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  1. 06-05-2007, 08:26 PM #1
    carl sagan
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    03 gp 1300 question

    has anyone used 87mm pistons on the gp1300? retaining the fuel injection.
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  2. 06-05-2007, 08:42 PM #2
    sleeplessnMS
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    OH YEA

    Yep! 04 gpr KPG 1390cc EFI 93 octane~ ski has been 84+
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  3. 06-05-2007, 09:24 PM #3
    carl sagan
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    thats what i want to do, where should i buy pistons and i assume i get it replated? can you help me with any other mods.
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  4. 06-05-2007, 09:30 PM #4
    IowanGPR
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    SEND YOUR R&D PLATE TO JIMS1300 NOW!!!
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  5. 06-05-2007, 09:33 PM #5
    carl sagan
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    how do i caontact him?
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  6. 06-05-2007, 09:34 PM #6
    OsideBill
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    Quote Originally Posted by IowanGPR View Post
    SEND YOUR R&D PLATE TO JIMS1300 NOW!!!

    Ditto that cheapest MPH per dollar gain by far.
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  7. 06-05-2007, 09:36 PM #7
    OsideBill
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    Quote Originally Posted by carl sagan View Post
    how do i caontact him?
    Look in the tuners section for Jims1300 thats him. He is at MudBug this week he has a note posted there for info.
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  8. 06-05-2007, 09:44 PM #8
    Flying Scotsman
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    jims

    http://www.greenhulk.net/forums/forumdisplay.php?f=106
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  9. 06-05-2007, 09:46 PM #9
    Ronn25
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    There are a few people out there with 1390cc (87mm) pistons with EFI.

    Kerry Hibdon has built some very nice running 1390 EFI ski's. Nearly all of them run an 80mph+
    You will have to get your cylinders ported for this work correctly. I don't think you can just bore, replate and put them in. The head and power valves will also need work.
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  10. 06-05-2007, 10:07 PM #10
    carl sagan
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    how do i get in touch with kerry?
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