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Type: Posts; User: williamsburgjim; Keyword(s):

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  1. Replies
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    Re: TC-W 3 or Motorcycle 2 stroke oil?

    I believe the 2W is semi-synthetic whereas the R is fully synthetic. The only other thought I would have is whether or not it has additives and viscosity. Using the amsoil analogy - since I know that...
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    4,673

    Re: TC-W 3 or Motorcycle 2 stroke oil?

    Generally speaking, one of the many main distinctions between 2-stroke oil applications are the additives. For instance, what's important is at what temperature the dispersants work. Air cooled...
  3. Replies
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    3,084

    Re: b-pipe for a gp760 or 800

    Test results were positive! Definitely more acceleration compared to the Concord. Out of curiosity, I have a donor gp800 ski and to my surprise pulled out of it a super camber X prop: yb sc xo 15.5...
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    Re: b-pipe for a gp760 or 800

    ...got the Hooker 10/16 and hope to do some testing this weekend. Thanks. I've already T'd my rear cylinder. There's actually not much 'OEM' water that goes into that pipe compared to the...
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    Re: b-pipe for a gp760 or 800

    lamar311,

    I hadn't heard from you...but appreciate your thoughts as it inspired me to go ahead and order a Impros Hooker 10/16. I'll let you know how it works. (I couldn't decide between 9/15...
  6. Replies
    18
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    3,084

    Re: b-pipe for a gp760 or 800

    PM sent
  7. Replies
    0
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    398

    Prop-down and raise rev limit

    ....anyone run that combo (in any ski)?
  8. Replies
    18
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    3,084

    Re: b-pipe for a gp760 or 800

    Thank you kindly for all the advice. I will ponder...for sure... . It's the smaller pump for sure, at least compared to say the gpr. I'll shoot you a PM. I may want to bore the pump and would...
  9. Replies
    18
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    3,084

    Re: b-pipe for a gp760 or 800

    Apparently you can't just use the FPP exhaust mani ----> b-headpipe---->oem chamber is that correct? I was mainly looking for more bottom end and thought with the ability of adding/subtracting water...
  10. Replies
    18
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    3,084

    Re: b-pipe for a gp760 or 800

    Thanks, I will check it. BTW, for clarification, I'm primarily interested in the b HEADPIPE only. Any performance gains with just the header pipe?
  11. Replies
    18
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    3,084

    Re: b-pipe for a gp760 or 800

    Thanks. Would you be so kind to point me in the direction of the blaster chamber...link or pic maybe? I realize there are so many different versions...limited, wet, dry, etc... . I do know that the...
  12. Replies
    18
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    3,084

    Re: b-pipe for a gp760 or 800

    Thank you kindly for the reply! That's cool...and I see that Blowison I think still has them... . One quick newb question, can I use the stock 760 mani with the pipe?
  13. Replies
    18
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    3,084

    b-pipe for a gp760 or 800

    I'm new to the stand-up b-pipe world but primarily do wave jumping with my skiis, and so most of them are tuned for bottom-end. Does Factory Pipe still make the b-pipe/new? Has anyone tried one on a...
  14. Replies
    13
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    4,179

    Re: gpr1200 motor swap to 1200 non pv

    ....only bummer is the horse power rating. Gosh, an 800 is 120 hp... but of course you can tweak the 1100 for sure....plus you don't have to mess with PV's.
  15. Replies
    11
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    2,064

    Re: low compression

    ...yeah lean indeed. It seems if it's low-oil/fuel it will just lock-up pretty quick where if it's a lean fuel/air ratio it will still run but slowly wear out, and then ultimately fail at some point....
  16. Replies
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    Re: low compression

    ...the cylinder looks surprisingly good from what I can tell in the pic. One rule of thumb is that if there are small amounts of aluminium melted onto the nic cyl.then usually you can use emory cloth...
  17. Replies
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    683

    Re: 2005 Yamaha GP800r

    ...I could stand corrected here... the GP series hull has optional motor mounts, but the GPR series hulls do not. Other than that issue it should be a direct swap.
  18. Replies
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    4,179

    Re: gpr1200 motor swap to 1200 non pv

    ...awesome project...subscribed! Are you just having to switch-out the CDI/electronic's, that's it?
  19. Replies
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    Re: Gp1300r has no power

    ....sometimes the cat will break loose from the housing and migrate toward the stinger/waterbox section and rob power. The D-plate will of course solve that... . Also, I believe you won't need the...
  20. Replies
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    Re: Yamaha twins v. triples

    Thank you kindly Harry! This must be in-part why at low R's there is blubbering on a triple v. a twin...(?).
  21. Replies
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    Yamaha twins v. triples

    Harry,

    First I'd like to extend my appreciation to you and your company for all that you do, including the wonderful data posted here and on your website! Your replies to my previous 760bb...
  22. Replies
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    Re: Same year GP 760 vs GP 800

    Yes, the same.
  23. Replies
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    Re: gp760 big bore

    Harry,

    What's involved with doing the 927 big bore? Is it just new cylinders and pistons or are there electronics and carbs to deal with...(?)

    Thanks
  24. Re: Single exhaust system for a 3 cylinder two stroke

    ...good question! Subscribed!
  25. Replies
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    Re: Supercross

    ....wasn't the best track...but I'm happy for Milsaps. BTW what happened to Bubba's speed? He's been off the pace for quite awhile now....
  26. Replies
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    5,094

    Re: gp760 big bore

    Was that an gpr800 case? The reason I'm asking is that if a 800 case works for the Group K big bore cylinder kit, there would be no need to bore the 760 cases right(?). Edit: I'm trying to avoid...
  27. Re: 61X Case / 62T Bored to 760 / 64X Head

    ....don't forget adding carbon fiber LT reeds to help with bottom/midrange snap.
  28. Replies
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    Re: Premixed fuel

    Brad, one other advantage worth mentioning is the ability to lean/richen your air fuel mixture. You do this by varying your oil/gas ratio which affectively changes your fuel/air ratio, accordingly. ...
  29. Replies
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    Re: WHO is still riding? wetsuits or NOT?

    +1. Needed an ocean/wavejumping fix. Ambiet air was 60/sunny....spring suit with boots/jetribe socks, heavy lycra top, neoprene gloves. Just what the doctor ordered!
  30. Re: 61X Case / 62T Bored to 760 / 64X Head

    ...correct me if I'm wrong Harry, but generally speaking it's my understanding that except for the B pipe, FPP are designed and tuned for more mid and top (?). And if that is correct, maybe timing...
  31. Replies
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    Re: gp760 big bore

    Harry,

    Thank you kindly for your reply. As a brief follow-up question, if I do this, are there any other changes required to say, timing/cdi, carbs, etc.? My thinking is that if there are just...
  32. Replies
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    launching during the offseason

    I have the VB law (PDF) from the police dept. that outlines when you can ride on the shore during the offseason, but it does not say whether you can also either beach your ski and/or launch it with a...
  33. Re: Gun Rights, 2nd Amendment In Total Jeopardy. See Video.

    Using that logic, that would mean the extremist or far-right could support a law, in say 2040, that would include Tank ownership. Wait I stand corrected, probably missles and nuke weapons might be...
  34. Re: Gun Rights, 2nd Amendment In Total Jeopardy. See Video.

    ...being a Moderate, I don't understand the extremist view. For instance the 'slippery slope argument' would be like saying because now that the government is engaging in airport security checks,...
  35. Replies
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    Re: 760 jetworks question

    ttt
  36. Replies
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    gp760 big bore

    Harry,

    I have a mint gp760 with low hours and am considering doing a big bore. Is this doable and/or do you have a kit for this?

    Thank you kindly.
  37. Replies
    2
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    687

    Re: 760 jetworks question

    Anybody?
  38. Replies
    2
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    687

    760 jetworks question

    On my modded gp760 I've got; rear cylinder head water outlet hose--->"T" fitting-->water restrictor --->pisser overboard. I've done this with my other GPR's with much success. However, wouldn't...
  39. Replies
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    gp760 carb t-handles

    Anyone know whether thay make t-handles for gp760 carbs? I know they do for the GPR series, but am not sure... .
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