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Port and polish: how to ?

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Ok I saw somewhere on this site a how to port and polish your bike by yourself. I think it was one of the stickys, but not sure for which forum. Can anyone give me a link if they know.

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That is a good start in learning. A good tuner takes this to a very high level uing a flow bench. 90% of the shops just do clean up.

Once you feel good about the files , you can grab a Dremel Tool from a local home center and carefully smooth out the casting even better.

The intake ports should remain with am 80 grit pater or sand blast look while the exhaust can be polished up some to keep them clean.

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