Even if you have the waveeater clips you may want to check your power valves. Two of my PVs broke the stop at the bottom of the shaft causing the PVs to scar the piston. The waveeater clips are great, but don't offer 100% insurance.

01 GP1200R
Solas Concord 13/19
BH Sponsons
Riva Double Bar Intake
Riva Trim Tabs
Riva Ride Plate
Riva F/A
Riva D Plate w/chip
Pump Plug Kit
38CC Modified Head
2002 Alba Warrior

How many hours did the have on them and are these OEM valve?

KM

Will work for gas money!

tell me about it. The same thing happened to my other ski. The valve broke at the bottom and fell in the cylinder took out piston crank & cylinder.

It has 108 hours on the OEM PVs. The compression is still the same on all three cylinders (148 psi) with a 38cc modified stock head. I guess I'm lucky it didn't mess anything else up.

01 GP1200R
Solas Concord 13/19
BH Sponsons
Riva Double Bar Intake
Riva Trim Tabs
Riva Ride Plate
Riva F/A
Riva D Plate w/chip
Pump Plug Kit
38CC Modified Head
2002 Alba Warrior

gpr721 is right, The waveeater clips only protect the pin from falling out and the valve dropping. They do nothing if the stops on the valves themselves break or wear down. If your going to run oem valves(specially the older model gprs with the first generation valves)I would suggest a 10 hour inspection intreval. When inspecting the valve look for any shiny wear areas. If the tips of your valves have any shine at all they have made contact with the piston and have deposited aluminum on your cylinders. When i first purchased my gpr I ran the oem valves for only ten hours. The first mod i did was to get the r&d billeted valves. Thanks to the info I read on this forum. Keep in mind that power valve failure can be one of the most expensive repairs considering the cost of the new valves, piston kits and at the very least acid washing the cylinders.

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

the valve on the left is normal the one on the right has touched the piston. sorry about the pic but my camera was made by seedoo.


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

I still think they let a bad batch of -10 vavles out of the factory.

I had 1 that broke where the valve shaft meets the blade.

99 XL1200 Limited
Riva Stage II

2004 RXP (on order)

YAMAHA SAID THAT THEY DID NOT HAVE ANY PROBLEMS WITH THEIR POWER VALVES. THEY SAID THE 1300R HAS THE "UPDATED" VALVES. ?????

2003 GP1300R
66.5 MPH - GARMIN GPS
PPK
STEPPED SPONSONS

Well, I put the R&D valves with Waveeater clips in mine at 20hrs. I hope the R&D valves don't have these problems.

KM

Will work for gas money!

Guy's if you're breaking the stops on your power valves it's because the cables from the servo motor to the power valves are out of adjustment.

The stops are only there to prevent the power valve dropping into the cylinder upon a cable failure or when the cable gets outside it's normal travel range.

There was a bad batch of the -10 valves that will break at the bottom of the stem for no reason. Although having you cables adjusted will help, Only damage to the #3 PV or servo motor can be blamed on the cables.

The WaveEater Clips will prevent the stops from wearing and the pin from falling out.

The WaveEater Clips will prevent the type of damage pictured by GP1200RSANDIEGO.
I bet every older yamaha with power valves that don't have the updated version or the Clips look like those.

Brad

wave eater, Not that im tryin to start anything here but those powervalves are from gpr721s gpr. His ski had the wave eater clips on them when this happened. The valve stops were broke. I cannot understand why this damaged occurred on a ski with the clips installed??? I thought your clips were designed to protect against the pins from falling out and allowing the valve to hit the piston. If the stops are broken and allowing the valve to lesson the clearance between the piston and valve how can your clips protect against this?
Thank you for your reply.

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

ya ... I would have to agree. The wave eater clips provide a MECHANICAL STOP for the PV. So baring shaft failure the should keep the pistion safe

FL AIR

I wasn't trying to start anything about the waveeater clips. All I wanted to do is let people know that even with the clips installed there is a possibility of PV failure. I had the clips installed, and had #1 go bad. If you look at the two pictured, the one on the left is the bad one. We looked at all three and the stops on #1 are deeper than the other two.

We had inspected and aligned the PVs before the Havasu 300 so I'm not sure when the failure actually occured. This is the top of the PV, the piston etched a nice 45 degree bevel. Luckily it didn't mess up the piston and cylinder too bad.


01 GP1200R, Solas Concord 13/19, BH Sponsons, Riva Double Bar Intake, Riva Trim Tabs, Riva Ride Plate, Riva F/A, Riva D Plate w/chip, Pump Plug Kit and 38CC RPM Modified Head

HELP NOW IN SCARED OF STARTING MY 01 GP1200R after reading this , will my ski have this problem??
and what all do i change??
thax bad nerves now

and the pv sagga continues.....dont ever want to have a pv issue? weld em closed! no matter how good a valve is there is always the possibility of a failure. my reason for saying this, everything mech will fail in time. do you fly without thinking about crashing? probablitity is you wont, but there is always the possibility you could.

stop thinking about it and go ride. i know people with over 200 hours on the oem valves in 2000 and 99 model years as well as a few with 01's with over 130 hours. no failures there. its the luck of the draw my freinds.

so go use it like it was designed to be. ride on.

nothing is 100%, but thats just my opinion

hop is right. Just ride but dont take anything for granted. This type of damage can be avoided by simply checking those valves. If I had oem valves I would check them often. You will have to remove the head for a proper inspection.

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