What is this, 6V or 12V, (or 9V?) :)

Thu Mar 16, 2006 6:30 pm

Can't quite tell what I've got here...

I have a Wal*Mart EverStart battery of indeterminate voltage due to weathered labels, I'm guessing it's 6V based on the size, and the model number looks like 20-5 but it's hard to tell.

I have a remanufactured starter that says REMANUFACTURED 6V STARTER INERTIA TYPE P/N 104221A2R MEGAVOLT.

And I have an alternator of indeterminate origin goober bracketed onto the left front side.

Any ideas what I've got here? Is there such a thing as a 6V alternator? That predates me by a few years if there is...




Thu Mar 16, 2006 6:35 pm

that looks klike a 12v battery and 12 volt delco alternator

Thu Mar 16, 2006 6:46 pm

I would agree - 12 volt.


Thu Mar 16, 2006 6:57 pm

Does that explain why my 6V starter sounds like an OOOOGAH horn?

Thu Mar 16, 2006 7:03 pm

it sure helps explain it.


Thu Mar 16, 2006 7:04 pm

And so, my only option is probably to replace it with a 12V starter?

Thu Mar 16, 2006 7:16 pm

not necessarily. You can have your existing starter checked. Your description sounds like the bendix is not kicking all the way out or is slow coming out so that the starter is turning before it engages the flywheel thus creating your "ah-oo-gah" sound.
I would take the starter in for a rebuild. The bendix may be the only thing needing repair. You have the option to have it re-wound with 12 volt windings or with original 6 volt windings if that is necessary. I'd guess that bendix and bearings will take care of it.

Thu Mar 16, 2006 7:54 pm

Allen, one way to tell the voltage of a batt is to count the number of cells or holes in the case. Since lead acid batts are approx. 2 volts per cell the math is easy. I'll bet there are 3 holes under each cover.

Re: Grrrr.

Thu Mar 16, 2006 8:48 pm

allenlook wrote:Does that explain why my 6V starter sounds like an OOOOGAH horn?


That sound is a separate issue, indicating another problem. What is often overlooked is that the starter is already overloaded at 6 volts... or any voltage it can't support continuously. A starter is a starter, starter is a starter, starter is a starter.

At 12 volts the engine starts more quickly, so the important thing... heat buildup is not much, if any greater. The only problem I see with a 6 volt starter using 12 volts is the greater shock to the nose from the harder slam of the Bendix from 12 volts.


Thu Mar 16, 2006 8:49 pm

I'll peel that starter off first chance I get and check it out...

Does it engage the flywheel directly, or does it engage a starter ring gear that's replaceable?

Thu Mar 16, 2006 9:42 pm

Ring gears are replaceable but you really don't want to open that can of worms if you don't have to.


Thu Mar 16, 2006 10:24 pm

Iknow a fello in halifax that was told he could get a 6v alt with pos ground.
So he went to the auto place to get it and the guy behind the counter
said noway but just then a worker came from out back said it would be ready
the next day.It has been working fine on his cub so he saids.

Thu Mar 16, 2006 10:33 pm

Mac- I know someone who has a Farmall A with a 6V pos ground Alternator. Maybe they were original on some models.

Thu Mar 16, 2006 10:37 pm

Ask any of the old car guys. 6 volt pos ground alternators are available
but not cheap.

Thu Mar 16, 2006 10:39 pm

This one I think was made from an other :roll: maybe a 12v alt