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  1. Re: 650sx 225PSI - Advance or retard timing?

    Thanks Ben!,
    How much should I retard? What should i keep an eye on? if it starts to deto should i pull back the compression i assume or pull back the timing? Much appreciated your input, please...
  2. 650sx 225PSI - Advance or retard timing?

    I have a 650sx engine with a mariner head, its at 225psi. I also have a SBN44, Factory exhuast pipe, js550 tucker waterbox, going in a 550sx.

    I would like to know if its safe/recommended to...
  3. conversion plate... 650 to js550 hull

    I need a conversion plate for a build... I could actually more than one.

    Please text price and picture if possible: 989 501-010nine
  4. 3 Place Stand up jet ski trailer for sale in Valrico, FL - Greater Tampa Area

    Hello,
    I just posted my 3 place trailer in the classified section. I wanted to let this local group know:
    $400
    http://www.pwctoday.com/showthread.php?t=457683&p=4315488#post4315488

    I...
  5. FLORIDA - 3 Place Stand up Jet Ski Trailer - Heavy Duty w/ Goodyear Car Tires

    3 Place Stand up Jet Ski Trailer - Very Heavy Duty w/ 50,000 mile Goodyear Car Tires with plenty of tread. This Trailer is ready to use. The axle is also heavy duty with grease certs. The front bunk...
  6. Re: FLORIDA - 1990 Superjet with Aluminium Handle pole, RIVA Scoop Intake, Protect Ri

    Or best offer, need to sell
  7. FLORIDA - 1990 Superjet with Aluminium Handle pole, RIVA Scoop Intake, Protect Ride

    1990 superjet 650
    starts and runs perfect
    clean MI Title in hand. Fresh water! only rode in salt water once, yesterday and flushed out.
    aluminum handle pole
    straight bars
    Riva deep loader intake...
  8. MI RIDER in Tampa area for the next week, looking for friends to ride!!

    Hello,
    I am from Michigan, I am currently in Velrico, FL. Greater Tampa area for the next week or so.

    I am here with my '90 Superjet, 550SX/650 conversion and my inexperienced cousin...
    ...
  9. Help Carb setting for a DUAL SBN46 CONVERSION 650SX in 550SX

    Hello everyone, this is another conversion ski I made. Its an all stock 95 650sx engine, coffman waterbox and i put on Dual SBN 46s...

    https://www.youtube.com/watch?v=0IRACKuUoMI

    The dual SBNs...
  10. Original or remake 550SX or JS550 DECAL GRAPHICS Sticker Kits vinyl

    I am looking to get a stock stick kit for a 550sx or a js550, I cant seem to find stock sticker kits or even remakes of them. Can anyone point me anywhere? Anyone have a sticker kit for sale??
    PM or...
  11. Re: 550SX Impeller - Higher the pitch the better!

    Thanks 123HI, Pm was received for 15/20 Solas as requested. He contacted same day and shipped same day(Friday), received the impeller on Monday. Very impressed with quality! Than k you 123HI for a...
  12. 550SX Impeller - Higher the pitch the better!

    I am looking to buy a impeller for my 550SX w/ 650 engine. I weigh 200 LBs. I want this setup for top speed. Anyone have a conversion impeller or a high pitch or KB-SC-C(15-20 variable)?
    Please PM...
  13. Re: RARE - One of a kind - JS550 Hydrofoil hull? - Any info - Willing to sell

    Someone make me an offer. I willing to let her go cheap
  14. 750 CDI Differences? Tuning differences???

    we know there is a big pin and small pin engine, and that the electonics changed at the same or similar time. thoughts on the following:

    Is the RPM Limiter different on models or all the same????...
  15. Re: RARE - One of a kind - JS550 Hydrofoil hull? - Any info - Willing to sell

    What I mean is. Its fast enough to be fun. and unstable enough to be fun, and yes! you can death roll it and I have! The pickles add for more sliding than stability.
  16. Re: RARE - One of a kind - JS550 Hydrofoil hull? - Any info - Willing to sell

    PM ME Please, if serious about purchasing. Item location is Bay City, MI 48706.
  17. Re: RARE - One of a kind - JS550 Hydrofoil hull? - Any info - Willing to sell

    PM ME Please, if serious.
  18. Re: RARE - One of a kind - JS550 Hydrofoil hull? - Any info - Willing to sell

    I was thinking the same. You could simply cut where the seat is attached to the handle pole, thus a removable seat and stand up capable, however I though doing so may degrade the originally of it,...
  19. RARE - One of a kind - JS550 Hydrofoil hull? - Any info - Willing to sell

    I purchased this ski last year. It was made by "Ricky Allison Thompson" of Brighton, MI. It was in non running condition when I bought it last summer, I went through everything and dropped a 550sx...
  20. Re: 550SX Reed Engine - 225 PSI - SBN - Tuning help

    Thank you for all the information. I have three different SBN44s right now. I am going to take them all apart and see what i have for jets and popoff...
  21. Re: 550SX Reed Engine - 225 PSI - SBN - Tuning help

    I think the jets and pop up are stock...well whats stock for a red sbn44... who makes the red sbn44?
  22. Re: 550SX Reed Engine - 225 PSI - SBN - Tuning help

    This engine did not have a carb on it per se when I bought it. However I bought it with another ski that was a 650sx, another nice ski. The person I bought the skis from was clueless. said the 550...
  23. Re: 550SX Reed Engine - 225 PSI - SBN - Tuning help

    448084
  24. 550SX Reed Engine - 225 PSI - SBN - Tuning help

    Hello,
    I put together a Jet that has the following:
    -550SX Reed engine: looks to be worked in many ways, has "R &R" engraved on cylinders. Has 225 PSI (the gauge is accurate)
    -SBN44
    -West coast...
  25. Re: 750sx:. need two ride plates. One scoop intake grate

    Bump. Need ride plates.
  26. 750sx:. need two ride plates. One scoop intake grate

    Need an extended ride plate for a 750sx.

    And need extended ride and scoop for sxi. Setting sxi up for topspeed. I think I need the longer the better, anything I think but I'd I'd like a worx if...
  27. Re: My Jetski can run without gas! or Spark plugs! WTF!?

    Just happened to me, that's why i am reading the thread....

    I have a 650sx engine in a 550sx hull. Its at 210 PSI..... It started after manual choking, I revved it twice, then it "ran away"! It...
  28. Re: Proper water line routing for 550 to 650 sx conversion

    That troll comment was worth a laugh.
  29. Replies
    8
    Views
    1,064

    Re: JS550 Engine Revs High

    there maybe a leak.... do a crank case "leak down test" look it up it is common.
  30. Re: js440 exhaust coupler blew and water lines blew.

    cooling goes from hull to exhaust manifold, though the cylinder, then through the head, to the pipe, then to the water box.
    good Luck!
  31. Re: js440 exhaust coupler blew and water lines blew.

    smoke pouring out of the hood!!!, Always an exhaust leak: leak in water box, coupler's, hoses, gaskets.. an exhaust leak under the hood will cause the jet ski to not run as there is too little air...
  32. How to convert a 550SX CDI TO work with a 650SX Engine for conversion. PLEASE CONFIRM

    92 550SX CDI | ~89 ^650 Engine and Regulator

    This picture is my understanding of what needs to be done with:
    1. 92 550SX CDI
    2. All original 650SX: engine/stator/Magneto/etc.
    3. 650SX Regulator...
  33. Proper water line routing for 550 to 650 sx conversion

    PASt BUILD THOUGHTS / ISSUES:
    I did a 750 dual carb conversion into a JS550 hull in the past and had issues with the water box "loading up"(at slower speeds or intermittent throttle the water box...
  34. Re: JS550/650SX Conversion Ski - CONVERTING CDI

    Does it matter which way you have the two yellow wires between regulator and magneto?
  35. Replies
    16
    Views
    3,723

    Re: JS550 Project

    125 PSI is way to low. No one mentioned this? old thread n e ways.
  36. Re: JS550/650SX Conversion Ski - CONVERTING CDI

    Thanks Again BLRider, I wish i could give you a thumbs up or a bump!:pimp:
  37. Re: JS550/650SX Conversion Ski - CONVERTING CDI

    because I am putting a 650 engine in a 550. So if you use the existing 550 cdi and change one internal component it is much easier than swappingthe complete cdi which is bigger and also then you need...
  38. JS550/650SX Conversion Ski - CONVERTING CDI

    Hello again, I've done a 550/750 conversion before but just mounted the 750 cdi in the hull, This time I want to use the 550 CDI and swap the necessary components...

    1. How to convert 550 CDI to...
  39. Re: Please Help me decide! 550sx motor swap

    The conversion ski is the way to go! 750 or 650! I had a dual carb 750 conversion and blew it into pieces. My 1995 750SXI is on its third motor, blew the first two into many pieces.... I have had...
  40. Re: 550SX REED Engine - 235 PSI ! What Race Fuel, Oil and mix Ratio???!

    yikes now I feel like a real asshole... I must have overlooked it, my main intentions was to ask mix ratio and octane.... I did not mean to deviate. second was: can I use kawi oil or would it be...
  41. Re: 550SX Connversion 650 Engine: What Coupler do I need?

    How do I easily get that coupler off... im nevious about banging on it(damage to bearings)...
    And also nervious of heating it due to seals..... currently soaking with wd40.
  42. Re: 550SX Connversion 650 Engine: What Coupler do I need?

    What impeller did you find to be the best for what you desired and what was it you desired?
    I am going for all out top speed. Also what other parts should I consider to acheive?
  43. Re: 550SX REED Engine - 235 PSI ! What Race Fuel, Oil and mix Ratio???!

    What impeller should be in there.

    Should I be using yamalube in all my skis instead of kawi. I here good things about the yami lubi
  44. Re: 550SX REED Engine - 235 PSI ! What Race Fuel, Oil and mix Ratio???!

    I do not want to or intend lower the compression. Can people please stop advising this. If I want to lower the compression I will sell this to someone who wants this type of compression and get a...
  45. Re: 550SX REED Engine - 235 PSI ! What Race Fuel, Oil and mix Ratio???!

    Is there anything wrong with leaving the PSI where its at and running race fuel?
    This will be the third ski I rarely ride, I have an SXI and 550SX/650 Conversion.
    What Gas, Oil and Mix ratio...
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