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Thread: magneto to electronic ignition

  1. #1
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    magneto to electronic ignition

    why can't we convert a magneto to electronic ignition. if it could be done without the high price tag. i've been reading about the four cylinder tractors using the pertronix unit an running fine. there using a delco distributor but i think the unit for the 2 cylinder engine would work for the magneto. a little machine work should be all it would take. i tried a distributor on the 4a084 and couldn't get to firing right. but on the mag you only need 2 sparks per revolution and a coil wire ran inside like i have mine already. no need to worry about points getting burned or corroded. the pertronix uses a hall effect pickup and a plastic insert that goes over the distributor lobe. it has 2 magnets embedded in the plastic to trigger spark. you don't need a pcb board module or anything to boost the signal to ignition coil.its like an hei system. i'm going to purchase a unit soon. i have found the kit for less than 100 dollars and you can use any ignition coil. anyone tell me why it won't work?
    4a084
    Arrow belt drive
    marty bray 116 mini pro
    solex 32/36
    weber 32/36
    solex 34 pict 3
    weber 34 ich
    Razor x 3 blade

  2. #2
    Super Moderator Corky's Avatar
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    Re: magneto to electronic ignition

    I've used the pertronix units before and they've worked fine...I don't see any reason you couldn't retrofit one...That will be an interesting project I'll be looking forward to see your progress...

    Aluminum .120 14' X 76" hull
    Teledyne 4a084-4 engine
    Circle S 1.69:1 reduction
    67" Whirlwind "Razor X" prop



  3. #3
    Member Bart's Avatar
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    Re: magneto to electronic ignition

    dang, been reading the reviews on this, for the most part it has been all positive,
    but this one they are still using it on his boat, but he talked about some of the problems that he found out. depending on which version you end up with.
    http://www.mastercraft.com/teamtalk/...p/t-60436.html
    all in all, it looks almost to simple. the install instructions for the Igniter 11, that i pulled up, are pretty straight forward.
    some have complained that the magnets have been became loose in the plastic insert, (but then did they install it correctly?)
    don't what modification you will need to to, for the plastic insert to fit on the 084 lobe?
    but many of the reviews were very positive, as to the improvement that they noticed.
    I'm tempted..... but at the moment,
    I'm waiting for a speeduino board, coils, injectors, among other small items. that are in the mail. it is going to take a little, but i am curious, how long it will take me to get this all together. between all the other entertainment I have going on. I guess it gives me something to do, during these dark and rainy winter months. who would have thought we have only 4 inches of snow. if the weather was 5 degrees colder, it would be over 30 feet by now.
    go figure. it is a lot simpler to plow water, than snow.

  4. #4

    Re: magneto to electronic ignition

    -8* here this morning...
    River is getting very hard .
    No snow on the ground today.

  5. #5
    Super Moderator Corky's Avatar
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    Re: magneto to electronic ignition

    It will be interesting to see how well the pertronix will take the environment around it in this application..Much more vibration and humidity than what would be in an automobile...I know of one failure myself and we never did figure out what caused it...I'm thinking it was initially wired incorrectly by the owner...It seems the unit won't take any deviation in the scope of wiring and it's intended use...

    Aluminum .120 14' X 76" hull
    Teledyne 4a084-4 engine
    Circle S 1.69:1 reduction
    67" Whirlwind "Razor X" prop



  6. #6
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    Re: magneto to electronic ignition

    they say don't leave the ignition on any extended time without the engine running or the unit will burn out. i expect to kill a couple just getting the firing dialed in. thinking i may have to go with 4 cylinder unit instead of 2 cylinder. because of cutting an adapter will be easier. some advertise what direction the distributor rotation is and others don't mention it. i guess it depends more on how the unit is mounted than the rotation direction. i plan on ordering one in a couple of weeks and see what i can come up with. removing 2 magnets should make it work for 2 sparks per revolution.
    Last edited by bgmcl60; Yesterday at 04:49 PM.
    4a084
    Arrow belt drive
    marty bray 116 mini pro
    solex 32/36
    weber 32/36
    solex 34 pict 3
    weber 34 ich
    Razor x 3 blade

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