bryan at skiblack.com
Fri Nov 29 21:09:59 EST 2013
There aren't, AFAIK, any differences in the crankcases themselves for the turbo engines, just short stroke and long stroke cases. The turbo cranks were nitrided, and since it's possible to have that done there is some argument to using a standard crank and having it treated instead of seeking out a turbo crank that may well have been abused during its life. I'd suggest low compression, if with carburetors the turbo CR of 8:1 would probably be good, along with the stock turbo 10 psi limit. Since you're not going for an all out setup, you should be able to end up with something that works reasonably well. As Seth pointed out, keep in mind that the Corvair turns the opposite direction of most engines.
On Nov 29, 2013, at 3:54 PM, MJehle123 at aol.com wrote:
> I want to put an M90 GM supercharger on a Corvair engine. I was told I
> should probably start with a turbo block, and crank. Should I use a particular
> year? It's for a motorcycle that will not be raced. The blower is mostly
> for looks.
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