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Post by jdl357 on Sept 14, 2017 19:56:53 GMT -5
I'm putting on a new bbk and have done most of the prep work to the cylinder. Was reading about gaining power by widening the exhaust port. Can I do this without messing up my cylinder?
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Post by ryan_ott on Sept 14, 2017 20:30:05 GMT -5
Sure it's easy enough to do with files or a dremel. 68% +/- cord width of bore would make for a happy scoot. But you don't need to go that far. Chamfer the port edges when your done and wash the cylinder.
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Post by jdl357 on Sept 14, 2017 20:37:01 GMT -5
What's the chord width of my bore?
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Post by ryan_ott on Sept 14, 2017 21:23:55 GMT -5
Chord width is the diameter of bore, 68% is just about 32mm on a 47mm bore.
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Post by jdl357 on Sept 14, 2017 21:27:14 GMT -5
Ah hah, thanks for the info Ryan.
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Post by ryan_ott on Sept 14, 2017 21:37:14 GMT -5
Comparison of what 32mm looks like on a 47 bore. Right is just stock.  |
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Post by 90GTVert on Sept 15, 2017 4:53:32 GMT -5
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