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  1. #1
    nunnink23's Avatar
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    just got a gp1200r would like to know some things

    Hey i just got a 2001 gp1200r with 157 hours on it, and i would like to know a few things, first i hear alot about these wave eater power valve clips, what are these and what does it entail to install them? Second, to do a topend rebuild do i need to pull the motor? because it has 115 psi in all 3 cylinders and i was told this might be time for a rebuild soon. and last, im sort of thinking my powervalves have issues because i hear the servo cycle but i dont see the actual wheel move the powervalve?


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  3. #3
    120 is normal range for the compression. It does vary with each guage but if they are all the same i think your ok. It would be a good idea to do a top end just because of the time it does have. Yes it can be done while in the boat. The exhaust has to be taken out.

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    Moderator beerdart's Avatar
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    Welcome to the Hulk..

    Does the wheel for the PV's rotate?

  5. #5
    steach's Avatar
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    If it was me...1-pull the pipe and look for the cat conv (it can be in the water box). 2-rebuild the carbs and check the oil lines and raves. 3-replace spark plugs and RIDE.

  6. #6
    nunnink23's Avatar
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    yeah id rather not drop the money into a top end this year if i can avoid it, but what i would like to know is, how do i know those powervalve motors are working correctly and opening all the way? By the way when i remove the exhaust, i dont need to pull the manifold right? just seperate it at the split in the pipe?

  7. #7
    nunnink23's Avatar
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    Quote Originally Posted by steach View Post
    If it was me...1-pull the pipe and look for the cat conv (it can be in the water box). 2-rebuild the carbs and check the oil lines and raves. 3-replace spark plugs and RIDE.
    what is to check with the oil lines? what do you mean by check them i mean?

  8. #8
    Hybrid AWD's Avatar
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    Quote Originally Posted by nunnink23 View Post
    what is to check with the oil lines? what do you mean by check them i mean?
    Basically:

    • Make sure there are no cracks
    • Make sure they are in good condition
    • Be sure the are securely installed
    • Make sure they aren't going to come off
    If you don't you will have 2 problems. The first being most likely a siezed motor and the 2nd will be a hull full of nasty oil

  9. #9
    nunnink23's Avatar
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    right, gotcha. sorry this is a totally new animal to me, i know my m3's motor inside and out but thats a 4stroke obviously, i dont have a huge knowladge of troubleshooting 2 strokes, or oil injection. but thankfully i pulled the carbs and i think thats the problem, i checked out the oil lines as well. the only thing i think can still be a problem is that power valve servo, im not going to mess with it, ill take it out on the water first after a carb rebuild and see if its good.

  10. #10
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    Quote Originally Posted by Hybrid AWD View Post
    Basically:

    • Make sure there are no cracks
    • Make sure they are in good condition
    • Be sure the are securely installed
    • Make sure they aren't going to come off
    If you don't you will have 2 problems. The first being most likely a siezed motor and the 2nd will be a hull full of nasty oil

    x2!!
    the sheath that covers the oil lines does not shrink. the oil lines do shrink. make sure they are not pulled tight and do have a bit of slck in them. compression looks o.k.
    the power valves might be sticking. if someone used a different oil or a cheap oil, they tend to get gummed up and stick.

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