hi Guys
Seems I keep digging a deeper hole for myself on this 1949 cub.
So it currently has a 12v conversion but has a magneto with a new coil. I bought I Pertronix Ignitor kit. However, will this kit work with the magneto or do I need to convert to a distributor? If so, any good step-by-step on how to do that?
Thanks!
Steven
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Pertronix Ignition Install Question
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- Glen
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Re: Pertronix Ignition Install Question
Hi,
I read on here recently that they said the Pertronix ignition does not work in a magneto.
They said it works in a Battery Ignition Unit.
You could do some searching at the top of the page.
I read on here recently that they said the Pertronix ignition does not work in a magneto.
They said it works in a Battery Ignition Unit.
You could do some searching at the top of the page.
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Re: Pertronix Ignition Install Question
stevenforehand wrote:hi Guys
Seems I keep digging a deeper hole for myself on this 1949 cub.
So it currently has a 12v conversion but has a magneto with a new coil. I bought I Pertronix Ignitor kit. However, will this kit work with the magneto or do I need to convert to a distributor? If so, any good step-by-step on how to do that?
Thanks! Steven
Confused on the description. 12v conversion, does this mean that you are using an external 12v coil or are you using 12v for starting and still have a OEM magneto with internal coil? It might not matter since the Pertronix ignition might not fit inside the magneto housing. If you convert to battery/distributor ignition just be sure you get ALL the parts. The mag mounts differently from the way a distributor mounts to the block.
Stan in LA (lower AL)
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Re: Pertronix Ignition Install Question
Hey guys
Sorry I wasnt clear. The current system has a magneto with the wire clipped and external coil installed. So if I bought something like this: http://www.ebay.com/itm/252852723471, it seems it includes all I need to replace the magneto with a distributor?
Sorry I wasnt clear. The current system has a magneto with the wire clipped and external coil installed. So if I bought something like this: http://www.ebay.com/itm/252852723471, it seems it includes all I need to replace the magneto with a distributor?
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Re: Pertronix Ignition Install Question
Someone posted that Pertronix systems are available for 6v and 12v, the question is will it work in a magneto housing. That question is best left to someone who has done it or to the mfg tech support. Sorry for the lack of knowledge. Stan
EDIT: Curious why you want to change to Pertronix ignition. Are you having ignition issues? There are many Cubs out there that are running satisfactorily with the setup that you have.
EDIT 2: From GSS 1012 shows what's needed and a distributor minus the cap:
EDIT: Curious why you want to change to Pertronix ignition. Are you having ignition issues? There are many Cubs out there that are running satisfactorily with the setup that you have.
EDIT 2: From GSS 1012 shows what's needed and a distributor minus the cap:
Last edited by staninlowerAL on Wed Apr 19, 2017 7:54 pm, edited 1 time in total.
Stan in LA (lower AL)
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Re: Pertronix Ignition Install Question
I have never tried that myself, nor do I know of anyone who has, but I see no reason it would not work with the external coil being used. One thing to think about though, is that a magneto is at TDC or 13 degrees advanced with no in between while a distributor progressively advances as rpm are increased until it reaches 16 degrees advanced. This would not keep it from working, but you would not gain some of the benefits gained from the proportional advance.
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Re: Pertronix Ignition Install Question
Hi,
The Battery Ignition Unit uses a special stud to hold it to the engine at the top hole. The stud screws into the engine, and is a smaller size where it goes through the hole in the Battery Ignition Unit. Here are pages from the Cub parts manual showing it. It is number 18 in the pic.
It is the 2nd number 18 on the 2nd page.
Below is a picture from TM Tractor showing the stud in the top hole.
Below is a post from February about this topic, read what Gary says at the last post on the page.
http://www.farmallcub.info/manuals/cub_ ... 012-07.jpg
http://www.farmallcub.info/manuals/cub_ ... 012-08.jpg
viewtopic.php?f=1&t=95826
The Battery Ignition Unit uses a special stud to hold it to the engine at the top hole. The stud screws into the engine, and is a smaller size where it goes through the hole in the Battery Ignition Unit. Here are pages from the Cub parts manual showing it. It is number 18 in the pic.
It is the 2nd number 18 on the 2nd page.
Below is a picture from TM Tractor showing the stud in the top hole.
Below is a post from February about this topic, read what Gary says at the last post on the page.
http://www.farmallcub.info/manuals/cub_ ... 012-07.jpg
http://www.farmallcub.info/manuals/cub_ ... 012-08.jpg
viewtopic.php?f=1&t=95826
Last edited by Glen on Thu Apr 20, 2017 4:55 pm, edited 1 time in total.
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Re: Pertronix Ignition Install Question
I think the issue will be you not be able to get the wires out to the coil the same way as with the distributor. it may be easier and a cleaner install if you get a distributor and as John said get more of the benefit of the conversion
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Re: Pertronix Ignition Install Question
The Pertronix will not work in the mag housing for several reasons. 1. it won't mount in there. 2. There would be no place to mount the rotating magnet. 3. The point cam, in the mag, spins at double speed, verses the dist. 4. Other reasons I haven't wasted my time thinking about. It just plain won't work!
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Re: Pertronix Ignition Install Question
I had not thought about the shaft speed till Gary posted, but he has that pegged. The shaft operating the points spins twice as fast on a mag as it does on a distributor and there is a gear on the end to slow the rotation down for the rotor. Which if I recall correctly (happens occasionally) also means the shaft of a mag only has 2 flat spots where the points ride rather than 4 as the distributor does.
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Re: Pertronix Ignition Install Question
A mag IS the ignition system. A distributor is a DIFFERENT type ignition system. The battery (and charging system) will only be for the starter and lights in a mag system. You can run a Cub with only a mag, start is with crank. No charging system or starter or lights.
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