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Buick 225 V6 or VW 4cyl diesel?

Discussion in 'Early CJ5 and CJ6 Tech' started by WKKlein, Jun 30, 2008.

  1. Jun 30, 2008
    WKKlein

    WKKlein New Member

    Uvalde, Texas
    Joined:
    Feb 2, 2008
    Messages:
    18
    Hey guys I've been trying to decide what engine to use in my '71 CJ-6 which currently has the factory installed Buick and was wondering what the benefits/ mileage are of this engine i see that it is pretty popular here. Also anyone done VW diesel swaps in their rigs? Thanks
     
    WKKlein, Jun 30, 2008
    #1
  2. Jun 30, 2008
    Dummy

    Dummy I kick hippies

    Escondido, CA
    Joined:
    Dec 5, 2004
    Messages:
    646
    Mine got 17-18mpg with the stock 4.88s, 31x10.50-15s on steel rims, and an NV3550 5-speed. A Warn or Saturn Overdrive would gain similar results.

    Engine was stock internals, K&N 7-inch open element air filter, fenderwell headers w/ dual 2.5-inch mufflers, and a DUI HEI distributor.

    I'd say keep the Buick. They're great engines.
     
    Dummy, Jun 30, 2008
    #2
  3. Jun 30, 2008
    ca51flatty

    ca51flatty I wheeled w Charlie Hazel

    SoCal
    Joined:
    Jan 19, 2004
    Messages:
    156

    X2 But if your really want the diesel then I get first dibs on your 225!
     
    ca51flatty, Jun 30, 2008
    #3
  4. Jun 30, 2008
    sparky

    sparky Sandgroper Staff Member Founder

    Perth, WA
    Joined:
    Sep 20, 2002
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    9,221
    X3, I've had both, just not both in a Jeep. Keep the 225. It's well suited for this vehicle.
     
    sparky, Jun 30, 2008
    #4
  5. Jun 30, 2008
    WKKlein

    WKKlein New Member

    Uvalde, Texas
    Joined:
    Feb 2, 2008
    Messages:
    18
    ok well how well does the Buick take fuel injection conversions. Im looking for descent mileage alternative to my dodge daily driver as well as a hunt/river rig.
     
    WKKlein, Jun 30, 2008
    #5
  6. Jul 1, 2008
    ca51flatty

    ca51flatty I wheeled w Charlie Hazel

    SoCal
    Joined:
    Jan 19, 2004
    Messages:
    156
    Do a search here for EFI. The short story is it is difficult at best to put EFI on an odd fire 225.
     
    ca51flatty, Jul 1, 2008
    #6
  7. Jul 1, 2008
    Ggg

    Ggg Member

    NW. IL
    Joined:
    May 15, 2008
    Messages:
    130
    Which VW diesel are you considering?
     
    Ggg, Jul 1, 2008
    #7
  8. Jul 1, 2008
    1960willyscj5

    1960willyscj5 Well-Known Member

    Mesa, Arizona
    Joined:
    Nov 27, 2006
    Messages:
    2,793
    The constant injection system that came on the '74 bug and rabbit and Dasher would work. Since it's constant velocity, it doesn't care if it is even or odd fire. R)
     
    1960willyscj5, Jul 1, 2008
    #8
  9. Jul 1, 2008
    DanStew

    DanStew Preowned Merkin salesman Staff Member

    Lexington, South...
    Joined:
    Sep 22, 2002
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    4,585
    OOOHHH this is a hard decision. With the 225 is already installed and you do not have to get anymore adapters. I really like the VW deisel and was pondering it for my old samurai. If you did the deisel, it would probably be best to probably run samurai tranny and Tcase with te deisel since i do not beleive there are any covnersion adapters made for the deisel to the T14, unles you use a differnt tranny. With the samurai Tacse you will ahve an offset for the rear axle so you wont have dirveshaft issues.
     
    DanStew, Jul 1, 2008
    #9
  10. Jul 1, 2008
    sparky

    sparky Sandgroper Staff Member Founder

    Perth, WA
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    Sep 20, 2002
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    FI isn't that difficult I don't think. I've considered it myself. But with the stock 2G some members here report getting upper teens for fuel economy.

    Holley Projection and Megasquirt both work on the 225.
     
    sparky, Jul 1, 2008
    #10
  11. Jul 1, 2008
    timgr

    timgr We stand on the shoulders of giants. 2022 Sponsor

    Medford Mass USA
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    Aug 10, 2003
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    IIRC the main fuel injection stumbling block with the odd-fire is that the GM TBI computer won't work because of the uneven firing. Most people sourcing junkyard parts take them from the GM TBI systems. That's just the computer that won't work though; you still use the GM throttle body and sensors with the Megasquirt computer. A couple of members here have done it IIRC.

    You should be able to find threads about this.
     
    timgr, Jul 1, 2008
    #11
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