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XJ700 *EFI* The holy sh*t it is fast now mod!

Discussion in 'XJ Modifications' started by gennro, Jan 2, 2011.

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  1. gennro

    gennro Member

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    Re: 85 XJ700 Fuel Injection Build

    UPDATE!!!!!!!!!!!!!!

    Alright received the fuel pump and microsquirt today.

    Also received my valve cover gasket from chacal!

    So I mounted the fuel pump in I think is a great place for it.

    The microsquirt is fitted up under the tank and I laid the wires out and just figuring out where everything is going to be placed.

    I made a few plug wires. I found a trick is to heat the boot up with a heatgun to get the wire through easier.

    So a few steps getting closer to firing this engine up.

    [​IMG]

    420a coil pack with summit 8mm wires I made.
    [​IMG]

    Fuel pump way down there.
    [​IMG]

    [​IMG]

    Microsquirt!
    [​IMG]
     
    gennro, Jan 18, 2011
    #21
  2. cutlass79500

    cutlass79500 Well-Known Member

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    Re: 85 XJ700 Fuel Injection Build

    Shouldn't be long now. Cant wait to hear how it turns out
     
    cutlass79500, Jan 19, 2011
    #22
  3. venlis

    venlis Member

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    Re: 85 XJ700 Fuel Injection Build

    very nice work im following this closely!

    best of luck on the project! though it seems you dont need that much :)
     
    venlis, Jan 19, 2011
    #23
  4. infamousalias99

    infamousalias99 Member

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    Re: 85 XJ700 Fuel Injection Build

    what year gsxr did those come off of, im doing the same thing to a 750 for my senior design project?
     
    infamousalias99, Jan 19, 2011
    #24
  5. gennro

    gennro Member

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    Re: 85 XJ700 Fuel Injection Build

    2003 GSXR 600
     
    gennro, Jan 19, 2011
    #25
  6. infamousalias99

    infamousalias99 Member

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    Re: 85 XJ700 Fuel Injection Build

    good deal, we are about to start assembly pretty soon, after i get everything dialed in, im hoping to get a turbo on it as well.
     
    infamousalias99, Jan 19, 2011
    #26
  7. infamousalias99

    infamousalias99 Member

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    Re: 85 XJ700 Fuel Injection Build

    could you take some more pictures of your ignition system and what components you used? thats the only area right now thats giving me trouble
     
    infamousalias99, Jan 19, 2011
    #27
  8. gennro

    gennro Member

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    Re: 85 XJ700 Fuel Injection Build

    Well really not much pictures for the ignition system. just a coil and trigger wheel.

    I'll be using a 420A ignition coil (dodge neon coil, very reliable coil).
    Along with a 3" 36-1 trigger wheel using one of the stock VR (variable reluctor) sensors. The trigger wheel will be mounted in the location of the stock trigger wheel.

    If you have anymore questions just ask. If you have a lot of questions PM me or keep them to one post if you don't mind. I would like to keep my build thread on track.
     
    gennro, Jan 19, 2011
    #28
  9. schooter

    schooter Active Member

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    Re: 85 XJ700 Fuel Injection Build

    this.is.epic!!!
     
    schooter, Jan 19, 2011
    #29
  10. gennro

    gennro Member

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    Re: 85 XJ700 Fuel Injection Build

    It runs.

    Now you will have to wait for a update.......
     
    gennro, Jan 24, 2011
    #30
  11. cutlass79500

    cutlass79500 Well-Known Member

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    Re: 85 XJ700 Fuel Injection Build

    that's a good sign now all the fine tuning looking forward to the update
     
    cutlass79500, Jan 24, 2011
    #31
  12. Hasersys

    Hasersys Member

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    Hasersys, Jan 24, 2011
    #32
  13. gennro

    gennro Member

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    Re: 85 XJ700 Fuel Injection Build

    Yeah the updates will be coming a bit slow over the next week due to work schedule.

    But the engine screams! Revs way faster then it did with the carbs.
     
    gennro, Jan 25, 2011
    #33
  14. darkfibre

    darkfibre Member

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    Re: 85 XJ700 Fuel Injection Build

    Looking great.

    Can I ask why you chose the GSX throttle bodies in particular?
    My 750 has 32mm throttle bodies (28 if you consider the venturi restriction).
    The GSXR600 is 38mm or so? Considering the valve and port size wouldn't getting a perfectly smooth tune on very small to medium throttle openings be a compromise?

    I am doing a similar project, and have an R6 throttle setup that I bought for the injectors, but will be staying with a smaller dia throttle body set up.

    What fuel pump have you decided to run with? The lowest current draw I can find to do the job still uses close to 6 amps.
     
    darkfibre, Jan 27, 2011
    #34
  15. schooter

    schooter Active Member

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    Re: 85 XJ700 Fuel Injection Build

    couple q's.. how much did it cost, and how much would you charge for a pretty much all the work done package? would love this on my bike...
     
    schooter, Jan 27, 2011
    #35
  16. Alive

    Alive Active Member

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    Re: 85 XJ700 Fuel Injection Build

    Stunning.. Thanks for sharing. Great work

    Any chance if some indication of costs?

    Thanks
     
    Alive, Jan 27, 2011
    #36
  17. zap2504

    zap2504 Member

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    Re: 85 XJ700 Fuel Injection Build

    ...and a DIY step-by-step including complete part descriptions would be cool too!
     
    zap2504, Jan 27, 2011
    #37
  18. Alive

    Alive Active Member

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    Re: 85 XJ700 Fuel Injection Build

    I'd love to do this to a 900 but I don't have the budget or time to make it happen
     
    Alive, Jan 27, 2011
    #38
  19. gennro

    gennro Member

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    Re: 85 XJ700 Fuel Injection Build

    Once I have this all done I'll put a lot more details up.

    The reason I used GSXR 600 TBs is they are a direct fit and easy to make work.

    Fuel pump is off a 675cc 2009 Honda Rincon.

    The fuel injection side of things is around 1000 dollars to do. This all depends on what you can find at the time. This would be a bit tough to do as a kit or ready to install due to the fact of the some of the modifications done.

    I had it running till the microsquirt failed. The engine revved extremely fast way faster and much more responsive then the carbs ever could.
     
    gennro, Jan 27, 2011
    #39
  20. Maxim-X

    Maxim-X Well-Known Member

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    Re: 85 XJ700 Fuel Injection Build

    When you say this, do you mean that the idle was faster than with carbs?
    Do you think that it revving up faster due to better response from the fuelly mod that it may be harder on the clutch action and modding to a heavier clutch might be needed?
    Nicely documented build to this point, nice work!
     
    Maxim-X, Jan 27, 2011
    #40
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