Results 1 to 4 of 4
  1. #1

    Join Date
    Feb 2011
    Middleburg, FL.

    99 GP1200 build NEED YOUR HELP!!!

    Just wanted some feedback on what kind of upgrades you guys recommend on this ski. It's having the top repainted right now I'll post some pics soon.

  2. #2
    Yamaha artisan Cutlass's Avatar
    Join Date
    Oct 2010
    Madison, WI, USA
    gp1200 65U mods
    Ride plate
    Intake Grate
    Flame Arrestors
    high compression head
    XO impeller

  3. #3
    Budman's Avatar
    Join Date
    Jul 2008
    Don;t forget the Pro-tec trim tabs:
    Click here 2002

  4. #4
    Mongoose's Avatar
    Join Date
    Aug 2005
    AS Cutlass said, +
    Tee the cooling line going to front of head and send it to a pisser-good for about 50rpm's.
    Can't find/afford a aftermarket head-just get the stocker skimmed by 60 thou.
    Go premix.
    97-mid 98 have zero degree exit nozzle, mid 98-99 have 5 degree-it's faster!
    Riva made 2 plates for these skis-the Riva RY21017RF is the good one.-Riva RY21016RF is rubbish! Id go with the Bullett racing cf one if you ever find one!
    Best intake R&D then Riva, Pro-tec. If you get the Pro-tec one, a good mod is to cut the outside wings.
    Stick a 120 main jet in the carb return line to increase carb fuel pressure.
    Unlike the gpr-no need to rejet when you fit f/a's to the engine, just open the highs out a quarter and tune from there.
    Just reading my old notes here, and im seriously wondering why I sold mine!

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Got all my parts, The Build Begins :) (first build)
    By HallPass in forum Yamaha Projects & Build Threads
    Replies: 1299
    Last Post: 06-26-2010, 03:12 AM
  2. 03 1300r build
    By vomitspot in forum Yamaha PWC Performance (2-stroke)
    Replies: 19
    Last Post: 03-30-2010, 04:07 PM
  3. My GP1200 65U build-up
    By Metal4130 in forum Yamaha Old School Skis
    Replies: 49
    Last Post: 09-23-2009, 12:00 PM
  4. Installing WaveEater Clips on 2001 GP1200...Oil build up in PV Normal?
    By stepjl in forum Yamaha PWC Performance (2-stroke)
    Replies: 11
    Last Post: 09-20-2007, 10:04 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts