6al and plug gaps

Discussion in 'Technical' started by jerrybromley, Mar 31, 2012.

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  1. Bizzness

    Bizzness Member

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    I hook up a tach that didn't work with my msd. And it ran like crap. And does ur msd have that green wire loop if I remember right ur suppose to cut. Just some ideas Goodluck
     
    Bizzness, Apr 3, 2012
    #16
  2. sdb416

    sdb416 Member

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    What kind of tach do you have and did you make sure the tach was set on 8 cylinders? I bought a cheap one and thought the tach was bad and then found out it was set for a 4 cylinder, switched it to 8 and it worked properly.


     
    sdb416, Apr 3, 2012
    #17
  3. jerrybromley

    jerrybromley Member

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    Good thought on he tach .It's a cheep Sun tach and now that I think about it MSD has a list of tachs. I'll try unplugging the tach and see if it makes any difference.
     
    jerrybromley, Apr 3, 2012
    #18
  4. Bizzness

    Bizzness Member

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    It was a while ago. I don't think it had a select on it. I bought it from this guy for ten bucks. I just remember it was big. I already had the car running for a while so I could totally notice the difference after I wired it in. The dyno shop gapped my plugs at 52 and my car runs fine btw
     
    Bizzness, Apr 3, 2012
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  5. sdb416

    sdb416 Member

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    Great! glad you got it figured out.:thumbs2:


     
    sdb416, Apr 4, 2012
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  6. jerrybromley

    jerrybromley Member

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    :huh:Still looking for the Stabber's problem. I disconnected the tach and nothing changed. A friend suggested maybe a vacumm leak ( it is a fresh motor maybe 25 miles). So I sprayed starting fluid around all the likely spots. No noticable change
     

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    jerrybromley, Apr 4, 2012
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  7. injectedmav

    injectedmav Member

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    You can bypass the MSD altogether to test the ignition system. The cars I installed them on have a bypass adapter that plugs in to allow the car to run without the box. Some road and endurance racers run 2 boxes that they can switch on the fly in case of a failure.

    But you may have another problem. What makes you think the MSD is at fault? What other tests have you run?
     
    injectedmav, Apr 4, 2012
    #22
  8. jerrybromley

    jerrybromley Member

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    100_1418[1].jpg

    Just a front shot of my car
     
    jerrybromley, Apr 4, 2012
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  9. jerrybromley

    jerrybromley Member

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    The big reason I was looking at the ignition system is that I could not get the motor to run with more that .035 gap on the plugs . MSD recomends .045 to .050 on a motor with 9.5 : 1 comp. It seemed to me it should be able to run with the recomended gap. Even @ .035 I can't get it to idle @ less than 1000 rpm and it stumbles on acceleration . I'm not 100% it's the spark ...but hey you gotta start somewhere
     
    jerrybromley, Apr 4, 2012
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  10. jerrybromley

    jerrybromley Member

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    100_1405[1].jpg

    Just another shot of the engine bay
     
    jerrybromley, Apr 4, 2012
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  11. jerrybromley

    jerrybromley Member

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    100_1422[1].jpg


    Shot of the interior ( ignore the wires hanging down not quite finished)
     
    jerrybromley, Apr 4, 2012
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  12. Bizzness

    Bizzness Member

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    U got a really nice lookin car. Just keep grindin u will get it figured out. I had about five things go wrong when I first got mine goin. That cost me hundreds of hours tryin to figure out. I don't think it ever ends
     
    Bizzness, Apr 4, 2012
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  13. jerrybromley

    jerrybromley Member

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    Yea I know Devils in the details .Just need to find some new ideas .I know I'll get it sooner or later
     
    jerrybromley, Apr 4, 2012
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  14. Bizzness

    Bizzness Member

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    Have u looked into ur carb or timing? Does it smoke
     
    Bizzness, Apr 4, 2012
    #29
  15. mercgt73

    mercgt73 Member Supporting Member

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    What does your cap and rotor look like?
     
    mercgt73, Apr 4, 2012
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