Just wanted to thank rusty for the heads up on the die grinder, so far its working great. After further measuring the gtm exhaust manifolds the hole is 1/4 smaller then the flange where it connects to the turbo slowing the air flow down. Will take some pics tomorrow and show my progress. I will wait and send these to vsr because if they can fabricate these I want you guys to have the openings the same size to allow more exhaust flow going to the turbos. Stay tuned!!
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Originally Posted by Rusty
Yea, you need an air powered 1/4" die grinder with a couple of large football shaped burr bits for roughing. Then a couple of smaller diameter burr bits for finishing. Ball shaped. If you want to go deep into the manifold. Then you need burr bits with a 6" shaft on them. You'll burn up the Dremel on the first port you try to do. I get my die grinders from Sears. I burn them up, and they give me a new one.  Local Sears store has them on stock to boot. |