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  1. #1

    Gpr advanced timing keyway questions

    Hey guys.

    Ive done lots of searching but havn't for the exact answers I'm looking for.

    1. With a timing advance keyway installed, will the engine idle faster? I know that with 2 stroke outboards, idle rpm can be increased by just advancing the timing.

    2. What are the downsides to installing a keyway? Do they put the motor at higher right of detonation?


    Thanks


  2. #2
    OzarkYamMonster's Avatar
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    I would like to know this also ??? Anyone got the answers ?

  3. #3
    i just advanced mine 4 degrees but i am still in the process of a rebuild the person to ask would be rich at wfo thats where i got mine you could probably pm him if he doesnt see this post

  4. #4

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    Any slight change in idle can be easily adjusted with idle speed screw. The only detonation issue would be with head that is milled/after market heads with too much compression for the gas used. Like having 150 psi compression and running 87 or 89 octane. Many guys on here have used keyways with no issues. PS: be sure to put it on the right way or you will have 3 degree retarded timing!

  5. #5
    r33pwrd's Avatar
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    Gpr advanced timing keyway questions

    I ran a 3 degree with 92 octane and riva heads.... No problems at all.

  6. #6

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    what year ski you talking about?

  7. #7
    Quote Originally Posted by chip View Post
    what year ski you talking about?
    2006 1300r

  8. #8
    99will273's Avatar
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    Quote Originally Posted by LT1GMC View Post
    Any slight change in idle can be easily adjusted with idle speed screw. The only detonation issue would be with head that is milled/after market heads with too much compression for the gas used. Like having 150 psi compression and running 87 or 89 octane. Many guys on here have used keyways with no issues. PS: be sure to put it on the right way or you will have 3 degree retarded timing!
    If you put it in the wrong way and retard the timing, you will know when running it right? Like it will run like crap with it in the wrong way?

  9. #9
    powerstroke specialist mikegp's Avatar
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    I'm running 4* key on my 07 1300r no problem.it will idle just fine

  10. #10

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    I just put in the 4* key way in mine and tried it on the weekend , big difference was well worth it . Thanks WFO

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