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Thread: 2.0 to 2.6 engine swap questions

  1. #1

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    03-23-2014
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    van alstyne, tx
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    1986 Mitsubishi Mighty Max
    Engine

    G63B

    2.0 to 2.6 engine swap questions

    Has anyone swapped out from 2.0 to 2.6 engine with manual transmission in 1986 Mighty Max? I am at my wits end with pulling and repairing the 2.0 aluminum head.

    What other engine has anyone put in the 86 mighty Max?

  2. #2

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    Adelaide, South Australia
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    1985 Mitsubishi L200
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    G63B
    For 4 cylinder engines the Mitsubishi had the following - 4G32, 4G52, 4G54 (G54B/4G54B/4G54) G63B, 4G64. The 2.0 and 2.6 are different transmission mounting bolt patterns (2 litre is narrow, 2.6 is wide) What grief are you having with the G63B? There were inherent design flaws with the G63B, but it didn't suffer from head failures like the 2.6 (main issue with the G63B is oil flow)
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  3. #3

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    van alstyne, tx
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    1986 Mitsubishi Mighty Max
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    G63B
    My dad bought the truck new and had the head off and rebuilt along with rings at about 40,000.

    I inherited the truck when he passed and have been keeping it going over the years. The #3 cylinder had valve seat problems three times since then. Last year I put a new forklift head on it and it’s gone about a year and now #1 cylinder is dead. I haven’t torn into it yet, but it’s definitely a head/valve issue and I’m done with this engine. I am an expert at pulling and replacing this shitty aluminum head.

  4. #4

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    van alstyne, tx
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    1986 Mitsubishi Mighty Max
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    G63B
    Has anyone done an aluminum block V-6 and transmission mod?

  5. #5

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    Adelaide, South Australia
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    1985 Mitsubishi L200
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    G63B
    What is the oil pressure like? If the balance shaft bearings are toast it will cause a pressure drop to the head and the primary location of failure will be #1 cylinder big end and main bearings. The G63B heads are scant on oil pressure feed so when they experience a catastrophic oil pressure failure, it'll eat the cam journals and cam bearing faces, then the forward end of the crank will seize. Ain't pretty, but totally avoidable.
    support the forum that supports you - join and donate to MightyRam50.Net today! donations unlock the edit function

  6. #6

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    1987 Dodge Power Ram 50
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    Dodge V6
    Wasnt there a narrow block 2.6L? Unless even there the dimensions arent the same. Just get a tranny and the engine to boot. I have a KM132 I can pull and sell you. I am doing a 2.6 -> 2.6 swap (82 -> 87) and I have the tranny ready to come out if you want it. Make me an offer, it has 50ish k miles on it (original to truck too)

  7. #7

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    1987 Dodge Power Ram 50
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    Dodge V6
    Here it is, I knew I had a photo


    Screenshot_20200127-190347_Messages.jpg

  8. #8




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    Pittsburgh, PA
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    1980 Dodge D-50
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    G54B
    the 2.6 auto trucks up to and including 1986 were narrow block motors - flywheel bolts right up to it.
    Pennyman1
    The best Dodge that Dodge never made
    Living the D-50 lifestyle since 1980

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