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Thread: Repair? Rebuild? Or Replace 1988/89 2.6 L Power Ram 50 4X4 MT

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  1. #1

    Array
    Status
    Offline
    Join Date
    04-09-2016
    Posts
    47
    Location

    VA
    Vehicle

    1988 Mitsubishi Mighty Max
    Engine

    G54B

    Repair? Rebuild? Or Replace 1988/89 2.6 L Power Ram 50 4X4 MT

    200K+ miles, The old boy is struggling, It runs like the proverbial...

    My main questions Are:

    1. Should I pay 1700 and just get a 'new' motor and call it a day?
    2. Should I have the machine shoppe do this head job and Pray to Carb that All is well?
    3. Can I swap a more powerful Later year MightyMax/Ram50 motor in to the frame an mount it up to the 4x4 Trans? Getting the best of both worlds with a new Engine and New Power (Can a 90's era V6 4x4 fit in to an 89' 4x4?)


    I mean the truck is an absolute bad ass. So I want to keep it as long as I walk this Earth.
    I appropriate any feedback and guidance on this matter. - Thank You All!

    Original Plan
    I think I have burn exhaust values and was planing to have the machine shoppe fix all that to see if if the Truck gets back its strength and puts out another 200k miles..

    The Value and Head job is 700$ installed which I think is fair (I could do this myself but I have way too many project going so ...)

    Issues
    Backfiring
    No Power
    The Truck Bleeds Oil like its been stabbed in the belly (poor thing)
    I can hear coolant bubbling into the overflow after a drive
    Engine Sounds Rough
    Needs a new Exhaust system as everything past the cat has rusted through
    (That was next on the to-do list before the other issues started)

    Background (long)
    Installed /Low Psi Epump and weber carb
    Installed New Plugs New Wires New Distributor
    Installed New Starter

    The truck drove tops for a good while until it started to whistle.. turn out I need to
    apply Thread lock to the carb bolts... so it started to leak air. I had been driving it a while like this because I
    could not figure it out. Until one day it decided to not start.

    I replaced the Plug wires and Distributor after I fixed the Carb because the truck was now very
    low on power.

    It starting backfiring violently through the carb so much so it has burned a hole thru the air filter foam.
    The back fire stops when the engine comes up to full temp (I fear in the winter time this process will be brutal if not addressed)

    It's getting harder to start as the starts are weak... almost like starting an prop driven airplane... it just stumbles as the starter spins it to life and then weakly fires. As stated it backfires through the carb and has no power until the engine comes up to operating temps.

    After that 60mph to 65mph (and that's pushing it) is my max speed available (That may be gearing limits though)
    Hills are a struggle without some creative gear shift action. The Truck is dying.


    Added the pics here as well:
    Last edited by Soular; 10-03-2020 at 06:35 AM.

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