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New jeep need some help

Discussion in 'Early CJ5 and CJ6 Tech' started by Homebrew, Jan 21, 2009.

  1. Homebrew

    Homebrew New Member

    Hello All I am new to the CJ world I just aquired a 1956 M38A1 that I got in trade for a jeep cherokee. It needs work to be street driveable. One thing that I would like to do is increase the size of the gas tank. The tank is mounted under the driver seat and is only 8 gallons, is there a way to mount a larger CJ5 tank in its place? Here's a picture of my new project. Thanks for the help.
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  2. ib4classics

    ib4classics Member

    Re: Neew jeep need some help

    Welcome, looks like you have a good start. Check the threads under search, you will find pctures etc. on a later rear tank conversion.
     
  3. aallison

    aallison 74 cj6, 76 cj5. Has anyone seen my screwdriver?

    Re: Neew jeep need some help

    Nice looking cj. GOt more picts?
     
  4. Desert Runner

    Desert Runner Member 2024 Sponsor 2022 Sponsor

    Re: Neew jeep need some help

    X2 and Welcome, there was also a thread by someone that Made a tank, that filled the space under both seats. (That was all Fab work,) Just a thought, I put the Std 15 gal tank in the rear of my 65 CJ5.

    Again Welcome from Western Pa

    Jay
     
  5. 1960willyscj5

    1960willyscj5 Well-Known Member

    Re: Neew jeep need some help

    I thought the M38A1 had a 15 gallon tank under the seat.
    Am I wrong?
     
  6. Joe 69cj5

    Joe 69cj5 Going into Retirement

    Re: Neew jeep need some help

    Welcome from Southern California. Thats the next project on mine also.
     
    Last edited: Jan 22, 2009
  7. timgr

    timgr We stand on the shoulders of giants. 2022 Sponsor

    The CJ under-seat tank is 11 gallons. The M38A1 tank is more ... 15 gal sounds about right.

    If you have a CJ tank (looks like that from the filler neck) it's 11 gal, not 8. If you have something else, the CJ tank would increase your capacity by some. M38A1 tanks have a different filler neck (big cap, big neck) and may be hard to source.

    You can put a rear mounted tank from a later Jeep in, but you'll lose the daigonals from the rear crossmember and (I expect) the iconic M38A1 machine gun mount under the rear floor. Here's an article by one of the long-time members her: http://www.boyink.com/splaat/ssdutch-comments/gas-tank-installing-rear/
     
  8. Homebrew2

    Homebrew2 Member

    Scratch 'n' dent 'A1 tanks appear on eBay occasionally. I got a new MD Juan tank when my orig sprung leaks.
     
  9. Wmi68CJ5

    Wmi68CJ5 Let the Sun Shine!

    Is that a flanged rear I see?
     
  10. Homebrew

    Homebrew New Member

    So the gas tank should be at least 11 and as much as 15? I can live with either, I'll post more pictures when I get home from work.
     
  11. Don X

    Don X The Prodigal Moderator Staff Member 2023 Sponsor

    A repro tank is not very hard to find on the web but not cheap compared to a CJ5 tank. If you really look you can find an NOS tank but will pay and arm and a leg for it. I thought the tank was 17 gallon? If I think about it I'll check my ops manual tonight.
     
  12. 53A1

    53A1 Member

    The M38A1 tank should have the larger sump that occupies the recess in the driver’s side floor underneath the driver's seat. If the tank doesn't fill that area it's not an M38A1 tank.
     
  13. Homebrew

    Homebrew New Member

    The first 3 pictures are of the tank, There is space enough for me to get my fingers inbetween the tank and the floor board. I assume that mean I do not have the correct tank?
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    And here are some before pictures, I am in the process right now of stripping off all the paint and fixing the brakes.
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  14. Homebrew

    Homebrew New Member

    Here's a picture of the tank
    [​IMG]
     
  15. sparky

    sparky Sandgroper Staff Member Founder

    As previously noted, it's a CJ-5 tank, discernible by the small filler neck, now with more pics as you surmised you can fit your fingers beneath it, it's not the stock tank, but it's not 8 gallons either.

    Looks like a good starting point!
     
  16. Homebrew

    Homebrew New Member

    Ok so today I started on the brakes, I had to make a brake pedal, the one that was on there was someones hack job and wouldn't allow for full pedal travel. Tomorrow I will finish replacing the wheel cylinders. I would like to add power brakes Is there a write up that shows how to move the MC up to the fire wall? I know I will need to redo the brake pedal and bring the brake lines up, what else is involved?
     
  17. Homebrew

    Homebrew New Member

    Also looking to widen the stance a bit thinking cheapest way would be wheels with a different offset. Anyone have any recommendations? I found these on JC whitney but they are only 15x8 and 3.75 BS. Thinking a 15x10 inch wheel would be a better option for my setup.
    http://www.jcwhitney.com/BLACK-STEEL-WHEELS/GP_2011848_N_111+1960+200004012+600008275_10108.jcw

    Thanks for the help.
    P.S. got the brakes fixed today :) what a difference clean brake fluid and some new wheel cylinders make.