Facet fuel pump installation...long



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  1. #1
    GSPD750's Avatar
    GSPD750 is offline Senior Member
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    Facet fuel pump installation...long

    I have had my share of fuel pump woes in the past on my '99 @ and now I feel I have finally solved them with the recent install of this US made solid state Facet pump. Model # 40105

    The original OEM pump failed after the contacts burned out. Probably not a 'bad' pump once it was modified for a suppressor to prevent the contacts from pitting. But the new OEM pump does not come cheap. $$ Alternative? Yes.

    Next...the nice people at African Queens sent me the Mikuni vacum pump. It seemed to be the answer, and after a few thousand kms it was performing flawlessly. Then it seemed in hot weather conditions I would experience fuel starvation symptoms. Fuel was somehow bypassing and blocking the vacum source... well at least according to the people at AQ. The 'T' fitting trap mod to trap this fuel from AQ did not seem to work either. It was from the South African AT Club that I first heard of the Facet pump.

    Ok, for only $29 USD plus shipping I can experiment. The first model of pump I ordered was #40106. The claimed pump pressure on this model is 4-6 psi. Another web source claims the pump pressure is 4-5.5 psi. I quickly installed this pump (hot wired) for a rally I attended. After 2,000 kms round trip it worked perfectly. Having not yet hard wired it to the fuel cutoff relay I occasionally would forget to unplug it (as it was wired direct to the battery) and after shutting the ignition off the pump would continue to run and fuel would spew out the carb overflows via the drain tube onto the ground. No problem, once I permanently hard wired it it to the fuel cutoff relay that fuel spill would be eliminated.

    I now permanently hardwired the model 40106 in and drove it hard and fast. It was then I noticed a small amount of fuel coming from the carb overflows when idling at a stop. Mmmm....It was a leak and not acceptable. It was enough to tell me the 40106 pump pressure is just a wee bit on the high side.

    Ok, I now ordered in the Facet Model # 40105. Claimed pressure is 2.5 - 4.5 psi, depending on the web source, I have also read where pressure is 2.5 - 3.0.
    FYI. The pump model numbers are stamped on the pump mounts.


    Time to install the 40105.



    The pump measures less than 3" in any direction and weighs in at 18 oz.



    Lets cut off the pump mounts which are not required. Don't forget those
    safety glasses.



    Sand off any sharp edges.



    The OEM pump rubber shock mount fits right over the Facet pump. Its a tight fit but it can be done. A little silicon spray on the rubber eased the installation.



    Lets slightly bend the upper mount support upwards and lower downwards on
    the frame to accomodate the Facet.



    To install you simply push it onto the supports. Views are fuel "IN".





    Fuel "OUT"



    Fittings are 1/8" X 27 Internal Pipe Ports



    Connecting the wires is straight forward. You can use your old connector
    from the OEM pump and splice it in. Black wire from the new pump goes to the green wire which is (ground).
    The red wire from the new pump goes to the wire that is colored blue/black. That wire in turn goes to the fuel cut-off relay as seen in the Haynes manual wiring diagram.
    Connect wires using solder or a quality crimp style butt splice. Fuel hoses have to be shortened accordlingly.
    If rubber shock mount should get damaged during the struggle to get it on the pump they can be replaced from Honda. p/n 16711-MN8-000.

    Also, don't forget a few wraps of teflon tape on the threads of the brass fittings or you may have a leak.

    Last edited by GSPD750; 11-02-11 at 07:31 PM.
    1998 XRV 750
    1996 XL 600v

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  4. #2
    DaveS's Avatar
    DaveS is offline Ex XRV Site Owner
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    Very interesting
    Now to find where to buy one on-line.
    After a bit of googling I see that they are used a lot for aviation which supports the idea of longevity!

    I also found this:

    Type 40105 is 12V negative ground 2 1/2 to 4 1/2 PSI max 30 GPH 1/8 x 27 internal pipe ports

    Type 40106 is 12V negative ground 4-6 PSI Max 30 GPH 1/8 x 27 internal pipe ports


    Another site says:

    Facet Fuel pump 40105 - K
    Road use. Flow Rate 12 gals/hr. 2.5-3.0 PSI

    Facet Fuel pump 40106 - K
    Fast road use. 18 Gals/hr. 5.0-6.0 PSI.


    Which confirms your theory on the pump pressures.

    http://www.lightaero.co.uk/las/9/55?id=69 - £24.27
    http://www.sky-craft.co.uk/ - £14.00

    I've asked Skycraft if they have them in stock and whether we could bulk order from them.
    2015 BMW R1200GSA
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    http://www.sky-craft.co.uk/ - £14.00

    I've asked Skycraft if they have them in stock and whether we could bulk order from them.
    Wow! 14 UK pounds from Skycraft. Is that a typo? Thats cheaper than buying direct from the USA. At that price everyone can afford to pack one as a spare.

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    modrover is offline Senior Member
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    Once again... very nice report!
    BOOMSHANKA!


    ~Michael
    '88 Africa Twin HRC RD03
    '89 SuperEnduro Transalp
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    http://autos.groups.yahoo.com/group/...TRANSALP_MODS/

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    londonbubble is offline Senior Member
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    When i bought my bike earlier this year, it already had a facet pump fitted, i had never heard of Facet before so i was a bit concerned as to wether it was any good or not.

    After putting the AT through its paces on a six thousand mile trip this summer through a variety of different weather the pump passed with flying colours. I have asked my local bike shop about facet pumps and he said they were very good pumps. I did not realise that they were that cheap so i may buy a spare any way.

    London Bubble

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    banger is offline Senior Member
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    On the skycraft web site today for £12 !!!!!!!!!
    1995 xrv 750 RD07 - sold
    1982 yamaha xj 650 Seca - sold
    2002 FJR 1300 - crashed

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    Moose Guest
    Plus the dreaded VAT = £14.10

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    DaveS is offline Ex XRV Site Owner
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    Quote Originally Posted by GSPD750
    http://www.sky-craft.co.uk/ - £14.00

    I've asked Skycraft if they have them in stock and whether we could bulk order from them.
    Wow! 14 UK pounds from Skycraft. Is that a typo? Thats cheaper than buying direct from the USA. At that price everyone can afford to pack one as a spare.
    Right I've had a response back from SkyCraft.
    They are aircraft breakers and therefore don't stock them new, hence the cost as well.
    I've asked how many they do have.
    2015 BMW R1200GSA
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    I WANT ONE....AND I WANT IT NOW
    3 Africa Twins/280,000 miles. If it's happened to one of mine, it's gonna happen to one of yours.....eventually.1 Varadero/62,000 miles ridden (of 85,000 miles on the bike), it's all still new to me! Not any more-now gone and replaced by a:2015 Versys 1000- 46,000 miles. What a wicked bike!!!!!!.

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    Yeah, me too. I haven't had any problems with the stock pump but it's only a matter of time...hope I get home tonight
    1984 XL600R & 2004 TDM900

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