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  1. middlecalf

    1976 FJ40 2F Semi Transistorized Points Igniter…Dwell measurement?

    Well, now I can (and will 😂) go home, I’ve learned something. Thanks @pb4ugo that makes sense, as I see that that whole 1F manual section is with the dizzy on a test stand. With that, it looks like both sets of info are in the ballpark with each other. Thread hammer over! @Ackcruisers hope...
  2. middlecalf

    1976 FJ40 2F Semi Transistorized Points Igniter…Dwell measurement?

    Wonder if I can get this vintage tester functioning? 😂 (@Grayscale in one of our barns from an 8x10 Kodak Azo contact print from back in my “grayscale” large format days 😂)
  3. middlecalf

    1976 FJ40 2F Semi Transistorized Points Igniter…Dwell measurement?

    Wow, great stuff, I completely forgot about Coolerman’s thread. Full of lots of great stuff. He should get a Nobel for it! 😂 I asked about the 2F manual info, because my 1F Engine Repair Manual (dated 1966) has significantly different info wrt the dizzy (it does specify a vacuum advance...
  4. middlecalf

    1976 FJ40 2F Semi Transistorized Points Igniter…Dwell measurement?

    👍 Few questions: 1) are you running ported vacuum or manifold vacuum advance, and is the idle at 650-rpm set with vacuum attached or plugged? 2) does the 2F FSM have any references wrt when the distributor’s mechanical advance starts (rpm) and when its vacuum advance starts (mmHg or inHG)?
  5. middlecalf

    1976 FJ40 2F Semi Transistorized Points Igniter…Dwell measurement?

    Curious about this, where are you reading this?
  6. middlecalf

    1976 FJ40 2F Semi Transistorized Points Igniter…Dwell measurement?

    Did you try and use the coil connections to get rpm?
  7. middlecalf

    1976 FJ40 2F Semi Transistorized Points Igniter…Dwell measurement?

    @Ackcruisers is that with all coil/dizzy setups or just with your lineage of ignitor/coil/dizzy setup? What a crazy world, acknowledge your product is faulty yet still sell/market it. 😳 (I actually went through this with Magnadyne on one of their RV radio/dvd/stereo units. They now all work...
  8. middlecalf

    1976 FJ40 2F Semi Transistorized Points Igniter…Dwell measurement?

    The coil only discharges when the dizzy points are closed, so just like a tach your meter should be sensing this rate and duration (dwell) of each discharge. Since your meter does this with built in functionality it doesn’t need an induction reading probe which would connect to a plug wire...
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