Page 1 of 2 1 2 LastLast
Results 1 to 10 of 13
  1. #1
    JKR1300's Avatar
    Join Date
    Jan 2006
    Location
    St Louis & 6mm LotO
    Posts
    497
    +1
    6

    Timing Key / Idle Speed

    Anybody with a timing key notice a difference in idle RPM? Before I installed the 3 degree key, my idle R's were always B/T spec limit of 1250 + 200.
    Now I'm idling around 1050 +/- 50. I also notice that the engine doesn't always start as easily as it used to. It seems I need to hold the start button down longer. Before you just has to touch it briefly for the engine to start.


  2. #2
    Happily Self-Employed WFO's Avatar
    Join Date
    Nov 2005
    Location
    Houston, Texas
    Posts
    12,800
    +1
    449
    Quote Originally Posted by JKR1300 View Post
    Anybody with a timing key notice a difference in idle RPM? Before I installed the 3 degree key, my idle R's were always B/T spec limit of 1250 + 200.
    Now I'm idling around 1050 +/- 50. I also notice that the engine doesn't always start as easily as it used to. It seems I need to hold the start button down longer. Before you just has to touch it briefly for the engine to start.
    Where is you #1 pot set ?

  3. #3
    It sims lack of air

    Dont bother to change #1

  4. #4
    JKR1300's Avatar
    Join Date
    Jan 2006
    Location
    St Louis & 6mm LotO
    Posts
    497
    +1
    6
    My #1 pot is set at 8.
    Lack of air?? I have the race filter - not much I can do there

  5. #5
    Happily Self-Employed WFO's Avatar
    Join Date
    Nov 2005
    Location
    Houston, Texas
    Posts
    12,800
    +1
    449
    Quote Originally Posted by JKR1300 View Post
    My #1 pot is set at 8.
    Lack of air?? I have the race filter - not much I can do there
    My ported boat is on 5 on #1. The idle speed usually goes up a touch with the key install.

    Hows the overall performance other than that ?

  6. #6
    Mr Bill's Avatar
    Join Date
    Aug 2005
    Location
    Macon Georgia
    Posts
    451
    With a 3 degree ignition advance it will be a tad harder to start...

  7. #7
    JKR1300's Avatar
    Join Date
    Jan 2006
    Location
    St Louis & 6mm LotO
    Posts
    497
    +1
    6
    Hows the overall performance other than that ?

    Boat runs really good. Great acceleration - High of 78 on GPS.
    Runs 76 all day

  8. #8
    People

    we are getting ready to go for porting for 2 GP1300r 2005 and 6

    and if we lower #1 the RPM goes UP that mean beter air fuel ratio

    try to remove the seat and see how the engine is respodnding to that i think will go up but again dont lower any settings ( DONT PLAY WITH THAT)

  9. #9
    Hydrotherapy's Avatar
    Join Date
    Sep 2006
    Location
    The Rock
    Posts
    3,347
    +1
    17
    MMMMMM...

  10. #10
    SpeedJunky's Avatar
    Join Date
    Dec 2005
    Location
    Michigan
    Posts
    1,118
    +1
    35
    I noticed the same, lower idle now that I installed the 3 degree key on both my boats. With the key, idle is 1020rpm.
    #1 pot is currently 8 but needs to come down a bit still.

Page 1 of 2 1 2 LastLast

Thread Information

Users Browsing this Thread

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

Similar Threads

  1. Is there anywhere else to get the timing key from?
    By Mongoose in forum Yamaha PWC Performance (2-stroke)
    Replies: 26
    Last Post: 11-01-2007, 10:59 PM
  2. idle speed
    By xplayer2885 in forum Polaris Open Discussion
    Replies: 3
    Last Post: 05-06-2007, 10:10 PM
  3. 1300 Timing Key Question - Urgent
    By Islandgirl in forum Yamaha Open Discussion
    Replies: 5
    Last Post: 01-12-2007, 09:21 AM
  4. Advice on timing key
    By Dickdastardly in forum Yamaha PWC Performance (2-stroke)
    Replies: 10
    Last Post: 11-03-2006, 11:35 AM
  5. fast idle speeds
    By wakeborder556 in forum 4-Tec Performance
    Replies: 11
    Last Post: 04-16-2006, 11:47 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
  •