ANYONE THAT IS RUNNING THE MIKUNI FUEL PUMP ON A 950....

Discussion in 'Crazy-Awesome almost Dakar racers (950/990cc)' started by D-man, Oct 20, 2016.

  1. D-man

    D-man SALLGOOD

    Joined:
    Sep 20, 2006
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    949
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    Spud country, SE IDAHO
    probably a good Idea, shouldn't need it, not that sharp of a bend but I think I will do it anyway. I replaced the hose with one that is stiffer too.
    #21
  2. MultiDoc

    MultiDoc Been here awhile

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    Mar 26, 2016
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    Wales, UK
    Thanks for the link! Unfortunately they have every rebuild kit for all Mikuni pumps... except the one I need.

    Anyone has any of source? Otherwise the only (silly) alternative would be to buy the whole pump as a spare.
    #22
  3. twobarb

    twobarb Adventurer

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    Wheat Ridge CO, Garden City KS
    Go to sudco.com and look in their catalog (click on the catalog image, it's kinda confusing ) if it's in there hit up a local shop, most have an account with sudco.


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    #23
  4. twobarb

    twobarb Adventurer

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    Which pump is raid using? I just assumed it was the DF52-73.


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    #24
  5. MultiDoc

    MultiDoc Been here awhile

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    It's the DF52-136. Emailed them and asked if they have a rebuild kit I could get through them. Dave from Raid Designs responded just earlier and seems they d have it.
    #25
  6. Corsica101

    Corsica101 Been here awhile

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    Jan 5, 2013
    Oddometer:
    569
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    Valencia
    [​IMG]
    This is how I got it setup, runs fine!



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    #26
  7. SE Steve

    SE Steve Super Noob

    Joined:
    May 18, 2011
    Oddometer:
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    So Cal
    I installed the Raid pump on my bike after the stock pump crapped out. Worked great forgot to turn the fuel taps off on a trip with the bike in the back of my truck. Flooded the engine. Ran into a problem with the pump vapor locking in high temperatures over 100 degrees. Rebuilt my stock pump with the dr bean kit no problems since.
    #27
  8. veetwo _tls

    veetwo _tls RENOVATIO:

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    THE MALLEE OUT BUSH
    Back when i had the CV carbs & airbox
    Never had a problem since with fueling

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    Inline tap & filter setup With the FCR's Now
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    #28
  9. beemer boy

    beemer boy Oh no, he's gone Asian

    Joined:
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    Oddometer:
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    Southern Oregon
    The original pump was crap as everyone knows by now. The facet pump is a bit
    better. But the real solution, which everyone should use , is to put in a
    Carter solenoid electric pump. Cost is about 45 bucks, dead silent, and worked perfectly on all
    the bikes I put it on. Three Africa Twins and a KTM 950. It actually slips into
    the exact same stock rubber mount.

    http://www.jegs.com/i/Carter/180/P7...9WD85ejiqw-sBfT7nhvlLUkBmUiG6AloaApW3EALw_wcB

    [​IMG]
    #29
  10. veetwo _tls

    veetwo _tls RENOVATIO:

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    I ran the mikuni vacuum pump since late 2007 i NEVER had a problem with it & it's one less electrical problem to deal with & it's fixable if had too replace a gasket on side road or out middle of Australia. electrics worth shit compared to mechanical pumps here out bush
    #30
  11. Zuber

    Zuber Zoob

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    The Carter pump looks good, but output is 6-9 psi. That's way too high, you'd have to add a fuel pressure regulator and set it down to 3-4 psi. It may work on the highway, but it would probably stall out if you hit a jump.
    #31
  12. darkstarmoto

    darkstarmoto Am I evil? Yes I am

    Joined:
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    Check out Winderosa Fuel Pump Repair Kit 45145, Amazon has them for $4.85. Supposed to be the right one for the DF52-136.
    #32
  13. beemer boy

    beemer boy Oh no, he's gone Asian

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    Carter makes models of this pump with different pressures . I just looked up the link quickly so this may not be the exact one. I installed these pumps on my KTM 950, as well as the Africa Twins. They worked flawlessly on all the bikes .
    #33
  14. Zuber

    Zuber Zoob

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    #34
  15. Zuber

    Zuber Zoob

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    A couple of odd vacuum pump installs -

    I worked on an old KTM LC4 single that had a vacuum pump. It was producing too much pressure for this worn out carb, not normal for these pumps. Someone had lowered the pressure by running a line from the pump output back to the input. There was a Tee from this line to the carb. So, it pumped in a circle with just enough left over pressure to feed the carb.

    The early Husabergs had an odd shaped tank that extended below the carb on one side, the other side ended above the carb. The carb was gravity fed from the upper side of the tank and a vacuum pump pulled from the low side and re-filled the upper side. Don't know why they didn't just feed the carb directly?

    When these systems run out of fuel, it can take a lot of engine cranking to prime them again. Unless the pump is gravity fed below the fuel level.
    #35
  16. Bearded Hooligan

    Bearded Hooligan Moto Addict

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    Mar 30, 2004
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    This is what I am using for the last 10k miles. Mine stock pump with the DR. Beans kit died on a 6 week /14k mile trip at about the 5k mile mark, in the middle of nowhere. Found this pump at a Napa and installed, been there since. Picked up a spare in Fairbanks before making the run to Prudhoe Bay as insurance, its still in the box, now on my work bench. Simple, available just about anywhere and has been reliable so far.
    #36
    beemer boy likes this.
  17. Corsica101

    Corsica101 Been here awhile

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    Jan 5, 2013
    Oddometer:
    569
    Location:
    Valencia
    Had a Mikuni pump and used it for the MDC '17. Got airlocked every time the fuel started boiling in the Morrocon heat. Not good in a rally! this one been working fine so far

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    #37