Re: 12v conversion problems
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Posted by DJ on June 06, 1998 at 15:07:14:
In Reply to: 12v conversion problems posted by Pat on June 05, 1998 at 19:17:06:
: Last fall a local mechanic converted the electrical system on my Ferguson TO-30 to 12v. This consisted of installing a one-wire alternator and a ballast resistor. Everthing was fine all winter but as I used the tractor for longer periods of time in warmer weather I noticed the engine running rougher. Finally the thing just started to lose power and I managed to get it parked running on two or three cylinders. I checked the spark plugs and found the #1 cylinder had not been firing in the end. I changed points, distributor cap, condensor, rotor, spark plug wires and spark plugs. After I completed all this...NO SPARK! I got hold of a voltmeter and found the voltage at the coil to be 6v. I though this was OK but after researching the archives of this forum I guess that's too much voltage for the 6v coil. There is no spark from the coil. Here is a list a questions that I need help with:
: 1. Could it be that the excessive voltage coupled with increased operating temperatures caused the coil to fail?
: 2. If I replace the coil should it be with a 12v coil? What make and model?
: 3. If I use a 12v coil can I delete all the ballast resistors?
: 4. Will I need a different condensor and points if I use a 12v. coil? : Sorry for the long post but I thought I'd give as much info as possible to help resolve this problem. Thanks! Pat: I've converted a couple tractors to 12 volts,
the following should help you. 1.use a coil off a Chev 350 v8 or 6cyl.6volt
coils burn out on 12volts.your alternator puts out
about 14 volts.
2.use a condensor for 12 volt.
3.you can delete ballast resister if you are
running solid core plug wires,risister wires will
burn out without resister.
4.use same points,no differance.
5.you also need a 12volt battery.size is not
important,6 volt starters turn over twice as fast
on 12volts.you don't need to replace starter.
6.once you get tractor running,with engine
running remove one wire from battery if it keeps
running your alternator is woking.if you have to
replace alternator,the best one is off a Chev,
it has a internal regulator. Hope this helps you: DJ
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