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Thread: project 650

  1. #1

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    project 650

    Hello , I'm new to the site, and am trying to get my 95 project sl650 running. I bought it as a non runner for cheap. I had to replace some electrical stuff to get spark, so that problem is solved. Next I moved to the no fuel problem. First removing tank cleaning and checking that lines where ok. Proceded to check out carbs, and found that they were gummed up beyond repair.( rusted out). Can I use a rack of carbs off a sl750? I also bought the mikuni round three outlet 32-37 lph pump, but am not sure which inlet is for the pulse line or inlet > maybe some one could chime in on that one. otherwise I think I'm almost ready to get er started BTW it did start when i put some fuel down the carb's. I also got an oil block off plate to install. I would rather mix my gas than waste oil or starve the the motor of oil. Any other advice would be welcome and, I look forward to many enjoyable hours here in the polaris forums! Thanks


    John


  2. #2
    cameron da river rat's Avatar
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    sounds like your well on your way with that thing. you've got the common problem fixed, but im afraid i cant remember which hose goes to what on the fuel pump but i think they are labeled with arrows as in or out. those were decent engines, they just crapped out when they did'nt get any fuel as will all engines.

  3. #3



    Top without black cap is pulse and lower Right is in see arrows ! The 750 rack will work! but check for jet sizes! and verify pop off! Mix at 40 to 1
    Last edited by ZMANN; 09-08-2006 at 04:56 PM.

  4. #4
    Moderator beerdart's Avatar
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    650's Rock with 750 motor and extended pump.
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  5. #5
    ph2ocraft's Avatar
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    I think it's great seeing all of these older rides coming back onto the water. Awesome job you guys!!!!

  6. #6
    Race, wreck, repeat delagem's Avatar
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    Umm, Randy at Watcon told me not to run that pump! He says it's barely adequate when the pump is new, but as performance of the pump drops off it can run your engine lean.



    This is the one I run, it's a dual outlet which was how I had already re-plumbed my carbs. Or you can buy the triple outlet version.

    The pumps have little arrows on them, inlets point in, fuel outlets point out, the one without an arrow is the pulse; it's also on the other side of the pump from all the others....

  7. #7
    ph2ocraft's Avatar
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    I still don't think you can get the 65gph unit in a triple output application.

    I can also tell you for a stock application, I've yet to see the triple outlet pump rated at 35gph cause a lean running condition. By calculation it's more than enough.
    But better safe than sorry I guess.
    I would like a 65 gph triple outlet for my upcoming tripled project boat. I guess I'll have to look harder.

    Randy??????

  8. #8
    Moderator beerdart's Avatar
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    780's came stock with them I have them on all my ski's
    Also you can add a port to the dual output one's.

    Part# 3240291
    http://cgi.ebay.com/ebaymotors/ws/eB...RK%3AMEWN%3AIT
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  9. #9

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    Thank you all for the info. Right now I'm putting the intake back on after installing the oil block off plate. Taking the manifold off seemed the easier way to get to the oil pump. Next thing I need to do is replace the 750 carbs with 650 jets. BTW what size jets go in that 95 650 anyhow? I still need to mount the new fuel pump (low in the bulkhead) I believe.I'm not sure what to do with the oil tank maybe I can use it for A reserve fuel tank? So far so good, and again thanks for the help folks!

  10. #10
    Race, wreck, repeat delagem's Avatar
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    Ok, according to Clymer:

    Pilot jet #77.5
    Main Jet #87.5

    Lo Speed jets: 1 1/8 open
    Hi Speed Jets: mag 1 1/4 open
    ctr 1/4 open
    Pto 7/8 open

    Popoff 10-18 psi.

    That's for the 650STD and SL650 both.

    Hope that helps.
    Michael

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