Quote:
Originally Posted by Mad Mat
yes will take photos tonight and upload them this week to show. its the same with after market manifolds. they get the exhaust flange made to the same size as gasket... lol so u have this massive difference in sizes from head to manifold. look at Dane's, kris's, marc's headers for instance.
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I thought you're putting on a turbo?
the stock turbo manifolds and dump pipes have lots of meat in it to carve out for better, reliable flow
you should also keep in mind that the intake ports should NOT be smooth... a rough textured surface is best to promote fuel atomisation.... smooth surfaces causes fuel pooling and poor engine efficiency results!