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    Guest Message by DevFuse


    12v71 In A Mack Chassis:

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    5 replies to this topic

    #1 OFFLINE   Rob


      Bloated Dieselholic

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    • Location:Mack Paradise-Farmington, Illinois
    • Make:Mack
    • Model:A-40H, B-61T, B-61ST, B-67ST, B-61S, RL-797LST, RL-797LST, RL-755L, R795, R612ST
    • Year:1951 1957 1958 1962 1964 1973 1974 1978 1977 1980

    Posted 21 February 2006 - 10:41 PM

    I've got a 12V71TT that I removed from service on a genset. It currently is set at 580 hp @ 1800 rpm with twin turbochargers, and adaptable exhaust manifolds that I could turn around for truck use. My question is this, I'm wanting to install this into some sort of Mack chassis but I have no experience with diesel trucks other than a B model, so what chassis will allow enough clearance, and allow a large enough radiator for cooling? I plan to show and haul my B61 tandem tractor, and my AB dump most of the time, but the truck probably will not get much more use than this. I know this engine well as I had maintained it the last 20 years it was in service at work and it is sound. What do you think of an RTO 910 transmission behind this engine? I have one that I rebuilt a couple years ago and tested in a B61 (replaced with a triplex), awaiting some destination.
    Hope I don't annoy anyone with the questions as I've probably asked some of the same ones in the past but can't remember. Funny how the mind slows with age.


    Going through life knowing considerably more about nothing than the next person.

    Raining on your parade

    #2 OFFLINE   brutus998


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    • Location:SE Ohio
    • Make:Mack
    • Model:Superliner
    • Year:1980

    Posted 21 February 2006 - 11:05 PM

    I know that the 12v detroit can fit in a Superliner... Fred Sanders from Ravenna oh has a pulling truck called the Silver Bullet and it is a superliner with a 12v with an allison auto behind it

    #3 OFFLINE   Superdog


      BMT Certified Know-It-All!

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    • Location:Iowa
    • Make:Mack (165 at last count)
    • Model:AC to Superliner
    • Year:1921 to 1988

    Posted 21 February 2006 - 11:19 PM

    The 12V71 was available in RL/RS700's and FL/FS700's,model code was 771,example,RS771LST.Don't know about the fit of the twin turbo's though.I think I would go a little heavier duty than a 910 tranny,at least a 12513,14613 would probably be best.

    #4 OFFLINE   brutus998


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    • Location:SE Ohio
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    • Model:Superliner
    • Year:1980

    Posted 21 February 2006 - 11:35 PM

    Thats what I was thinking you would need a 13 speed to keep those rpms wound

    #5 OFFLINE   Freightrain


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    • Location:Ohio
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    • Year:59

    Posted 22 February 2006 - 10:27 AM

    A 5x4 would be pretty cool!!!


    1959 B61 Liv'n Large......................


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    #6 OFFLINE   roadusercharges



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    • Location:Christchurch , New Zealand
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    • Model:superliner
    • Year:1986

    Posted 22 February 2006 - 07:56 PM

    We had a similar genset engine here that ended up repowering a KW that had a 12v71 originaly, the blowers didnt present any real problems, it would have looked cool, with the exhaust pipes exiting the side panels though.
    nig :chili:

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