<VV> RE: JetHot coatings on turbo exhausts

[Frank F Parker]

> Jim, thanks for the response.  This is exactly the information I was
> looking for.  Did you also have them coat the exhaust turbine housing?
> Would this be a good idea?
>
> Norm
>
The usual silver Jet-Hot according to them is good for 1300 deg F. I used
it on a Honda exhaust manifold connected to a custom turbo and the coating
dulled up and little aluminum balls came off because the exhaust temps
were 1500 deg at extended wot. Most coating companies offer a higher temp
coating suitable for the turbine housing.
A stock 180 hp turbo would usually get away with normal JetHot because
the mixture at wot is very rich keeping temps down. In addition wot is
done done for very long .
My next Corvair project will be a Corsa turbo like I bought new in 66
except with modern low intertia wastegated turbo and fuel inj with micro
processor controlled water/alcohol fuel injection. A motor like this that
has boost immediately in 1st gear will build temps fast and will need the
2000 deg version that JetHot sells.

regards,

frank parker