Thread: Yamaha Power Valve Options
12-17-2009, 06:07 PM #1
Yamaha Power Valve Options
Hey guys I know the stock Valves drop often. What options are out there to replace the stock ones? I know riva makes the gas ones and R+D makes some as well. Is that all thats out there? Thanks guys great forum!
12-17-2009, 07:12 PM #2
12-18-2009, 08:43 AM #3
- Join Date
- Feb 2007
- Cape Town, South Africa
12-18-2009, 08:47 AM #4
i dont see how the waveaters can keep the stems from breaking
not bashing waveaters
and not talking about the top of the valves but ive seen several snap just past the giloteen(sp)
12-18-2009, 09:30 AM #5
- Join Date
- Apr 2008
You can retrofit polaris gas valves to the yamaha cylinders too. They can be found pretty cheap on ebay
12-18-2009, 10:25 AM #6
Yes I work at a dealership and have seen many break at the bottom and the large valve section drop into the cylinder. NOT GOOD! I not sure how the clips can help with that happening. I like the R+D valves but I hate spending $450 to not go any faster! If yamaha made a good replacement I could get it at cost dang it! You would think yamaha would have come out with a bullit proof valve?
12-18-2009, 10:47 AM #7
It's not always about going faster. You will have to spend money on durability, i.e. pump tunnel reinforcement, rideplate/intake grate brackets, etc., and PV's are one of those things. After you replace the PV motor three or four times, buy waveeater clips and couplers, you could have bought a set of gas valves. One of the best mods you can do to a ski.
12-18-2009, 11:10 AM #8
Is there something you have to do to the gas valves every so often? Seems like on anything I have when I put aftermarket parts on it is not as reliable as the O.E. design. The gas riva valves are the only gas valves right? Thanks again guys!
12-18-2009, 11:22 AM #9
Put them on and don't touch them for years at a time. About the only thing that can possibly go wrong is having a bellows crack from old age, but they're relatively cheap and easy to replace.
12-18-2009, 12:08 PM #10
Seen a few oe guillotines break too, but the ones I have seen were due to tapping a piston or mechanical failure (binding up in the cylinder).
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