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Honda MX & Off-Road Dirt Bikes
Please Help Fine Tune My Cr250, Im Stumped
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[QUOTE="Matt90GT, post: 1323988, member: 30871"] Here is what MXA used for jetting specs on the 03 bike, might help you get into the ballgame better: HONDA CR250 Main: 420 (400) Pilot: 30 (40) Needle: 6BHY38-73 (GBHY38-70) Clip: 2nd (1st) Air screw: 1.5 here is what they say about the 06, but applies to 02-07 motors: Q: WHAT ABOUT THE CR250’S JETTING? A: We always felt that the CR250 was on the verge of detonating. Going up one main made it burble. Going down one made it ping. So you might want to try their jetting, if that does not help then maybe a JD jetting kit (dont spend the money on the OEM needle, just get the JD kit), and then run some race gas mixed in there. [url]http://www.jdjetting.com/xcart/product.php?productid=87&cat=6&page=1[/url] [/QUOTE]
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Dirt Bike Discussions By Brand
Honda MX & Off-Road Dirt Bikes
Please Help Fine Tune My Cr250, Im Stumped
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