Originally Posted by ttAmerica RoadsterAWD

Hey guys, I searched the site but found nothing. For those of you in the know, my new sealing rings for my turbo exhaust have a flat side with a thin edge on one side of the ring, the other side is a full normal radius. What's the significance of this? which side faces the engine and which side faces the exit, or does it matter?? I don't think I saw this on the ring that goes to the turbo-to-downpipe, but the down pipe-to-exhaust triangular ring has this as well as the headers-to-cross over pipe also have the flat side with edge.

thanx

Originally Posted by william_b_noble

according to FelPro, the metal side goes towards the manifold. and it explains why. So the metal side goes towards the manifold>.

Exhaust Manifold Gaskets:
Exhaust manifold gaskets are another gasket type we get questions on. When installing Fel-Pro exhaust manifold gaskets, if there is a smooth, metallic side and a composite side, the metallic side should be installed facing out, meaning toward the exhaust manifold. This smooth surface of the shiny side will allow the flange of the exhaust manifold to slide as it expands and contracts during heat cycling from engine operation.

Originally Posted by ttAmerica RoadsterAWD

Thanks, but I was not referring to the head-to-header gaskets, I'm referring to the metal O-ring from the header to the cross over pipe below.......