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Type: Posts; User: Adam

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  1. Your starter maybe worn out !

    Your starter maybe worn out !
  2. Has anyone else noticed how hard it is to buy GPR...

    Has anyone else noticed how hard it is to buy GPR scoop grates and ride plates since the Covid 19 pandemic ?
  3. All the 1200’s are the same . Only the GPR’s...

    All the 1200’s are the same . Only the GPR’s changed with the 1300 engine.
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    I replaced the rectifier too and cleaned up the...

    I replaced the rectifier too and cleaned up the earth cable and ran an extra earth cable from the battery to the metal Case that holds the CDI and Ignition coils . I did this so the battery cable to...
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    Fogging does not coat the internal needle and...

    Fogging does not coat the internal needle and seat and jets with oil ! Premix does .
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    Yep ��, that’s a mess ! I haven’t seen that...

    Yep ��, that’s a mess ! I haven’t seen that before but I have seen the piston sideways in the cylinder and Conrod bent 90’ .
  7. Thread: Gpr resurrection

    by Adam
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    381

    If you have a GP1200 /1300 up 2004 you will have...

    If you have a GP1200 /1300 up 2004 you will have the 60mm hub 155mm dia pumps . Those pumps dont have the higher thrust levels available from the 75mm hub high pressure pumps . The Skat trak set back...
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    There are plenty of hulls around with no engines...

    There are plenty of hulls around with no engines , but you could fix it at a pinch .
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    Who made R&D ride plates & Scoop grates ?

    Did R&D have their own metal casting equipment or did they get an outside contractor to make them ? I believe there’s still demand for these parts that isn’t being met .
  10. Thread: Gpr resurrection

    by Adam
    Replies
    6
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    381

    Yes it’s a modified stocker , it’s good in rough...

    Yes it’s a modified stocker , it’s good in rough water .
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    You need to check your carb throttle joining rod...

    You need to check your carb throttle joining rod , sometimes they break or pop off so only 2 cylinders are getting throttle openings .
  12. Thread: Gpr resurrection

    by Adam
    Replies
    6
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    381

    Gpr resurrection

    Saved this 07 GPR hull from destruction, now with a 1200 PV engine with 38cc head , 07 exhaust system, 1200 water box , R&D 1200 grate , R&D trim tabs , 14 vane Skat trak 158mm setback pump ,85mm...
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    View Post

    I love my GP1200r/ 1300r skis I have 3 of them and an XLT 1200 . I am seeing a lot of skis being blown up from negligence and parted out , how many did Yamaha make world wide ? I see wreckers in...
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    The GP1300R has the 75mm hub too ,what size...

    The GP1300R has the 75mm hub too ,what size bearings does it use ? You will need a 1300 impeller with a 75mm hub if you use the 20mm driveshaft with the 8 vane stator.
  15. As Mudslanger said , its a money pit for the...

    As Mudslanger said , its a money pit for the inexperienced . Parts are getting hard to find , R&D made the best intake grates and Rideplates for the GPR and they retired from the business making R&D...
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    The problem with oil injection is the carbs never...

    The problem with oil injection is the carbs never get a protective coating of oil that stops corrosion in the carbs if you leave the ski sit for winter .
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    Make sure you flush out the middle crankcase with...

    Make sure you flush out the middle crankcase with solvent and rag then blow it out with compressed air ,have good look for any damage. It’s been my experience you can get luck and have not crank...
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    Have you checked the deck height of all three...

    Have you checked the deck height of all three cylinders ? When you say "you get water in 1& 2 cylinders " how much ? And how is it manifesting ?
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    Sounds like one cylinder has lost compression.

    Sounds like one cylinder has lost compression.
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    625

    Have you machined the head ?

    Have you machined the head ?
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    I have a 14 vane 158mm setback Skat trak pump and...

    I have a 14 vane 158mm setback Skat trak pump and an 07 75mm hub high pressure oem pumps.
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    I have both parts too ,I just measured them both...

    I have both parts too ,I just measured them both and I was incorrect! The 05 pipe is different in both the joint pipe and the stinger diameter on item 25 ! The early pipes were 69.54mm dia and the 05...
  23. Aftermarket 1200 grate ,the 800 grate is faster...

    Aftermarket 1200 grate ,the 800 grate is faster and is curved on the rear scoop edge.
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    Do you have any photos of the plate and grate it...

    Do you have any photos of the plate and grate it has currently ?
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    Item 25 wasn’t changed ,it’s item 16 that was...

    Item 25 wasn’t changed ,it’s item 16 that was updated in 2005 from the 03/04 models . The 1200 pipes are the same as the 03/04 pipes . Hope this helps , the photos I posted are the “joint pipe “ item...
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