How to port a stock header??
I've got a B18b and I bought a B18c1 exhaust manifold that I'd like to get(or do myself) ported. Has anyone on here done it before or know of any sites that will walk you through it?? Any thanks would be great. And no I'm not interested in buying an aftermarket header.
Not asking if there is any reason.......just asking how to do it. Or where to get it done at. I have a B18b in my car and I have a B18c1 exhaust manifold. It is a little larger in diameter than what I have now but I'd like to get it ported just to give it more breathing room.
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