Facet #40171 Users Check In

Discussion in 'Crazy-Awesome almost Dakar racers (950/990cc)' started by DockingPilot, Feb 28, 2008.

  1. AdvGa

    AdvGa Long timer

    Joined:
    Nov 25, 2009
    Oddometer:
    1,320
    Location:
    Atlanta Metro
    The Facet Pump's INLET Fuel source needs to be Filtered to protect the Pump Mechanism from damage.

    When I talked with the Facet Engineer,

    he suggested a 74 Micron Fuel Filter but Most, if not all Filters, are NOT marked with its filtering capacity.

    The problem with most Fuel Filters in Stores are Opaque and Do Not have their Filtration Specs listed.

    I found these Glass ones where you can see inside and they have been doing well for years:

    http://www.bikebandit.com/biker-s-choice-fuel-filter-fittings-kit


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  2. mattc

    mattc Been here awhile

    Joined:
    Aug 28, 2007
    Oddometer:
    632
    Location:
    West Baton Rouge
    Mine let fuel leak thru while sitting, and would flood the engine.

    Did a Dr. Bean kit on my stock pump. All better, no rigging some junk into place that doesn't belong. MUCH better! :clap
  3. triplenickel

    triplenickel Long timer

    Joined:
    Jul 9, 2008
    Oddometer:
    2,509
    Location:
    Campbell River, BC. Fantasy Island
    No contradiction here! :rofl
  4. pdxmotorhead

    pdxmotorhead Long timer

    Joined:
    Mar 4, 2012
    Oddometer:
    1,144
    Location:
    Portland OR
    I've used the facet pumps on buggies since the 80's there is a small screen in many of the pumps that I've had clog up.

    I used to use thermal epoxy to put a 1" AL heat sink on the big transistor on top and one on each side to help keep them cool. (They need a little ventilation... not a bunch but some.)

    I've literally put a hundred thousand miles on them on multiple vehicles.

    Cheers
    Dave
  5. superhak31

    superhak31 Adventurer

    Joined:
    Jan 17, 2010
    Oddometer:
    91
    Location:
    Burbank, Ca.
    Had a Carter and i neglected to put a pre filter inline = FAIL. Replaced with facet 40171 w/prefilter. Better pressure ratio and it works great. No fuel hydro locking like the carter/napa. 06' 950 adv/blk
  6. mattc

    mattc Been here awhile

    Joined:
    Aug 28, 2007
    Oddometer:
    632
    Location:
    West Baton Rouge

    Well, I look at it as a better of two solutions. One works fine for me without having some janky shit rigged up. The other works, but not as it is supposed to, and has to be "customized" into place.
  7. triplenickel

    triplenickel Long timer

    Joined:
    Jul 9, 2008
    Oddometer:
    2,509
    Location:
    Campbell River, BC. Fantasy Island
    It's all good bud, just teasing.
  8. mookymoo

    mookymoo Mookish Mook

    Joined:
    Aug 26, 2007
    Oddometer:
    4,400
    Location:
    Either UK or Australia ...
    The eroding points are just one failure mode.
    Many stock 950 pumps also seize (the piston corrodes/seizes). Mine failed this way the night before I was planning to swap it out. In some cases, a sharp whack on the pump will free the piston and have it work again (for a limited time, I guess) - which is how I got home that night.
  9. Hobbes950

    Hobbes950 Darth Kitten

    Joined:
    Jun 9, 2007
    Oddometer:
    4,516
    Location:
    Nevada City
    My facet 171 died on a local ride. Only 60 miles through several puddles, had just hit the highway for the short stretch to home and the classic sputter and die. Ignition on, no click click from the pump. Used my AAA to get home and after sitting over night it worked again.
    I have a day trip this weekend and next weekend. Part of me says just go with it and carry my stock that was working when I did the Facet as "preventative maintenance."
    The other part says to check the stock points and put it back on. But I am hesitant because I am going to go with Dr. Bean and this would mean having to take it back off again.
  10. renogeorge

    renogeorge Let's ride!!

    Joined:
    Apr 7, 2007
    Oddometer:
    2,266
    Location:
    Reno
    Just curious....had you just installed the Facet? Mine has been bulletproof for 30k miles.
  11. Hobbes950

    Hobbes950 Darth Kitten

    Joined:
    Jun 9, 2007
    Oddometer:
    4,516
    Location:
    Nevada City
    I believe there is maybe 10,000 miles on it. No more than 18,000. I installed it a year or two after I got the bike in 2010.
  12. Orangecicle

    Orangecicle On a "Quest"

    Joined:
    Apr 24, 2007
    Oddometer:
    4,105
    Location:
    West Des Moines, IA
    Question for the group: Will the Facet keep pumping all the time without back pressure? I'm building a KTM 690 Quest: http://advrider.com/forums/showthread.php?t=1026063 The Quest typically uses a vacuum pump to push the fuel from the front tanks to the rear, where the fuel pump is located. The vacuum pump runs all the time, overfilling the rear tank until the front tanks are dry. Excess fuel is just routed back to the front tanks.

    I think I could use a Facet on an as-needed basis (switched) to push fuel to the rear when I want fuel in the rear. But, the Facet would have no back pressure, and I don't know if the pump will keep pumping all the time when switched on. If all it does is prime and then stop as it does on my 950, that wouldn't work.

    Any thoughts?
  13. gefr

    gefr Life is a trip

    Joined:
    Nov 26, 2005
    Oddometer:
    4,629
    Location:
    East Med, Greece
    The Facet pump, when connected in place of the original, works when it gets power from the ECU. When key is turned, it primes for a small period of 5 secs and then stops. When the motor is running, power is constantly on so the pump works continuously.
    OEM pump works on demand with pulses. When it finds pressure in the fuel lines, pulses stop, until fuel lines' pressure drops. Then pulses restart.
    Hope that helps.
    Cheers
  14. darkstarmoto

    darkstarmoto Am I evil? Yes I am

    Joined:
    May 24, 2009
    Oddometer:
    515
    Location:
    SEPA
    I knew if I read this whole thing I'd find someone talking about this. This is exactly how I find my Facet plumbed by the PO, besides the obvious (having to remember there are 2 places to turn off fuel) does anyone have any other negatives that I'm not thinking of? Currently I kind of like this as it would let me use 1 tank as a "reserve" per say, or let's me isolate a tank say in case it gets a puncture or leaks for some reason.

    [​IMG]
  15. Pete640

    Pete640 Long timer

    Joined:
    Nov 23, 2008
    Oddometer:
    2,089
    Location:
    Earth
    That's exactly how mine is plumbed. The tanks can still balance and also be isolated. My rear tanks are also plumbed into the front line before the filter
    I also leave a small length of hose on the main fuel tap to drain fuel for other bikes or assist starting a camp fire, etc...