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Powervalve motor?


Craig B

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Hardly anyone builds them it seems. I believe they're a hard recipe to make it work right. Is anyone here running a power valve? I just sold my quadzilla and I loved the power valve on that.

Gusto take a look @ my gallery and see the Zilla I built a few years ago. Killer torque, that's the kind of torque I'm looking for in my Banshee. Looking to go 465cc

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A HPR19 pipe on your zilla! Wish i had that, i was running an Aaen.  Do you still have the bike?  She is a beauty.  I already regret getting rid of the bike, i just couldnt afford the aftermarket and sourcing parts.  Wish they were made for more years, they are such nice rides once the bugs are sorted out. 

That and your atc250r were the two machines that scared the hell out of me when they came out back in the 80s.

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It seems that the cheetah pv motors are a pita to get right.

Right now I have a 7mm stroke 72mm bore cheetah pv motor. Still trying to get the thing tuned in.

Awhile back someone had mentioned that there were other powervalves that would fit the cheetah cylinders other then the ones from trinity but like everything else with this motors, no one wants to talk about them

 

Sent from my VS990 using Tapatalk

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My tuning progress got halted by the white stuff and moving, but I love my pv'ed trex motor. The valves give me a 196 to a 204 exhaust duration window. Can't wait to see how it will run switching from PT's to rockets this spring.

You may end up needing to increase stinger diameter on those.

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  • 2 weeks later...

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