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Dirt Bike Brands - Other
carb and jetting 83 cr 480? need some help please!
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[QUOTE="whenfoxforks-ruled, post: 1238028, member: 73147"] All them passages are engineered to be that way and removing material must be put back in somewhere. Otherwise the motor will never breathe properly. Can not get it jetted is a good symptom. Rule number one in jetting, rule out all mechanical factors. Early cr 125's were fun to "port", and to some degree seemingly ran good, BUT it was not the ticket at all! There is a science to the motor, there are software programs for these people with tools to learn how to properly put a porting tool in a cylinder. [url]http://www.optimum-power.com/products-e-design.htm[/url], Enjoy it as it is or throw it in the scrap heap, fix the other jug. [/QUOTE]
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Dirt Bike Discussions By Brand
Dirt Bike Brands - Other
carb and jetting 83 cr 480? need some help please!
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