[ZDriver]

I had a valve job done on my 71 240z and now I have an exhaust leak between the header and the head. Is there a gasket that is thicker on the exhaust port than the intake port? And where can I find one? The one I removed was thicker on the exhaust ports.

 

[TimZman]

Never seen that, are you sure it wasn't just torqued tighter up top? Best bet is to get it warm and tighten the @!#$ out of it...or you might have a slight warpage. This is a very common problem, especially if you have a Pacesetter (JUNK) Header.