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MX, SX & Off-Road Discussions
Dirt Bike Mods & Maintenance
YZ 250 piston?????
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[QUOTE="jmics19067, post: 672992, member: 27963"] You are describing the exact situation I go thru. I run yamalube 2r at 32-1 with c12 ona 94 yzwr 250. I talked a little bit with Rich R about this and basicly , if you dont foul plugs, not dripping splooge everywhere, the bike pulls relatively clean, and you are happy with the power just set back and smile. If I do any modifications to the bike over the winter I will usually rejet in the spring<cool weather> on a sand track <high load> as best I can. 90% of the time that will carry me over being on the rich side for trail riding in the summer. I am usually somewhat close enough so I dont foul plugs in all circuits but if I ever really put the bike under a load I know I am going to be relatively safe. Of course if I fouled a plug I will reset. I assume the heat of high rpm/load I guess is what cooks the carbon hard and if you are jetted too way too rich for those situations is when you have the buildup problem. [/QUOTE]
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MX, SX & Off-Road Discussions
Dirt Bike Mods & Maintenance
YZ 250 piston?????
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