How serious is this and what is cost to fix?

[Marc_986]

Originally Posted by 97gtaboxter

If this is the case I have even though about replacing the engine with a higher performing one. I have read 996 and Audi engines can work. I could be getting ahead of myself.

I think you are getting ahead of yourself indeed. Many reasons to choose another engine, but money and effort are a very different factor in that case. So unless you are prepared to do it yourself and take a year (assume Porsche engine) or two (Audi engine) I think it makes much more sense to fix your current engine.