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Dirt Bike Mods & Maintenance
gas question
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[QUOTE="jmics19067, post: 622772, member: 27963"] I could not tell you whether leaded fuel is ok or not for a yzf. My best uneducated guess is that the proper maintenance and inspection will outwiegh any pluses or minuses of the lead on the valves. The only study I have ever seen concerning fuel was that unleaded fuel was not a major contributing factor to maintenace costs on New York City taxi cabs on the older leaded fuel designed engines. Maintenance costs on someone abusing a fleet of car engines is worlds different than someone racing an engine designed for 13000 rpm.My best theory is that leaded fuel will not be a problem with deposits with proper and timely maintenance and may help with valve seat recesion beyond the intended service life of the engine. I don't believe you can lap titanium valves and if lead deposits where allowed to form, burning the valves would be the evil in the opposite direction. I have no experience in 13000 rpm titanium valved engines so hopefully somebody else can share some education on this. [/QUOTE]
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MX, SX & Off-Road Discussions
Dirt Bike Mods & Maintenance
gas question
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