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Thread: Rebuilding my 2.6L to a 2.9L

  1. #1

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    04-15-2011
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    7
    Location

    NC
    Vehicle

    1982 Dodge Power Ram 50
    Engine

    G54B

    Rebuilding my 2.6L to a 2.9L

    I am not a good poster but some of you have probably seen my posts on other D-50 / Ram-50 sites.
    Anyway, I've been building / tearing down these trucks for MANY years. . . .
    I am NOT an expert, but have been able to provide historical information / parts to other forum members in need.
    My love affair w/ the Mitsu 2.6L, don't EVEN ask me what that is about. . . . . .

    Bottom end:
    So, I got a 2.6L Turbo block, bored it 0.100" over, (3.69"), built a stroker crank, (4.11" stroke).
    This equates to 2.88L or in industry terms, 2.9L.
    The turbo block includes the piston coolers, very helpful since I have stepped domed Venolia forged pistons. 10.9:1 static compression. 220psi per cylinder, yet running 89 octane w/ the piston coolers.

    Top end:
    Marnal head, (Spanish built 2V head), (some of you might remember the group buy I did, about 10 years ago).
    Manley valves: 48mm intake, (w/OS valve seats) / 38.5 exhaust valves.
    Ported intake, exhaust polished.
    Mitsubishi 3.0L V6 rockers, 1.6:1 ratio, hrdraulic rollers.
    RPW, (Australia), roller cam/ .530" lift / .295 Dur. + Head Gasket @ 0.100" OB, ($1,000.00 FREAKING US DOLLARS !!!!!)

    Ignition:
    Kill the stock distributor!!!!!
    Electromotive dual coil-pack
    More to come . . . . . .

  2. #2



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    07-24-2012
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    2,357
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    Washington State
    Vehicle

    1986 Mitsubishi Mighty Max
    Engine

    G63B
    Lets see, could a V8 of cost less for you. Sometimes when I sit down I still feel a little pain from kicking myself on that decision.

  3. #3

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    04-24-2011
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    Orlando, FL
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    1990 Mitsubishi Mighty Max
    Engine

    G64B
    it depends on what v8 a ls1 or a mod motor would be 2 or 3 times as much if you did aftermarket heads, but a regular small block chevy,or small ford or mopar 318,360 would the same price or cheaper if you used stock heads

  4. #4

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    04-15-2011
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    Location

    NC
    Vehicle

    1982 Dodge Power Ram 50
    Engine

    G54B
    Of course a V8 would be cheaper, but anyone can do that. . .
    Some of the parts, like the side-draft Mikunis, came off my '78 Colt & I wanted to keep them, so I built an engine around them.
    To build a V8 w/ this type of throttle response would not have been cheap, (much more powerful) but not cheap.
    Since it's a 4WD, I wanted to keep the weight balance relatively stock, (for off-roading), & I wanted quick, rather than fast.
    Even w/ the long stoke the throttle response is instantaneous.

  5. #5

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    04-24-2011
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    305
    Location

    Orlando, FL
    Vehicle

    1990 Mitsubishi Mighty Max
    Engine

    G64B
    do you have pictures of your engine

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