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Thread: '91 MightyMax 6g72 4x4 v6 engine swap, HELP!!

  1. #1

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    honolulu, HI
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    1991 Mitsubishi Mighty Max
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    6G72

    '91 MightyMax 6g72 4x4 v6 engine swap, HELP!!

    Aloha, my mitsubishi mighty max needs an engine. it has a piston detached from piston rod. (loud Clank) ive been looking for a replacement engine of the same model but its proven hard to find. what are my option for putting another engine in it? i dont know crap about engines, a buddy of mine will help with install. but i need to know what engine will fit in existing mount and transmission. any input would be appreciated.

  2. #2

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    Richmond, CA
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    1989 Mitsubishi Mighty Max
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    G63B
    I think the diesel 4M40 and 4M41s will bolt in to the V6 mounts.

    By far the most sure fire, fewest headaches thing to do is rebuild your engine.
    I can help get your truck to pass California smog! PM me.
    California BAR Smog Inspector License #EO635469
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    See what I have for sale:
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  3. #3



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    see my other post for motor suggestions
    Pennyman1
    The best Dodge that Dodge never made
    Living the D-50 lifestyle since 1980

  4. #4

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    1991 Mitsubishi Mighty Max
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    I.D.K.?
    Similar vintage Monteros have the same engine. Should be direct bolt up. 6g74 and 6g75 should work, but I'm still learning myself.

    These damn 4x4 V6 MMs are just confusing as hell, as I've come to find out. Seems nobody seems to acknowledge their existence.

  5. #5

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    1991 Mitsubishi Mighty Max
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    6G72
    Quote Originally Posted by pennyman1 View Post
    see my other post for motor suggestions
    which post? couldnt find it.

  6. #6

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    1991 Mitsubishi Mighty Max
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    6G72
    Quote Originally Posted by VolvoMatt View Post
    Similar vintage Monteros have the same engine. Should be direct bolt up. 6g74 and 6g75 should work, but I'm still learning myself.

    These damn 4x4 V6 MMs are just confusing as hell, as I've come to find out. Seems nobody seems to acknowledge their existence.
    yeah what gives, MM are such a sick truck. im in hawaii so this is a rarity forsure. every truck u see here is either nissan or toyota or mazda

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