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HEI distributor cap #1 terminal

Discussion in 'Early CJ5 and CJ6 Tech' started by homersdog, Dec 13, 2014.

  1. Dec 13, 2014
    homersdog

    homersdog Tulsa, Ok Sponsor 2019 Sponsor

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    Hello All,

    I have looked at the previous threads about the HEI distributor conversion, but I have not found a way to make sure of the #1 terminal. I found a web page called "HEI exposed" which has this photo of the underside of the cap and a verbal instruction. It says #1 is at 12:00 o'clock here and then #2, #3, etc, but it does not say if that is going around clockwise or CCW as shown in the picture.

    So I took a guess- I added numbers to the photo shown here, but can anyone here confirm that I have the terminals in this photo numbered correctly?

    Thanks!
    Grant

    I plan on swapping the distributor out over Christmas, so I will take photos as I go and post a thread just for another record of the process.

    [​IMG]
     
    Last edited by a moderator: Aug 5, 2016
  2. Dec 13, 2014
    47v6

    47v6 junk wrecker! Sponsor

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    looks to rotate clockwise. set #1 at TDC and go round the cap putting wires in respective positions
     
    Last edited: Dec 13, 2014
  3. Dec 13, 2014
    47v6

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  4. Dec 14, 2014
    Posimoto

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    Here's some more info for you:
    HEI's EXPOSED

    where does #1 go( said in a austin powers voice)

    I think your assumption that you can use any of the three you have numbered is incorrect. Because of the different tab lengths on the various terminals there is a specific set that you can use for #1. It's been too long since I did mine, but the info is in the articles.
     
    Last edited by a moderator: Aug 5, 2016
  5. Dec 15, 2014
    47v6

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    I looked at my distributor and it was set wrong. wrong #1 on the cap. I pulled the distributor and used the above instructions with some other search information. It ran ok before, now it runs amazing. Pull off and plug the vacuum advance hose, set to 8~10 degrees BTDC with timing light. When you plug the vacuum line back in it will have 30 to 40 degrees advance. go do burn outs.
     
    Last edited: Dec 15, 2014
  6. Dec 15, 2014
    homersdog

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    Thank you for the replies!
    be careful about too much advance, you can burn your valves. You can put in an adjustable vacuum advance to bring it back a little.

    I cant wait to get my hei installed!
     
  7. Dec 17, 2014
    Warloch

    Warloch Did you say Flattie??? Staff Member Sponsor

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    Last edited by a moderator: Aug 5, 2016
  8. Dec 18, 2014
    Scruffy

    Scruffy New Member

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    My 71 is set up and looks just like the picture Warloch posted. I dont have much exp. with the 225 yet but I've done a lot of small block chevys. Chevy HEI has allways had #1 just to the left of the battery plug then goes around clockwise. And its allways easier for me to work at it from above, cause that's how you allways see it.
     
  9. Dec 18, 2014
    Scruffy

    Scruffy New Member

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    My 71 is set up and looks just like the picture Warloch posted. I dont have much exp. with the 225 yet but I've done a lot of small block chevys. Chevy HEI has allways had #1 just to the left of the battery plug then goes around clockwise. And its allways easier for me to work at it from above, cause that's how you allways see it.
     
  10. Dec 18, 2014
    homersdog

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    Thanks For all the replies! I've got it figured out now, just need to find time to get it all installed. Warloch's picture was a big help.
     
  11. Dec 18, 2014
    47v6

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    its pretty easy if you do it as the instructions are stated. I had to grind away part of the intake to do it. I also had to remove the front intake bolt as well.
     
  12. Dec 18, 2014
    Warloch

    Warloch Did you say Flattie??? Staff Member Sponsor

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    Replace front bolt with Button head... I keep a couple in the bolt bin for just such an adventure.
     
  13. Dec 18, 2014
    47v6

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    i tried that. still does not fit on mine. have to use maybe a taper head or machine something special. everyone else's results may vary.
     
  14. Feb 4, 2015
    Focker

    Focker That's what I do, I know things and I fix stuff. Staff Member Sponsor 2019 Sponsor

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    I know you put in the HEI...But where's the promised thread? I just bought 2 used HEI units for $50 bucks shipped, can't wait to convert!
     
  15. Feb 4, 2015
    47v6

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    make sure they are odd fire. The star shaped thing at the base on the inside of the distributor is different between the two. I believe its a hall effect sender.
    http://members.toast.net/rbuchholz/heiexp.html

    Its relatively easy to do, but you will need to grind on the intake a bit and you may want to put an extra ground on the distributor housing. The #1 pole is important too. Read everything about it on this site and you will do well. I installed it and it ran ok, then I read the right way to do it here and it runs amazing.
     
  16. Feb 4, 2015
    Focker

    Focker That's what I do, I know things and I fix stuff. Staff Member Sponsor 2019 Sponsor

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    Thanks...I have one of each.
     
  17. Feb 4, 2015
    homersdog

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    Focker,
    sorry I didn't follow up. The article from rich Mott pretty well covers all you need to know. I folowed it step by step, and all went well. My jeep now runs like a top. My grinding job was not as well thought out, I ground off the button head screw too far, so when it comes time to pull the intake manifold I'll need to easy-out it, but hopefully that won't be any time too soon.

    The only photos I have that may help is showing you the area that needs grinding. I bought my HEI distributor complete, so I don't have any pics to show you on building the distributor.

    I also have a photo showing the one hold down clip removed from the HEI cap. This is also to allow clearance to the intake.

    I don't have any photos of the finished install, but I'll get some as soon as I can.

    I put in an adjustable vacuum advance from ACCEL (part no. 31035), it does indeed help get the timing under control at high speeds, so I do recommend it. Its easy and they are available cheap from FLAPS and amazon


    http://www.jeepster.org/swchapter/hei-2.html

    Bolt/area on intake to be ground down
    [​IMG]

    After grind showing clearance
    [​IMG]

    Dist cap mod
    [​IMG]
     
  18. Feb 5, 2015
    Focker

    Focker That's what I do, I know things and I fix stuff. Staff Member Sponsor 2019 Sponsor

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    I was just giving you a bad time. The first thing I need to do is give the HEI a good cleaning, then I'll tackle the conversion. Thanks for posting the pics and mentioning the cap mod.
     
  19. Feb 5, 2015
    47v6

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  20. Feb 5, 2015
    Warloch

    Warloch Did you say Flattie??? Staff Member Sponsor

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    Just FYI - you don't need to pull the hold down on the cap. You can place it so that the rotation works fine, just move it a tooth at a time to get the sweet spot. Once there - you can time it without interference with the cap.
     

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