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Dirt Bike Brands - Other
426F cyl. head
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[QUOTE="sfc crash, post: 125980, member: 23896"] hey rich,wouldn't performance mods for a four stroke yzf motor be the same as a car, ie, port matching the heads to intake/exhaust manifolds, pollish the exhaust port(some in the auto world argue that leaving intake "rough" helps to atomize the fuel mix) increase vavle dia with a three angle valve seat, increase vavle duration( either with a cam and or rocker ratio) ,run richer on the carb, advance the spark timing in conjunction with higher octane fuel, and low flow air filter and exhaust? i fear i might have just shown my total ignorance of the subject, but i'm picking up my wr426 this weekend and had planned on those mods. :think [/QUOTE]
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Dirt Bike Discussions By Brand
Dirt Bike Brands - Other
426F cyl. head
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