Coil Testing
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Thread: Coil Testing

  1. #1
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    Coil Testing

    RV8/Auto/Pertronix ignition/Flamethrower coil.

    Hellooo. The Coupe broke down the other week and, because it 'petered out' rather than cut out 'Doodle Bug' style, I assumed it was a fuel issue. After 10/15 minutes, it started up, ran for 10 minutes, broke down, left it for 10 minutes etc etc until I got home. However, my Hot Rod buddies thought it was electrical. As always, I think they were correct. I replaced the coil and went for a 15 mile drive with no problems.
    Is there a way of bench testing the coil with things a 59 year old Hillbilly would have in his Shed ie; no Multimeter etc, just a bit of wire, a bulb and other stuff that's not relevant to this thread.
    Thanks nicely.

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    Official RnS Addict brading's Avatar
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    Not really Billy. Even if you bench tested it with a multimeter it might show it is ok where as when it run on a engine for ten minute an tested it would show that once it had got warm that it is breaking down internally.

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    Gym Junkie chrisvs's Avatar
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    Put the coil back on again, if it breaks down then its pretty certain the coil is faulty.
    Paradise is full of idiots who believe it exists - Georges Wolinski
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    was it mounted upright or on its side by chance....it could overheat if not fitted upright
    neil

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    Keep on Trucking... F100Jay's Avatar
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    Quote Originally Posted by neil still building it View Post
    was it mounted upright or on its side by chance....it could overheat if not fitted upright
    neil
    I did not know that.

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    Some years ago I had a blown Rover in a 32 roadster, every summertime when it got hot it would cut out, then start easily after cooling off.
    Eventually I realized that by mounting the coil to the head, it was just getting too hot sometimes. Moved it away from engine to solve problem.
    I may live in East London, I may have a number plate that reads "Chopt", but I do NOT use 6" wheel spacers!

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    Thanks all. chrisvs; I was going to do exactly that but, living where I do and knowing the luck I have, if it were to break down, it would do it on a bend or some such inappropriate place but, good idea though and it would certainly eliminate it. Neil; I didn't know that either but, it's upright on a mini exhaust bobbin located near the nearside front, about where the sump joins the engine.
    Thanks for the replies everybody.

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    Forgot to ask; Do I have to have a Pertronix Flamethrower coil or, would a normal 12v coil be ok to use with my Pertronix electronic ignotion?
    Thanks.

  11. #9
    Gym Junkie chrisvs's Avatar
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    Quote Originally Posted by RockabillyBilly View Post
    Forgot to ask; Do I have to have a Pertronix Flamethrower coil or, would a normal 12v coil be ok to use with my Pertronix electronic ignotion?
    Thanks.
    The Pertronix Flamethrower probably has a much higher HT voltage than a standard coil, some go up to 60,000 Volts.
    Paradise is full of idiots who believe it exists - Georges Wolinski
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  12. #10
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    Thanks chrisvs; Excuse my ignorance but...er...does that mean I can use a 'ordinary' 12v coil or do I have to use a Pertronix Flamethrower coil?
    Thanks.

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