Alternative fuel pumps for FI KTM990

Discussion in 'Crazy-Awesome almost Dakar racers (950/990cc)' started by cjracer, Jan 9, 2009.

  1. PowerCell

    PowerCell Manufacture

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    Hey Tahoe, what model pump did you use? What type of failures did you experience? What did you use for a pressure regulator?
    #61
  2. Head2Wind

    Head2Wind MotorcycleMayhem

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    suggested alternative? Walbro?
    #62
  3. fast4d

    fast4d Long timer

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    that's way too much pump. you're going to heat the fuel when it circulates excessively. unless you lower the voltage supplied. I've had experience with aeromotive external pumps. they DON'T like being run dry so take that into consideration when mounting.

    what's the output of the stock pump?

    I think it would be much better to use a walbro intank pump. they are OEM quality and will last a long time.
    #63
  4. tahoeacr

    tahoeacr Long timer

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    I think it was A1000. Cartech pressure regulators but there not reliable enough I think for this application.

    I prefer in line Bosch or Walbro. I've had 100% success with these.
    #64
  5. LukasM

    LukasM Long timer

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    PowerCell,

    Please me updated on your findings. I am using an FI engine (Kawi 650) in my project bike that will be equipped with the 4 tanks from a carbed 660 Rally and I am not sure which way to go yet. I'll probably need a surge tank, inline fuel pump and a return style pressure regulator (45psi) as well.


    Do you happen to have any particular recommendations? All the ones I have seen at Jegs and Summit have very high draw since they flow lots of fuel - way more than I need anyway.
    #65
  6. fast4d

    fast4d Long timer

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    I used an A1000 for about 10k miles. I had its predecessor (same design)for about 40k miles. I upgraded because it was not adequate for the HP I was making (550rwhp).

    you must run the filter AFTER the pump.
    #66
  7. Head2Wind

    Head2Wind MotorcycleMayhem

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    ya, a lot of pumps do not like the restriction on the intake side, makes the pump run hotter too. the 5 micron serviceable one looks like the ticket.
    #67
  8. PowerCell

    PowerCell Manufacture

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    OK, here's an external pump that might help the 990 guys out. It's a Keihin product found on a Honda quad. Puts out 70 liters per hour at 2.4 amps. Includes a pickup filter and is very easy to service. Cost from Cheapcycleparts was $115. The only problems I currently see is the internal pressure regulator is set to 42psi, but I think it will be pretty simple to bump it up to 51. And the other problem is where to install it?


    [​IMG]

    [​IMG]

    [​IMG]
    #68
  9. PowerCell

    PowerCell Manufacture

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    If anyone has a dead 990 fuel pump that they no longer need (or care to look at), can you send me a PM. I'm looking for parts off the orginal unit for an experiment I've got going on my SE.

    Also, I might have a lead on a cheap fuel filter that would be a factory fit, and I'd like to check it out and see if everything will fit correctly... :thumb
    #69
  10. gefr

    gefr Life is a trip

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    The motor shape and dimentions look similar to OEM. The rest system of the OEM should be undamaged, except the filters. This could be a solution. Cheers.
    #70
  11. PowerCell

    PowerCell Manufacture

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    What pump are you referring to Gefr?
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  12. gefr

    gefr Life is a trip

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    Isn't that the one you are trying to find a replacement for?
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  13. PowerCell

    PowerCell Manufacture

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    No, I'm working on something completely different, but keeping an eye out for 990 solutions that might help others...
    #73
  14. Head2Wind

    Head2Wind MotorcycleMayhem

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    I have a Denso pump out of a CBR600F4i that I have been chasing around trying to find spec's to no avail. Denso doesn't list it as a replacement so no pump graphs/details. Price might be better that the KTM part, however this latest unit that PowerCell is showing looks promising.

    PowerCell, what are the dimensions of the "cell" that contains the pump and bits?

    there is a low lph Walbro out there too, might be interesting to pursue, however does not have the integrated pressure regulator.
    #74
  15. PowerCell

    PowerCell Manufacture

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    It's about 6" tall, by 4" wide...

    The smallest Walbro you want to run is the GSL393 at 160 LPH. The GLS395 (130 LPH) is only good for about 30psi...
    #75
  16. Head2Wind

    Head2Wind MotorcycleMayhem

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    I must be completely incapable of finding that damn thing on Cheapcycleparts.com.... do you have a URL reference?
    #76
  17. Head2Wind

    Head2Wind MotorcycleMayhem

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  18. Head2Wind

    Head2Wind MotorcycleMayhem

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    Walbro inline gsl393 might be a good solution too. Current draw at ~12vdc is going to be ~5.5A

    I wonder what current the Keihin unit draws at that psi/voltage?

    [​IMG]
    #78
  19. Head2Wind

    Head2Wind MotorcycleMayhem

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    looks like this might be easier to get into the already tight 950/990 package in combination with a inline serviceable filter and a intank sock filter

    [​IMG]
    #79
  20. Rapid Dog

    Rapid Dog bikes, booze, broads...

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    ...has anyone resolved this issue?:shog
    I'd like to pre-fix this ahed of time...already had the waterpump recall, slave fixed...WTF is next?
    #80