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  1. #1

    Join Date
    Mar 2006
    Location
    Baton Rouge, LA
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    26

    just purchased gp1200r

    i just purchased a 2001 gp1200r (stock). i was wondering what performance parts I should do first. I am thinking about doing the pump seal kit and d-plate first. just wanted to get a second opinion from the more experienced tuners. i am geting a little bit of what seems to be prop spin when I go full throttle from idle. will the pump seal kit most likely fix this? also, can anyone tell me the difficulty level of installing the d-plate and cat temp sensor chip? thanks


  2. #2

    Join Date
    Nov 2005
    Location
    Lafayette, La.
    Posts
    637
    I won't recommend what to buy but I will recommend that you buy your stuff from Jerry http://www.4-tecperformance.com/ he will save you money and his turn around is good and there is no BS involved.
    BTW, Jerry is the one who owns this site and every lil bit helps him out.

  3. #3
    subarupartsdude's Avatar
    Join Date
    Jun 2006
    Location
    Norfolk,Va
    Posts
    591

    1200r

    I agree with ellie one hundred percent about the parts.I have ordered several parts from him and the turn around time is excellent.I live in va beach virginia and received parts in no time.Oh yeah by the way when you do order parts don't forget about the coupon code.

  4. #4
    Moderator RX951's Avatar
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    Apr 2005
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    League City, Texas
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    Mods and things to do first

    First of All, Welcome to the Forum

    There is alot of experience and help on this forum.
    Utilize your resources and be courteous


    I would do:

    ~Invest in a good compression guage and do a Compression Check and get a baseline of your motor.
    ~Seal Pump Shoe properly with PPK and Marine 4200/5200
    ~Jetworks Mod
    ~D-Plate
    ~VF3 Reeds
    ~Jims Ride Plate
    ~Mill cylinderhead slightly 140-150 psi
    ~Check Wear ring clearance, Install new wear ring is clearance is too big
    ~Solas Impeller w/box stock 14/20 with the mods listed above
    ~If you plan to switch to the new 05 pump which produces more speed, you will need to purchase a Solas Dynafly impeller. Jerry has those in his online store.
    ~Seal bolt holes
    ~Go Premix if there are alot of hours on that motor.
    ~Premixing is more reliable too.
    ~Buy an aftermarket Digital Tachometer (Pet-2100 or Tiny Tach). The factory bar graph tach is not accurate.
    ~Purchase a GPS unit for accurate speed indication. The factory speedometer is not accurate. Buy one such as a Garmin; Forunner,E-Trex,Foretrex ect...

    You can do a search on pretty much anything you need on this forum or look under the FAQ How-To section. Or just ask.

    D-Plate installation
    http://www.rivayamaha.com/Instructions/ry1819.pdf

    Proper Pump Shoe sealing
    http://www.hydrotoys.com/gpr/tuners/...Sealing%20.pdf

    And as Ellie mentioned, order your parts from
    http://www.4-tecperformance.com/

    How-To FAQ section for several modifications for the GPR
    http://www.greenhulk.net/yamaha/viewforum.php?f=14

    You also need to do the Jetworks Modification. There is an updated version of this mod. Get with Fercho on it
    http://www.hydrotoys.com/gpr/tuners/...%20Control.pdf

    You will also need this Service Manual for your GP1200R.
    It will come in very handy !
    http://www.ramnj.com/GP1200R.pdf

    Get with Member Ramnj, he is parting his GP1200R out.
    http://www.greenhulk.net/yamaha/view...t=1749&start=0

  5. #5
    ABBOTT's Avatar
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    Jul 2005
    Location
    Birmingham, AL / Lay Lake
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    What RX said. ^^

    Great starting place. Welcome to the board.

  6. #6

    Join Date
    Mar 2006
    Location
    Baton Rouge, LA
    Posts
    26
    Thanks for the welcome and comments guys. I look forward to discussing with you all in the future.

  7. #7
    Moderator RX951's Avatar
    Join Date
    Apr 2005
    Location
    League City, Texas
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    Here are some more links that will help you out .
    Yes, you have a member name similar to another Philip

    Philip_GPR - How to build a (very) fast ski! http://rivaforums.com/eve/ubb.x/a/tp...4/m/9511019071

    Hydrotoys - all sorts of stuff! http://www.hydrotoys.com/gpr/

    CajunDude - GP1200R Manual & Info http://www.cajundude.com/jetskihome.htm

    GPR Tuners Page by Hydrotoys http://www.hydrotoys.com/gpr/tuners/

    Fercho - [email protected] / 713-875-1812

    Performance PWC
    Business # (727) 786-1177
    Cell # (727) 365-5132

    WATERCRAFT PERFORMANCE
    (516) 883-0090
    www.ISLANDRACING.net

  8. #8

    Join Date
    Apr 2006
    Location
    Charleston, Sc
    Posts
    54
    +1
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    Three things you need to think about are:
    *how much faster than a stock ski you wanna go.
    *how much you've budgeted for mods - be realistic, the sky's the limit.
    *what water conditions you want the ski to perform best (ocean,rough,flat water)

    By deciding these things you can get much better and focused advice. and you can save allot of money buying the correct parts for your performance goal. Believe me almost everyone here has purchased stuff they regretted, not because it was a bad part, but because it was the wrong part.

    First I'd address reliability items:

    * D-plate - there a three types to choose from.
    * cat sensor- a 1k-Ohn resistor from radio shack is cheap (part271-111
    * wave eater clips to protect your power valves.
    * seal pump- PPK kit and 4200/5200 or skip PPK and just use sealant to fill voids. make sure your clear on how to do it to avoid problems.
    * Like RX951 said, check compression and condition of wear ring.
    * get a service manual and go through maintenance checklist- a good investment of time with a used ski. A few of the members have been kind enough to post the manual on their web sites or you can get a copy cheap off ebay.

    Welcome to the Madness.
    Ken

  9. #9

    Join Date
    Apr 2006
    Location
    Charleston, Sc
    Posts
    54
    +1
    1
    O yeah,
    yes sealing the pump will help with the "spinning-out" feeling. a tight wear ring and a prop in good condition helps too. You might also check the condition of the fixed stator fins because damage to them can also hurt hook up.

    Replacing the cat sensor is easy. just plug in an after market "sensor delete" chip, or soder the radio shack resistor in place of the sensor.
    Replacing the cat with a d-plate is straight foreward providing your comfortable working with tools. you will need a spray sealant if you re-use the cat gaskets, and must use a thread locker (loctite) when you bolt the stinger back together and install it. A torque wrench will also be needed to make sure the bolts are tightened to spec.

  10. #10
    Do the list that RX posted plus the waveaters on the powervalves. I would do the 05' pump with the dynafly 14/20 right off the bat and eliminate a lot of problems right away, you're going to need a prop anyway.

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