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Thread: 03 gp 1300 question
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06-05-2007, 08:26 PM #1
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03 gp 1300 question
has anyone used 87mm pistons on the gp1300? retaining the fuel injection.
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06-05-2007, 08:42 PM #2
OH YEA
Yep! 04 gpr KPG 1390cc EFI 93 octane~ ski has been 84+
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06-05-2007, 09:24 PM #3
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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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06-05-2007, 09:30 PM #4
SEND YOUR R&D PLATE TO JIMS1300 NOW!!!
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06-05-2007, 09:33 PM #5
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how do i caontact him?
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06-05-2007, 09:34 PM #6
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06-05-2007, 09:36 PM #7
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06-05-2007, 09:44 PM #8
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06-05-2007, 09:46 PM #9
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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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06-05-2007, 10:07 PM #10
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how do i get in touch with kerry?
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Thanks for the reply. I figured it was probably a cracked head. I mean...
Is this water in oil from a...