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  1. Replies
    22
    Views
    940

    Re: Mikuni TMX triple?

    It's definitely true that spilled fuel is more likely with the float carbs, ruin ther vents up outside of the hull and they won't dump fuel in the bilge, but if you tip the ski upside down it will...
  2. Replies
    22
    Views
    940

    Re: Mikuni TMX triple?

    800 twins are common and they vibrate more than triples, and 1200 triples are not unheard of. You have a point about vibration just above idle though, with the cvt snowmobile motors basically never...
  3. Replies
    22
    Views
    940

    Re: Mikuni TMX triple?

    I don't understand why a pwc motor would shake more than a snowmobile motor. Snowmobiles typically run higher rpms, but the motors are very similar and in some instances share parts. I also don't see...
  4. Replies
    22
    Views
    940

    Re: Mikuni TMX triple?

    Sleds use external fuel pump and small float needle/ seat sizes.
  5. Replies
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    940

    Re: Mikuni TMX triple?

    Snowmobiles run float carbs in rubber mounted triples, seem to too okay. The snowmobile motors are oriented differently relative to cornering forces, not sure if that matters, but they get...
  6. Replies
    9
    Views
    2,815

    Re: limited b pipes

    https://www.youtube.com/watch?v=WGjf3ZPOpwg&t=118s&ab_channel=FactoryPipe

    Most of the stuff in this video is recognizable as Polaris or Indian oem parts, I did catch a glimpse of a b pipe header...
  7. Re: Waterboxes: Do they create noise or performance?

    Yes exactly that, go to the Ripper episode and the Goatcher 2 episode plays.

    The whole thing worked though I clicked and ended up listening to a few of them, cool podcast.
  8. Re: Waterboxes: Do they create noise or performance?

    Looks like they have the Harry Goatcher part two doubled up over the Larry Ripper pod.
  9. Replies
    16
    Views
    1,433

    Re: Mikuni SBN Hi Speed circuit question

    I'm doubtful of pretty much all of this.

    opening the throttle blade reduces the air velocity, if anything it will reduce signal. This is the reason why big carbs are harder to keep tuned than...
  10. Replies
    3
    Views
    481

    Re: Dual Walbros on a 550?

    The empty hole with the H is where they sometimes put the high speed screw on other models of Walbro carb, so it's nothing on yours. The fuel in is on the bottom of the square pump stack capped off...
  11. Replies
    3
    Views
    481

    Re: Dual Walbros on a 550?

    I've never run a Walbro on a watercraft but I am one of the wierdos who runs one on a vintage snowmobile (and even among vintage snowmobile people Walbros are considered throw away and replace with a...
  12. Replies
    13
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    10,731

    Re: What are these tubbie things?

    Did it have a Walbro?
  13. Replies
    13
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    10,731

    Re: What are these tubbie things?

    Basically when walbro carbs and points ignition went away the whole world went wrong.
  14. Replies
    16
    Views
    1,433

    Re: Mikuni SBN Hi Speed circuit question

    The carb does not care if you have a smaller high jet with the screw further out or larger high jet with screw further in, if the total fuel flow is the same it makes no difference. Most people shoot...
  15. Replies
    1
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    683

    Re: Kawasaki 300SX Questions???

    440 impeller fits, I would say it's about the same level of difficulty as any other impeller change, comparable to a 650 because there is a lot of silicon to clean and re-apply which is not a lot of...
  16. Replies
    16
    Views
    2,772

    Re: Tnt performance pipes vs all fraud copies

    My speculation, they probably didn't make any money.

    I think it's harder to make any money selling this sort of thing than people think it is.

    Pure speculation on my part though.
  17. Replies
    297
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    39,030

    Re: My X-2 Gen2 build

    Email him back and ask if he accidently added an extra zero.

    The last three I bought were PDCIS-02T, 160 EU each for the "Kawasaki" version that came with a pigtail and 175 for Yamaha version...
  18. Replies
    297
    Views
    39,030

    Re: My X-2 Gen2 build

    A zeeltronic is definitely nowhere near $2000. Somewhere between 200 and 300 dollars straight from Borut depending on exchange rate to euros or if you buy it from one of the us sellers they'll tack a...
  19. Re: New Aftermarket X2 Expansion Chamber that uses stock headpipe

    From the sound of it they might not even have a functioning tachometer!
  20. Re: kawi 650 / 750 exhaust manifold / downpipe??

    I don't know what you're up to but you have my attention, please post pics of the project.
  21. Replies
    0
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    238

    Wanted: half girdle superjet pro-tec

    Looking for a half girdle, the type that adds a girdle to a stock head.

    Pro Tec made them, I'm not sure if anybody else did (I think maybe GroupK made them after Pro Tec stopped?)
  22. Replies
    297
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    39,030

    Re: My X-2 Gen2 build

    Another way to say it is that those mechanical avance things that move the pickup are a way to fool the stock ignition so it has more advance. You don't need to fool the zeeltronic because you can...
  23. Replies
    297
    Views
    39,030

    Re: My X-2 Gen2 build

    You can program the zeeltronic to have whatever timing curve you want, there is no point in using one of those things that advances the timing by moving the pickup because that would just change the...
  24. Replies
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    1,067

    Re: Dual 44's on a 650sx

    I want to hear how it goes.

    I think 44's will be great, but I'm weird...and I haven't actually tried it, so I could be completely wrong and blissfully ignorant.

    Some day I'm going to try dual...
  25. Replies
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    2,167

    Re: Pump physics, nerd talk!

    True. Seems like everybody on here is looking for the "bottom end hit" and goes with the low port cylinders and "don't raise the exhaust port", so I made the assumption but I shouldn't assume.
  26. Replies
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    2,167

    Re: Pump physics, nerd talk!

    I dunno, sure seems to me like those two motors have about the same port timing, the pipe on the 750 would come on lower if anything (maybe not, you said "lengthened" west coast, but still hard to...
  27. Replies
    335
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    63,144

    Re: ***Fastest 'current' 550 in the world***

    Dual Keihn carbs with my custom fuel delivery mods (HF Mikuni booster pump w restrictor circuit), HF bilge pump (auto and manual switch) ,

    I'm trying to figure out what the " HF Mikuni booster...
  28. Thread: Mikuni Carbs

    by Storbeck
    Replies
    7
    Views
    434

    Re: Mikuni Carbs

    This comes from taking two carbs that came oem on single carb jet skis and pairing them together to make a dual carb setup. There are so many slight variations on the carbs that came stock on skis...
  29. Replies
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    898

    Re: Different Mikuni Twin Carb set-ups

    I don't see any reason why you would have to change the linkage on the Yamaha carbs. The Kawasaki spacing is 2mm wider than Yamaha, but the yamaha linkage probably would still work fine. If you're...
  30. Replies
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    898

    Re: Different Mikuni Twin Carb set-ups

    If you look down in the 40i's, the narrowest spot where the throttle blade is has a smaller diameter than the 44's, they just flare up to a big opening at the top.
  31. Replies
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    898

    Re: Different Mikuni Twin Carb set-ups

    Yeah the picture is definitely yamaha 44's (#1) and the link is "straigh from mikuni" 44 (#2)
  32. Replies
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    898

    Re: Different Mikuni Twin Carb set-ups

    The terms "oem" and "aftermarket" get a little tricky when talking about sbn 44's.

    There are:

    1. The carbs that came on a Yamaha 760. Some people call these "oem 44's" because they were used...
  33. Replies
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    2,167

    Re: Pump physics, nerd talk!

    No idea I've never personally tried it, but again the consensus online is that the westcoast is more high rpm oriented.

    Kweasel is a better guy than me to ask that question.
  34. Replies
    8
    Views
    898

    Re: Different Mikuni Twin Carb set-ups

    If you bought a set of Yamaha OEM dual carbs, they wouldn't be 46's, yamaha never had oem dual 46mm sbn's, they did have 44's on 760's. I suspect that is the case because I have a set of 40i's and a...
  35. Replies
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    2,167

    Re: Pump physics, nerd talk!

    Ah he beat me too it.
  36. Replies
    20
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    2,167

    Re: Pump physics, nerd talk!

    Coincidentally, I've been digging around reading a lot of "what impeller should I use in my 650" threads lately, almost all of them say a skat 6.5 is too much especially with a Westcoast pipe. I have...
  37. Re: Kawasaki Big Hub swirl impeller, 650 motor...who's running one, what's your setup

    kweasel I have a motor that I think wants to rev fairly high. It's about 186 degrees exhaust duration, R and D pipe, ~170 psi compression (I prefer actual compression ratio, it's a measured 13:1, but...
  38. Replies
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    1,887

    Re: WTB Pro Tec Mach 2 pipe

    Bumpity bump.
  39. Replies
    20
    Views
    2,167

    Re: Pump physics, nerd talk!

    Stubby pump cones...I have a really hard time believing they do much other than look shiny and provide a placebo. I can kind of squint my imagination and see how it might slightly increase the volume...
  40. Re: Kawasaki Big Hub swirl impeller, 650 motor...who's running one, what's your setup

    Thanks, I have an x2 so unfortunately I don't think there is any such shaft that makes life easier. I do however also have a lathe so fitting the 750 impeller to the 650 pump is no problem.

    I'm...
  41. Re: Kawasaki Big Hub swirl impeller, 650 motor...who's running one, what's your setup

    Awesome that's good info!

    So if I'm understanding correctly you've tried at least an 8/16 c75 skat big hub, the classic ka-sc-i solas at 13/18, and a Concord 11/16.

    How did the skat big hub...
  42. Re: Kawasaki Big Hub swirl impeller, 650 motor...who's running one, what's your setup

    Thanks

    Yes I'm aware of the modifications needed to fit a 750 impeller in a 650 pump.

    You have run an 8/16? What are the rest of the specs of the motor you used other than the coffman pipe?
  43. Kawasaki Big Hub swirl impeller, 650 motor...who's running one, what's your setup?

    Either a skat c75 or an SXR impeller stock or modified in some way.

    Who is running one, what rpm are you pulling with it with what nozzle, how many mph if you knw, what motor setup (carb/carbs,...
  44. Replies
    14
    Views
    1,887

    Re: WTB Pro Tec Mach 2 pipe

    Still a lot of winter left up here, patiently waiting. Might have to just run the B pipe on this ski if I can't find one, there are worse problems to have.
  45. Replies
    14
    Views
    1,887

    Re: WTB Pro Tec Mach 2 pipe

    Bump, somebody has to have an old dusty pipe in a box that they don't use any more because they got a B pipe.
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