How do I run this little 6v V8-60 on 12 volts?

[maddog]

I want to start this motor and run it for a while on the stand to check it out. I only have a 12 volt battery and dont want to buy a 6 volt bat just for this test.

I know the starter will be ok but how about the coil?

Thanks

 

[dmw56]

Run a ballast resistor between the hot wire and the coil.

 

[donsrods]

If it is an old battery that you don't mind messing up a little, you can measure half way across the top of the battery and run a long screw down into the plates. From that screw to the negative post you will get approx 6 volts. We used to do this in the old days when we swapped a later engine into a old 6 volt car so we could run the 6 volt accessories like radio, etc. Your starter will be ok with 12 volts, and you can run the 6 volts to the ignition to try starting the motor.

Don

 

[Willowbilly3]

Or swap on a 12v coil and condensor for the test fire.

 

[maddog]

I used your trick Don, I had to put the screw in a couple times till I had aprox. 6 volts. Worked like a charm. Thanks.
I had an old battery so I put it on the charger and turned it all the way up.

She started and seems to run pretty well.
I changed the oil first and it had ZERO water in it. Suprising.
Next I will hook up a radiator and bring it up to temp.
If it still checks out, I am gonna stick it in the 37 and take it around the block.

 

[motomech]

If it is an old battery that you don't mind messing up a little, you can measure half way across the top of the battery and run a long screw down into the plates. From that screw to the negative post you will get approx 6 volts. We used to do this in the old days when we swapped a later engine into a old 6 volt car so we could run the 6 volt accessories like radio, etc. Your starter will be ok with 12 volts, and you can run the 6 volts to the ignition to try starting the motor.

Don

If you do this will the battery still provide both 6 and 12 volts at the same time?Am i getting this correctly?If so thats awsome.

 

[donsrods]

Yes, each cell is about 2 volts, so if you tap into the third one you will get 6 volts out of that tap. It does shorten the life of the battery somewhat, as you are overworking 1/2 of the battery, but it was all we had back then........none of this fancy electronic stuff.

Don