Difference Between 6v And 12v Starter?

I've heard many times that the 6V starter is fine on 12V. I think lots of Jeepers have done it. Doubling the voltage will make it turn faster, and it will also heat up twice as fast as when turning on 6V. If the engine starts quickly, it won't matter.

 

Just get some fire extinguisher in case .... Test before!

 

The material (copper wire) in the 6V is very heavy compared to that of a 12V. Like Tim said, it will spin much faster and will heat up quicker so you can't stay on the starter very long and you need to wait long for cool down. Other than that the starter will likely last a long time if it is in good shape now.

 

I've run a 6v starter in my 12v 3B for almost 20 years. Never noticed it getting hot.

 

Well your right if your engine starts quickly. If you have engine trouble and require quite a bit of cranking, you will find the starter getting much warmer/hotter than it would on 6v.

 

i also run an original 6v starter on a 12v conversion...in my '48 dump truck. been that way for nine years. so far, so good, even with a few extended crankings. the engine is a 237 flat six.

 

yup, like said above, i have a 6v in my 2a and 3b and my dad has one in his 2a. both work fine on 12v.

 

Motor mounts?

 

i put runtz-style voltage reducers inline with the power source for both my heater fan and wiper motor in my dodge. those motors do NOT like 12 volts, and because of the typical use (used for more than 20 seconds), the windings will let out the smoke. added another reducer for the gas gauge. ymmv.

 

Some good info…

AutoReWire.com Al's Notes

 

they may work for a long time. or not.

the conversion in my dodge was installed by a PO. the blower fan worked, but there were dead spots. eventually, the solder from the windings melted off, and the blower stopped working. i took it apart and resoldered, and installed voltage reducers inline with he power source. the blower functions better than when i got the truck in 2007, and doesn't have dead spots. that was 6 years ago. as stated, ymmv.

 

The 6V starter issue is discussed a lot in the Yesterday's Tractors - Discussion Forums forms. Since there is no 12V starter option for a ford 8N, 9N Jubilee tractors. Mostly they add a 6 to 12" piece of metal to drop the voltage when they convert to a 12V system. When I bought a Jubilee a couple of years ago it needed points but if you cranked it long enough it would start, but I burned up the starter. When I replaced it I added a 12" piece of metal, and new points, it doesn't even get warm now

Jay