Whooopasss

I was looking at a used manifold for a B16 and when we put flange side that attaches to the head on top a flat metal area, I can see that it is not as flat as it should be. it goes up on one side by more than a hair, not noticeable until you really look at it hard. My question is, is that too much warp already?? is there an acceptable warp??

Full-Race Geoff

it will not work well at all if it is warped. If you need it decked, we can do it for you.