I have a sluggish 79 magnum xk. It has low compression, around 90... but i think that's due to having only half of a base gasket, which i'm in the process of replacing.
However, i'm also concerned about not having enough back compression from the exhaust. The bike has a stock exhaust, but it never had anything holding the 2 major pieces of the pipe together. I mean the skinny part that connects to the engine doesnt seal well with the larger section of the pipe. I looked at another magnum and it had a very serious bolting device installed, and mine has none.
Any ideas what this piece is called and where i could locate it? any useful alternative would be appreciated as well.