Editing How to port your Engine
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When the flaws in the EXHAUST port have been removed, you may polish the port with sand paper. Make it as smooth as you would like. You can also match the exhaust port to the header and gain a few extra horsepower just from that. | When the flaws in the EXHAUST port have been removed, you may polish the port with sand paper. Make it as smooth as you would like. You can also match the exhaust port to the header and gain a few extra horsepower just from that. | ||
Good luck and remember that you will be doing this at your own risk. | Good luck and remember that you will be doing this at your own risk. I followed these steps and it helped my bike work a little better. It also worked well for a Yamaha dealer mechanic's KX250. This technique worked well for both 2 and 4-strokes. | ||