude honed manifold since you have it. However, I would
>have it heat coated if you have not done so already. I'm talking about an
>actual heat barrier coating, not just some pretty paint. This will greatly
>reduce the thermal stresses caused by the expansions of the metal at high
>temperatures (which is what causes it to crack in the first place).

Jet-Hot has a facility in town and I'll be taking the downpipe and manifold
(whatever I decide to use) to them for treatment.  It might not be the best
available but it's cheap and local...

>Two-piece is supposed to flow better, I still don't know why anyone would
>even fool with the Dialynx manifold when the 2-piece is so well designed.

Maybe because it costs $650-700 and doesn't fit an Ur-Q without some
modification?
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