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HEI old topic, new question

Discussion in 'Early CJ5 and CJ6 Tech' started by dauntless_powered, Nov 10, 2004.

  1. Nov 10, 2004
    dauntless_powered

    dauntless_powered SUB COB 2024 Sponsor

    Groton, CT
    Joined:
    Nov 3, 2003
    Messages:
    1,000,081
    I have recieved my HEI dist from mruta and is there anything other than having to get 8mm hei wires and following the instructions from cape conversions that i should know about?? thanks in advance
     
  2. Nov 10, 2004
    Project71-5

    Project71-5 BACON

    Gypsum, CO
    Joined:
    Sep 24, 2002
    Messages:
    897
    Should drop right in. Besides the new wires, you can gap the plugs to about .045. IIRC some even go wider than that.

    As for the timing, I just put my HEI back in Monday night and it seems to run good at 10* advance at idle. I did not put an adjustable vacuum advance on it or new centrifugal advance weights.
     
  3. Nov 10, 2004
    Mcruff

    Mcruff Earlycj5 Machinist

    Albertville, AL
    Joined:
    Sep 22, 2002
    Messages:
    5,349
    Joe, just remember if your motor starts to run to warm that to much total advance will cause this problem.
     
  4. Nov 10, 2004
    JK67CJ5TX

    JK67CJ5TX Member

    El Paso, Texas
    Joined:
    Oct 24, 2003
    Messages:
    81
    Some of us have had a little trouble getting the distributor to seat all the way down. This despite the trimming of the intake manifold and bolt replacement. I never figured why mine was so balky, but after several tries it went in. The beauty is you may never have to fool with it again! Read and follow Capes directions carefully. They work.

    JK
     
  5. Nov 24, 2004
    ronrw2b2

    ronrw2b2 New Member

    Ogden, Utah
    Joined:
    Nov 2, 2003
    Messages:
    12
    I installed an HEI with my 1982 231EF in my 71 CJ5. I had to use a allen head intake manifold bolt under the HEI to get it to fit. The salesman at the parts store where I purchased the HEI distributor suggested that I replace the original wire that connected to the distributor with a larger gauge, at least 12 gauge. The original wire seemed to be a 12 gauge so I didn't change it, however the first time I fired up the engine I noticed the resister on the firewall smoking so I removed it. I set the timeing to 14 BTDC. I haven't had it on the road yet but it seems to run very well.
     
  6. Nov 24, 2004
    sparky

    sparky Sandgroper Staff Member Founder

    Perth, WA
    Joined:
    Sep 20, 2002
    Messages:
    9,221
    Good point Ron.

    Remove or bypass the ballast resistor (a little ceramic thingy). The HEI needs a full 12V to function properly.
     
  7. Nov 25, 2004
    jzeber

    jzeber Well-Known Member 2022 Sponsor

    Morgan Hill, Ca
    Joined:
    Nov 15, 2003
    Messages:
    3,331
    Does anyone have a copy of the instructions from Capes? I bought my HEI off Ebay.
    Thanks
     
  8. Nov 25, 2004
    sparky

    sparky Sandgroper Staff Member Founder

    Perth, WA
    Joined:
    Sep 20, 2002
    Messages:
    9,221
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