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Thread: LQ9/TH400 swap into CJ5

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    LQ9/TH400 swap into CJ5

    Doing a little forced modernization on my CJ.

    The reason:


    The process:






    Next big process is getting the engine wiring converted to stand-alone harness. Lots of info on various websites, but if anyone has done it here, would appreciate any tips/tricks.

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    LQ9/TH400 swap into CJ5

    Lt1swap.com had all the wiring schematics, used that site and do all my wiring myself and it was very simple.

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    PondSkum's Avatar
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    Looks good so far! Can't wait to see it on the trails!
    2001 TJ - PondSkum
    Build in progress....

    "The wisest mind has something yet to learn." ~ George Santayana

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    Wiring harness before:

    Wiring harness after:

    Engine in Jeep. This thing is tight. Had to order a smaller PS pulley (which i wanted to do anyways).


    Working on the little things now.

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    Difference in PS pulleys: Bottom is stock LQ9, middle is Vbelt PSC pulley, and top is new pulley. Should help my low speed steering quite a bit.



    Wire harness all cleaned up:


    Trying to determine where to mount my fuel system. Consists of pre filter, pump, filter, then regulator.

    3 choices:
    Under rear of jeep, directly below fuel tank. In the future I plan to add a suck down winch in this area as well

    In the drivers wheel well:

    Or under the drivers seat:


    Thoughts?

    What's left:
    install harness and PCM
    Move Battery Mount
    Move Steering Resevior
    Exhuast
    Intake and MAF
    Cooling hoses
    Rebuild and adapt TH400 to Dana 300
    New crossmember

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    So I kinda forgot about the thread...sorry.
    Lots of picture updates

    Corvette manifolds are center dump and much easier to route than the stock LQ9


    Fuel System (still needed one hose in photo)

    Spacer needed to mount TH400 behind LQ9

    air intake, wires everywhere

    Difference in pedals, Metal one is from 04-06 truck. Make sure you match the module to your engine. I tried using the 07 (engine is 05)...it'll work, sort of. Mine lost communication on hard throttles.

    Console

    Very tight clearances

    Front Driveshaft

    Again, Very tight


    Ended up going FMRVB on the TH400 with a 2200 rpm stall. Shakedown run this weekend, otherwise I hope to see some of you soon.

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