Inliners International Forums General Discussion Engines Replace 2SE with 2G on 84 integral head 250?

A major source of vacuum leak on this engine is the exhaust manifold gasket to intake. with the carb off you can see what looks like a tin can lid (circular pattern), this is part of the gasket, transfers heat from exhaust to intake. when it burns or rusts thru you have vacuum leak (full time EGR!).