Results 1 to 3 of 3
  1. #1
    Old Ski Insanity w/rpm500's Avatar
    Join Date
    Aug 2005
    Crystal River Fl

    keyway useage question!!

    As you all know I like to integrate the latest pieces into useage on the GP and the WR's.
    Can a offset key work on the early 1200,a 760 or the 500?
    Does anyone know of one having been used ? Is it a different style key from the gpr?
    ALSO!! any info on added heat these may produce in the engine?
    How about offsetting the pickups inside, oval out the mounting bosses , and reset them?
    .. sounds like its use might be a good test anyway
    Last edited by w/rpm500; 08-04-2006 at 02:32 PM.

  2. #2
    ....back from the dead.... J-ME's Avatar
    Join Date
    Aug 2005
    Yes it will work, but I don't think it is the same size as the GPR.

    You will pick up power from it, but of course more advance = more heat and octane requirements.

    I would stick with a 3 degree if you can find one and run pump premium.

    I would stay away from slotting the exciter pickups as it is tough to correlate movement with affected advance.
    Last edited by J-ME; 08-06-2006 at 10:28 AM.

  3. #3

    Join Date
    Jan 2006
    I thought of moving the sensors but on the 1300 they have a recess to position them correctly and this would have to be trashed to slot the pickups.

    The amount to move them is easy to calculate, just run a tape measure round the flywheel to measure the circumference divide this by 360 and then the result is how far to move the pickups per degree of advance.

    The one advantage I can see of this is that you could advance the rear cylinder by say 2 degrees and the rest by 3.

Thread Information

Users Browsing this Thread

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

Similar Threads

  1. Gpr advanced timing keyway questions
    By twofiftyeight in forum Yamaha PWC Performance (2-stroke)
    Replies: 16
    Last Post: 01-23-2013, 05:33 PM
  2. keyway question
    By vomitspot in forum Yamaha PWC Performance (2-stroke)
    Replies: 14
    Last Post: 03-29-2010, 10:38 AM
  3. Keyway Install: In Hull Question
    By Chrisrokc in forum Yamaha PWC Performance (2-stroke)
    Replies: 29
    Last Post: 05-25-2009, 07:37 PM
  4. gp1200r running poorly. stock keyway question
    By spyder3000gtvr4 in forum Yamaha Open Discussion
    Replies: 35
    Last Post: 07-01-2008, 05:05 PM
  5. keyway and impeller questions for gp1300r
    By alex29573 in forum Yamaha PWC Performance (2-stroke)
    Replies: 15
    Last Post: 05-23-2008, 10:13 AM

Posting Permissions

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