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Re: Re: Exhaust Manifolds
12/16/97 1:59 AM firstname.lastname@example.org
>.... although I've NBTDTY (not yet) I have also heard that there are real
>performance benefits from the insulating coatings on the inner surfaces
>of the manifold.
You bet there is. There's not a single pro racecar out there running
without it, afterall all an Internal Combustion engine is is a
heat/airpump. The less heat you waste heating the head and manifold the
more velocity you have at the exhaust outlet, which translate's to more
>I am a bit skeptical about the benefit of coating the
>outside of the manifold though ... it would likely help a little bit to
>keep down the underhood temp, i`but it seems to me it could also lead to
>heating of the manifold itself ... as the outer insulating coating would
>prevent the heat from being radiated. It probably would not be a big
It's not a problem at all, infact since your transfering less heat into
the metal your making it much harder to warp that manifold. (And if your
running the 2pc EM it's not a problem anyway!)
>and if the cost of coating both inside and out was the same or
>less than doing just the inside I'd probably do it. The coating does
>tend to make the manifold look better too ...
It does make it look nice! I think it cost me $430 to do 2 2pc EM's and
2 downpipes inside and out and that included Fed-x 2nd day shipping.
Eric Fletcher S.O.C.
'87 5KCSTQ with WAY too many toys.....
According to Einstein, the faster you go, the longer you live.
St. Louis, MO