hey, I got a s/steel high mount manifold, and wanted to know whether the one piece exhaust manifold gasket are any better than the single piece gasket per runner setups? I've got an exhaust leak and suspect that the small indiviudal gaskets are leaking? Anyone else had similar issues? I've tightened the hell out of the bolts but it still leaks?

im guessing its an ebay one, it probly needs to be machined.

have you cut the manifolds between the cylinders to stop it warping? there has been a few threads re that issue and the cheap manifolds. cut between cylinders then get it milled flat again and use a genuine nissan gasket. thats the best way.

are copper exhaust gaskets anygood? whats a genuine nissan exhaust gasket worth(retial or trade)?

I thought it was only the low mount manifolds that had the warping problem? mines a high mount, plus it's brand new, I wouldn't expect it to have warped straight away?

yeah, dunno, only a straight edge will answer that i suppose...