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Yamaha PWC Performance Forum
Gas Power Valves or not?|
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I got the wave eater kit last year to avoid power valve problems. I have heard that the power valves can still fail by breaking, is this common? Would the RIVA Gas Power Valve Kit prevent this from being a problem, or would I just be creating other worries? Is it worth spending the money for the Gas Power Valve Kit over the replacement RIVA or R&D valves? Thanks............Ren Smith
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I did the Wave Eaters & R&D's on my ski. I wanted gas valves but couldn't justify the $$ involed nor did I want to get to far away from stock for warranty reasons.
KM Will work for gas money! |
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On my 2005 800PV SJ the electric PVs will go before I ride it, gas PVs are, IMO, the only way to go, better performance and reliability.
Sad century when you have to drop SD parts in a Yamaha to make it reliable... 11 Building : 2003 S/S triple STXR (35% completed) 2003 ltd SXR (95% completed) 2001/02 ltd XP (0% completed) |
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Your waveeater clips will be just fine, the chances of your stems breaking are pretty slim. It happens, but its rare, just make sure your cables are adjusted correctly.
Gas valves wouldnt be worth the $$$ and effort unless your are running tripple pipes. 2000 GP1200R Region 1 Novice 1200 Limited |
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I agree that the odds of snapping the shaft of the PV aren't thaaat great. My wife's GPR ate a PV last year, but that was before I had waveeater's clips on (pin worked out). I was plagued with PV servo motor problems this year on My GPR and decided to go to gas valves. I haven't had a chance to try them yet - I have the engine apart and am waiting for the rebuilt crank to arrive.
If I were you, I wouldn't worry about it. Mine: 2001 Stage 2 GP1200R Wifes:2001 Stage 1 GP1200R |
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If you want the ultimate in reliability and performance, RIVA gas valves are the way to go. IMO they are worth the money especially if your already concidering going to the billet valves. We've set up gas valves on both single and triple pipers and some 1300's. Slight modification has to be made for use on single pipers, and the guilotines nust be machined for use on 1300 setups.
The setup is almost bulletproof and dont reacll ever having a problem with valves breaking. ISLAND RACING WATERCRAFT PERFORMANCE (516) 883-0090 ISLANDRACING.net |
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u go gas and u never go back.
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gas valves work for me! they have an on/off type feel to it though, it is only at a disadvantage to the stock ones if you like to ride slowly for extended periods,,,,,,[gasp!]
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You asked for : "Gas powervalves or not?"
Let me put it this way : "Gas powervalves or break?" 11 Building : 2003 S/S triple STXR (95% completed) 2003 ltd SXR (95% completed) 2001/02 ltd XP (0% completed) |
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riva racing valves = NO break
110 hrs on my riva valves not one failure. Thanks riva r&d rideplate,r&d toploader intake grate,stinger 2,riva valves,riva heads,protec cdi,riva stuffers,carbs rejetted,riva arrestors, rpm couplers, rpm renegade cut 15/19 solas |
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Joe if I remember correctly you have the R&D/Riva billet valves that bolt on and are still electric, not the gas valves?
11 Building : 2003 S/S triple STXR (95% completed) 2003 ltd SXR (95% completed) 2001/02 ltd XP (0% completed) |
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that is correct. gas valves are for seepoos and sissys
r&d rideplate,r&d toploader intake grate,stinger 2,riva valves,riva heads,protec cdi,riva stuffers,carbs rejetted,riva arrestors, rpm couplers, rpm renegade cut 15/19 solas |
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i think you are missing the point....see gas valves= instant throttle response....electric valves = just that- almost rheostat like response...dont feel too badly next time a sissy passes you though! hopefully he/she wont be riding a seapoo!
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with a name like bunny i wont worry about it to much. I promise
r&d rideplate,r&d toploader intake grate,stinger 2,riva valves,riva heads,protec cdi,riva stuffers,carbs rejetted,riva arrestors, rpm couplers, rpm renegade cut 15/19 solas |
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imo, the gas valves can be set up to smooth out the power band. the oem electric valves are to "on or off" with the power band. this is how the gas valves are setup on my boat, the blend is very progressive, which is nice for cruising....rather then the surging the oem valves would induce depending on where the "snap" was set. i believe the springs that are in there now are per group k recommendations....id have to look at the spring to be sure. one thing i know, when i first rode it setup with (i believe lameys) springs the power hit to hard for my riding style...
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Gas valves are safer and more reliable just because electric PVs are too complicated for marine use IMO...
11 Building : 2003 S/S triple STXR (95% completed) 2003 ltd SXR (95% completed) 2001/02 ltd XP (0% completed) |
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I will agree with Hoptacong on the gas vs electric. With tuning and time you can get the gas valves to operate almost seamlessly in the power band. I've had the Riva/R&D valves in my boat prior to the gas valve conversion. Never had a valve problem with the replacement valves only servo problems. I even ran a Crossbones controller for a while (it's for sale if anyone is interested). With the gas valves in my boat now I no longer feel like I'm landing with the brakes on when the boat comes out of the water and then re-hooks. With the YPVS my boat always felt like it was surging, even with the crossbones controller keeping the valves open. With the gas valves It's not nearly as noticable(read: instant open after closing). If you don't want to spend the money and additional time to tune the gas valves, go with the Riva/R&D replacement valves along with your wave-eater clips and connectors and leave the YPVS in the boat. Either way keep an eye on things and you shouldn't have any problems.
Mike My setup: 99 Gp800,Lots of R&D, Riva, UMI, Solas, Pro-tec parts, FPP twins,Blackjack carbs, Gas valves Wife: 01 XL800 (stock) |
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to hopatcong, i take it you are refering to the red sea doo springs that riva uses.. mine has been set up with the red adjusters turned all the way out and the power comes on so hard on my tripple piper that it makes cruising slowly very difficult. i think i'll try turning them in a bit in order to delay the rpm at which they open. [ie higher rpm] as you suggested this ought to 'soften' the abrupt response a bit. i'll post the results after testing....
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to sandiegogpr1200,,,sorry for trying to help dude!
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bunny, dont take things to seriously I was joking around. I just like to make 11 uncomfortable. No harm no foul
r&d rideplate,r&d toploader intake grate,stinger 2,riva valves,riva heads,protec cdi,riva stuffers,carbs rejetted,riva arrestors, rpm couplers, rpm renegade cut 15/19 solas |
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