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  1. upstand2

    Super Jet cylinder pics 2 tanks after fresh top end

    Does look lean.
  2. upstand2

    SX/SXi/SXi Pro timing retarder on msd enhancer

    Yes, it will be noticable. Enhancers alone suck off idle untill midrange. http://www.msdpowersports.com/pwc_enhancers.html
  3. upstand2

    SX/SXi/SXi Pro Are sponsons really worth it on a 750sx?

    I cut some $20 ZXI sponsons in half and bolted them to the front of my ski. Alot more linear in the corners now. Probaly not even close to Tubbies, but I'm cheap.
  4. upstand2

    SX/SXi/SXi Pro timing retarder on msd enhancer

    Kinda a goofy system , but it works. The Enhancer bumps up the timing in the midrange but it's actually retarded on the low end So, you need the timing advance plate to put it back up there for a snappy lowend But, if you have too much compression you'll detonate. The timing retard is a...
  5. upstand2

    SX/SXi/SXi Pro timing retarder on msd enhancer

    I would'nt run it without it. You might have low enough compression to get away with it. I'd spend the $30. I have one, my buddy didn't. We were racing back to the harbor on a flat day. His ski didn't sieze but it started to not run right. We popped the head, and his pistons looked like a scoop...
  6. upstand2

    SX/SXi/SXi Pro will a 650 pipe fit on a 750?

    yes, with a u bend.
  7. upstand2

    SX/SXi/SXi Pro What pipe is this?

    If you spend $40 for a Flowcontrol valve and put it to the line with the waterbox or stinger it will make it pretty snappy. You could even do two if you wanted. That's alot of water dumping in there. I wouldn't spend the money for another pipe until your buddy can beat you. I've rode a couple...
  8. upstand2

    Increasing Magnum pump setup

    I'd say the bigger pump is the fix. I had a similar problem with mine. I got a hold of an old 19-21 mod impeller with a 4mm bigger hub. It helped a bit.
  9. upstand2

    SX/SXi/SXi Pro MSD Ignition Enhancer

    If you get one be sure to run it with an advance plate and retard module. I know that sounds like it makes no sense but the retard module is only for higher rpm.
  10. upstand2

    SX/SXi/SXi Pro Weak Spark

    Happened to my 96. It was the stator.
  11. upstand2

    300/440/550 87' 650 SX Rattling noise??

    Seems like 650's always do that. Not sure why.
  12. upstand2

    SX/SXi/SXi Pro To much Bottom?

    You can use ecwi on wet pipes, including stock pipes. I've used it on 5 different boats and it's always been money well spent. I've fought the bottom end battle on Kaws before. Heres what improves the bottom end in order of results. 1. ecwi with or without aftermarket pipe 2. 81mm nozzle &...
  13. upstand2

    SX/SXi/SXi Pro To much Bottom?

    Claimed to give (and I beleive them) 20% more toruqe at low rpm. It really works wonders on 750's, really about the biggest bang per buck there is. http://www.factorypipe.com/a_ecwi.php
  14. upstand2

    SX/SXi/SXi Pro To much Bottom?

    ecwi works better than anything on these boats.
  15. upstand2

    figuring out impeller pitch...

    A protracter will even be fairly accurate.
  16. upstand2

    figuring out impeller pitch...

    Menards,Hoime depot, $5 pitch guage.
  17. upstand2

    SX/SXi/SXi Pro Show off your 750's - Pics and Info

    My 96. Jensen ported Super Cylinder,MRD, 12 vane mag pump, Stevensens 19-21 prop. I'm going to flat deck it and put fixed steering on it, I'm getting old.
  18. upstand2

    SX/SXi/SXi Pro 750 sxi rideplate to 750 sx?

    It will fit, as long as it is for a 95,96 SXI and not a SXIPro, 97 up.
  19. upstand2

    300/440/550 Problem whith js500 pjs

    http://www.pwctoday.com/search.php?searchid=3867107
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