[250R cylinder...] - ATV Riders Forums - Honda, Yamaha, Suzuki, Kawasaki, Polaris, CanAm, Arctic Cat, Kymco ATVs

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250R cylinder...
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Posted by: LT250Racer609

need a 265,310,330 or 350 PV cylinder for a 86 250R...

Posted by: SuperChris

i have one ported by EEE.

Posted by: LT250Racer609

whats size?

Posted by: SuperChris

.08 over. The bore is fresh .03 inch clearance with a wiesco piston. The piston still has many races left on it(only has about 5 hard hours runtime). You may want to get new rings, the head has been cut to match a wiesco piston's dome and the porting done to the cyl. It's on an Outlaw Kart right now, Too bad you live so far away, you could come watch it rip. I may be able to get some dig. video of it though. I'm first in points and just won my Trophy Dash last night, made my way up to the front in the main and got spun out. The cyl. does pretty good.

Posted by: LT250Racer609

if this isnt a power valve motor im not interested...i already have a 265 Ported and polished cylinder done by GTR on my quad right now that runs on 110 octane..

Posted by: 350rpowervalve

350 pv is the best cylinder on the market

Posted by: pharit

ok i;m retarded whats a powervavle cylinder

Posted by: SuperChris

PV cylinders have valves or a valve that mechanically opens another set of ports or changes port timing depending on engine speed or demand. This makes for a very large power curve and a more rideable engine in most cases.