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  1. #1

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    Jul 2010
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    1995 waveraider with 1999 65u motor , should i change the pump to the gp1200 pump????

    Hey guys,as i posted before i just got this ski and have been doing my best to restore it, and make it fast again. Well at least 65-68 mph is what im looking for.. The ski has all the electronics from the gp1200 1999, the mph guage works but the gas doesnt and there is no beeping noise when i turn it on, that i have heard on other 1200 yamaha's. The ski has the rive billet reed spacer, not sure which reeds, it had the adapters without filters, so i bought three new filters from riva.it has the riva sponsons in the up position, and a stock cut ride plate and intake grate with the bars cut. Also it has the riva thru hull exhaust, and a full u.m.i steering system. The previous owner also had some different coil set up on one of the coils, so i replaced it and now have the ski in a state where i feel its reliable. I have taken it out five times with no problems at all with the motor, except for a slight hesitation or bog on the low end sometimes.

    Question is what pump will be better, and if i keep this one,( which ill have to for a while cause i just got laid off) which impeller should i use for my set up , i want top speed. Thanks in advance for any help, im sure mike peaver can help me out, he seems to know his stuff


  2. #2

    Join Date
    Jul 2010
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    ok so i just found out that the waveraider1100 and gp1200 97-99 used the same 155mm pump, can anyone confirm this??

  3. #3
    1131 Adam E.'s Avatar
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    Oct 2009
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    Fort Bragg, NC
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    Confirmed. Same pump.

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