ok am going to use an internally wastegated t3 turbo....what do you use as a gasket for the internal wastegate mated to the turbine housing. also from the three bolt flange to the downpipe....I haven't been able to find anyone that sells these gaskets and the highest gasketmaker temp I can find is 750 'F which I don't believe to be high enough....let me know what you guys are usin thanx
Casey

 

you'll see in a search that lots of people(including me) don't use a gasket for the dp to housing. Usually the carbon from the exhaust will create enough of a seal to keep it from leaking.

 

There are also thin ss metal gaskets that a lot of the turbo builders use. Check out http://www.turbocharged.com They are a very large distributor of turbos on the west coast. James there is very helpful, I'm sure he could give you a quote. If you end up running a ss metal gasket, just call and ask him for a price. Or even check ebay, I'm sure someone will have one. GL.