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Yamaha MX & Off-Road Dirt Bikes
THE reason not to let just anyone work on a 4 stroke
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[QUOTE="oldguy, post: 1314674, member: 16965"] well lets see Spiders 450 F has had kibblewjite stainless valve and he has over 80 hours on them with not one shim needed. Eric G currently has that engine to replace the crank and work some of his magic on it but the one thing that is staying the same is the Valves. I also like the part about his $99 valves being cheaper then most aftermarkets when the Kibblewhites are about $30 each. With his logic on dimples on the valves quieting the exhaust down I have to agree the dimples on our piston really had the effect of quieting down that bike. It was silent after the piston got dimpled :nod: [/QUOTE]
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Dirt Bike Discussions By Brand
Yamaha MX & Off-Road Dirt Bikes
THE reason not to let just anyone work on a 4 stroke
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