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cj2a rebuild

Discussion in 'Flat Fender Tech' started by REDCRO, Sep 26, 2005.

  1. Sep 26, 2005
    REDCRO

    REDCRO New Member

    poplar bluff...
    Joined:
    Sep 20, 2005
    Messages:
    20
    I plan on a resto mod type rebuild to make my jeep more enjoyable.

    d30 front (cj5)
    d44 rear (scout)
    2.8L (engine ran good, ought to work fine in a 2400lbs rig)
    th350 ( no more rigging clutch linkages)
    d20 (to work with d44 have both of those now)
    probably a scout II steering box conversion.

    any sugestions or insight/experinces with your own builds
     
  2. Sep 26, 2005
    BlueFlu

    BlueFlu past owner of some ecj5's

    Hermitage, TN
    Joined:
    Jan 21, 2004
    Messages:
    1,552
    Is that the GM 2.8 they put in XJs and Blazers?
    Not sure any adapters are made for it. The 4.3 GM or a Buick V6 would be easeir.
    Also I think the auto trans would make the rear drive shaft to short. Thats just me though. ;)
     
  3. Sep 26, 2005
    REDCRO

    REDCRO New Member

    poplar bluff...
    Joined:
    Sep 20, 2005
    Messages:
    20
    dont 2.5Ls from s10 get put into jeeps alot?2.8v6 shares the same belhousing as a 2.5L
     
  4. Sep 26, 2005
    BlueFlu

    BlueFlu past owner of some ecj5's

    Hermitage, TN
    Joined:
    Jan 21, 2004
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    1,552
    The 2.5 in the later Jeeps is an AMC engine I think.
    The 2.3 Ford is a good swap if you want to stick with a 4 cyl.



    Edit: Brain fart, they used the Iron Duke 151 in the later CJs.
     
  5. Sep 28, 2005
    REDCRO

    REDCRO New Member

    poplar bluff...
    Joined:
    Sep 20, 2005
    Messages:
    20
    whoo hoo, the old l-134 finaly came alive last night so as long as it can run I will keep it. I still plan on putting the d30 and d44 diffs along with the d20 if it will swap over without problems. does anyone offer a mastercyl. that will work the brakes on those two axles?
     
  6. Sep 28, 2005
    sparky

    sparky Sandgroper Staff Member Founder

    Perth, WA
    Joined:
    Sep 20, 2002
    Messages:
    9,221
    You're stock MC will work.
     
  7. Sep 28, 2005
    Mcruff

    Mcruff Earlycj5 Machinist

    Albertville, AL
    Joined:
    Sep 22, 2002
    Messages:
    5,349
    So long as the fronts don't have disk brakes.

    The auto is gonna make a very short rear driveshaft, if it was me I would leave the manual and fix the clutch linkage right, obviously something is wrong if you're having that much trouble.
    The Scout axle is gonna be wide compared to the factory axle under the flattie, nothing wrong with that just wanted to make you aware, and make sure the cj dana 30 width matches the Scout rear within reason along with the gear ratios.
     
  8. Sep 28, 2005
    sparky

    sparky Sandgroper Staff Member Founder

    Perth, WA
    Joined:
    Sep 20, 2002
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    :? none of the writeups that I've looked at say anything about that. I didn't think it was an issue or am I just not remembering something I should have?
     
  9. Sep 28, 2005
    REDCRO

    REDCRO New Member

    poplar bluff...
    Joined:
    Sep 20, 2005
    Messages:
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    whats wrong with my clutch? it seems to work fine to me. Can you get 538's for a d30/d44? I would like to keep my stock motor and tranny as long as they will work. I want disc brakes with a stronger front axle along with a strong enough rear axle that will also stop my rig. would like to stay with 31's but 33 maybe callin me.
     
  10. Sep 28, 2005
    Mcruff

    Mcruff Earlycj5 Machinist

    Albertville, AL
    Joined:
    Sep 22, 2002
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    5,349
    I don't know you're the one that mentioned rigging clutch linkage.;)
    Stock master cylinder on a 2a is not gonna push enough volume to operate disks Sparky, heck a dual reservoir won't unless its hooked up right, remember me and Joes deal with our stock dual chamber cylinders and the lines being plumbed backwards from the factory.
    Dana 44's are availbale factory with 5.38's so yea you can get them, don't know if 5.38's are available for the dana 30 but you can check randy's ring and pinion, I would think they are though.
     
  11. Sep 28, 2005
    jpflat2a

    jpflat2a what's that noise?

    Hermosa, SD
    Joined:
    Jul 30, 2003
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    8,513
    I've got discs on my D25
    stock 2A m/cyl
    stops on a dime, no issues
     
  12. Sep 28, 2005
    Glenn

    Glenn Kinda grumpy old man Staff Member

    Apopka, Fl
    Joined:
    Sep 21, 2002
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    12,367
    Discs on the front of my 3B, stock master cylinder, stops fine. :hurrican:
     
  13. Sep 28, 2005
    Mcruff

    Mcruff Earlycj5 Machinist

    Albertville, AL
    Joined:
    Sep 22, 2002
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    5,349
    Strange I figured since all the stock dual reservoirs had problems with the disks that the little single reservoir would not be up to the task, especially since there smaller than the factory dual unit.
     
  14. Sep 29, 2005
    michigan_pinstripes

    michigan_pinstripes I'm not lost, I'm wandering

    Clarkston MI...
    Joined:
    Aug 20, 2003
    Messages:
    605
    I know the trick with discs is the diameter of the lines. alot smaller than drum lines.
     
  15. Sep 29, 2005
    Grandpa Jeep

    Grandpa Jeep Member

    Peyton, CO
    Joined:
    Oct 24, 2003
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    169
    Yes you can. I am running 5.38s in my D30/D44.

    As someone else mentioned, the Scout II rear end is going to be wider, like 8" wider. Going to look awfully strange with a narrow CJ D30 front end. If I were you, I would either go with a matching Scout II front end or find a CJ D44 rear end. A D44 out of a '72 - '75 CJ would be the right width, right bolt pattern, have a centered pumpkin for your D20 and have the one piece axle shafts just like the Scout II rear. I think the spring pads even line up.
     
  16. Sep 29, 2005
    REDCRO

    REDCRO New Member

    poplar bluff...
    Joined:
    Sep 20, 2005
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    Does anybody that runs 5.38's in d30/d44 combo with the stock motor and tranny use larger tires?

    can the 134 pull larger tires and power steering?
     
  17. Sep 29, 2005
    Mcruff

    Mcruff Earlycj5 Machinist

    Albertville, AL
    Joined:
    Sep 22, 2002
    Messages:
    5,349
    Virtually all the F head 4 cylinders on this board run 5.38 gears as it was pretty much the stock setup, find the user Blevisay (Billy) on here his jeep Animal is an F-head running 5.38's and 34" tires and he drives it fine, now most of the guys don't have power steering, even if they have converted to a saginaw setup, its just something that on the F-head has to be totally fabbed up while the V6 models can rob mounting brackets from more modern Buick V6's, if you look around there has been alot of talk about power steering on an F&L heads and few that have done it.

    Oh by the way fill out your profile and let us know where you're at, ther might be a member close by.;)

    Edit: forgot you're probably running an L-head look up Steve Lanes little yellow flattie, he runs saginaw manual and like 31-32" tires, his user name is (w3srl).
    [​IMG]
    You can also check out (michiganpinstripes) his Jeep putt putt runs lifted on larger tires.
    [​IMG]
     
  18. Sep 29, 2005
    REDCRO

    REDCRO New Member

    poplar bluff...
    Joined:
    Sep 20, 2005
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    I run an L-134. I would prefer to use a manual steering box but old stuff is getting harder and harder to find. The other day I called 12 junkyards looking for a 350 chevy I found 1. Anyway I have a scout frame sitting behind my barn and have seen a guy use that steering box and I like that set up. I may just find a stock steering box for my rig.
     
  19. Sep 29, 2005
    Mcruff

    Mcruff Earlycj5 Machinist

    Albertville, AL
    Joined:
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    Messages:
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    Sent you a private message!
     
  20. Sep 29, 2005
    BlueFlu

    BlueFlu past owner of some ecj5's

    Hermitage, TN
    Joined:
    Jan 21, 2004
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    1,552
    My 5 had 4.27s with an F head. It had 31s on it and did fine.
    I'm going 30/44 with 5.38s and a V6 now.
    www.ringpinion.com has 5.38s for the D30.
     
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