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Originally Posted by cityevader  I did grind out the manifolds to more smoothly flow, as well as the exhaust gasket. But nothing to the exhaust. Where/how much? |
Take your muffler/intake off, take a exhaust gasket and put it on engine, then carefully cut out the gasket to match exhaust/ intake port on engine (careful not to get shreds inside engine). When done take the gasket off being careful not to turn it around or turn upside down, then put it against manifold/ muffler and see how much metal needs to be removed. Trace with a marker then just match gasket wit a dremel, which in return matches intake/exhaust. My muffler blocked the exhaust port on the engine by at least 25%, prob 15% blocked on intake...