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  1. #1
    BLACKandSILVER06GPR's Avatar
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    Impeller suggestions for a 06 gp1300r

    Hi guys. Been doing some work to my ski this winter and was wondering what impeller would be best for my ski. I've been looking at the Solas 13/19 and the 14/20 but was afraid the 14/20 might be to much for the ski to turn since the head is not machined. Let me know what you think of these impellers or have any other opinions. Here's my current set up:

    2006 Yamaha GP1300R
    Riva Free Flow Exhaust
    D-Plate
    Pump Stuffer Kit
    Island Racing Hole Shot Kit
    Riva Power Filter
    R&D Power Plenum Flame Arrestor
    R&D Modded Ride Plate
    Riva Trim Tabs
    Pro-Tec Intake Grate

    Thinking about getting my ECU flashed by R&D and also possibly picking up an EFI Controller

    I live on Long Island and do most if not all my riding on the south shore in the bay.

    Thanks for all your help!


  2. #2
    powerstroke specialist mikegp's Avatar
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    actually the free flow will slow you down. i will go with a true 13/19 from impross or someone who can pitch the prop properly.
    if you increase comp then 14/21 ,again from some one good on props.
    also how many flame arrestors are you installing?lol
    Riva or r&d ?

  3. #3
    powerstroke specialist mikegp's Avatar
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    i don't know about the re flash from r&d , but a 4* key way will work just fine.
    I've got a Riva efi controller and 4* key if you decide to go that route.its the old style efi cont, the good one.

  4. #4
    BLACKandSILVER06GPR's Avatar
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    Haha whoops on the flame arrestors. I just picked up a riva but it was on my parts list as a riva or r&d . But yeah I heard that the free flow does take off the top end but gives alittle to the bottom end and gives it a different sound to the exhaust. I figured I'd play around with it. My buddy has the Reflashing in his ski which was pale riders old gp1300 which he bought it from and heard good things about it unless I'm wrong? I'm still new with some of this. But what exactly is a 4* key I've never heard of it before.

  5. #5
    powerstroke specialist mikegp's Avatar
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    it goes between the flywheel and the crankshaft it will advance your timing 3,4,5* it will give you more punch and better overall response.
    on the free flow it will make the ski so loud you would not hear the person sitting behind you.

  6. #6
    BLACKandSILVER06GPR's Avatar
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    True worst comes to worse ill out the stock exhaust in. I got it in a package deal. Right now I'm looking just to do bolt on mods. Don't really want to start digging into the motor. Just want to keep it as reliable as I can. So basically your saying a 13/19 prop is the way to go unless I start increasing the compression/timing? Also I've read that the efi controller is not needed for some of the mods for my ski but would help. Would you think it's worth the $300 for one? How much for you sell yours for?

  7. #7
    "just sayin".. jetdave56's Avatar
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    The bolt ons you got on are fine if you're gonna stay stock...you'll get a little more top speed with the 14/20, but might lose a little out of the hole...but what type of RPMs are you turning on a digital tach?...and what GPS speed you hit so far...I did the reflash..accel was stronger and 5000-6000 rpm range stayed strong...the accel and fuel curve is much improved with a reflash...worth the money...

  8. #8
    BLACKandSILVER06GPR's Avatar
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    I figured with the 14/20 that I might be able to pull it.. But was hesitant to get it. I know I'll lose some out of the hole but I figured the hole shot kit could help with that and possibly the Reflashing. Also the 2006 GPRs have a H.O. Pump and figured that could help with the 14/20.. To be honest with you I've been piecing this all together this winter as a winter project and it has been way to cold to get out there. It's been below freezing the past two weeks. I do have a tiny tach set up on the ski ready to go. I know those reading could be the decision point to whether or not the 14/20 prop will be right

  9. #9
    powerstroke specialist mikegp's Avatar
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    i don't agree on the 14/20. it will not pull it , your rpms will be on the 6k range.but do some more research.
    i will sell you mine for 180 ship. its the old style with the four dials, not the new p.o.s , but as far as i know you will not need this until you raise compression.

  10. #10

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    i have a 87mm nozzle if you need one, thats what everyone did on the 03 an 04 powervalve motors and a solas and it works well with the non power valve motor with a dynafly

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