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Dirt Bike Brands - Other
426F cyl. head
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[QUOTE="DualSportr, post: 128407, member: 19592"] Rich, We're chopping the top off the piston. We decreased the pin to deck height that way insead of moving the pin upwards in the piston. The total stroke is only 2mm over stock, so the change in deck ht is slightly less that 1mm (.010" for you american inch dudes!). In fact, the deck ht on the stock piston would work, but it's too close for comfort -- we know how the m/x'ers like to rev these things! As far as changing the cam timing to match the decreased dwell time, we leave that up to the customer. Some of them like the way the stock cam setup works with the stroker, but most like us to mess with cam timing slightly to smooth out power at lower rpm. Forgive me for not being specific about what's done - It's Sunday and I've got brain fade! E-mail me at work and I'll tell you exactly which cam, which way :) [/QUOTE]
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Dirt Bike Discussions By Brand
Dirt Bike Brands - Other
426F cyl. head
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