Hi everyone! <br />We have a 1978 boat with a chevy 181 taht has a turbo on it. We keep running into the problem that we blow the gasket between the exhaust manifold plate and the turbo. It will be just fine the 1st time we take it out after replacing it, but the 2nd time we go to take it out, it blows the dang gasket. We are at wits end as nobody around here seems to have seen this engine with a turbo. There is a toggle switch up front that seems to open some form of pressure relief valve. Does this switch need to be open every time we start the engine? Or, does this have nothing to do with the gasket blowing? Any help here would be very much appreciated.
