12 VOLTS?

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Re: 12 VOLTS?

Postby Seff » Tue May 09, 2017 10:29 pm

Chuck Lutz wrote:....unless I leave the jeep sit for a long time it does not need a charging.
What's a long time? Mine sits for at least three months without needing a charge before starting. Haven't tested it any longer.


Chuck Lutz wrote:NDT tires suck also but I think most guys who have changed their G503 to 12 volt still run NDTs.....Hmm...wonder why, standard tread tires are SO much better, right?
I can only answer for myself, but I like the NDT look better. :D
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Re: 12 VOLTS?

Postby Mark Jesic » Wed May 10, 2017 12:59 am

Chuck, the best warranty you can get on any battery over here is 2 years, its time i moved over to the USA. :D
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Re: 12 VOLTS?

Postby JIMN » Fri May 19, 2017 4:33 am

I think most people (including me) would prefer 6 volt for accuracy reasons. But doubling the voltage to 12 is undeniably an improvement.
An improvement and a convenience. Most people also use their jeeps as a tractor. When a vehicle is stuck in the yard, you grab the jeep. When a tree of bush needs to be pulled, you grab the jeep, When another vehicle needs a jump start, what do you do? You grab the Jeep if it is 12 volt.
If you want it to start better in the cold weather, 12 volt.
If you drive at night and want better lights, 12 volt.
If you want a more convenient battery to charge or be boosted by your other vehicle, 12 volt.
If you want to install an "off the shelf" cell phone charger, 12 volt.
If you just want the jeep running and don't yet have a 6 volt generator or regulator, what is the easiest way to get it going...... 12 volt.
If you are low on funds, often the cheapest way to go is...... 12 volt.

I like the look of the 6 volt battery, and the sound of a 6 volt starter. But when it comes to performance, the 12 volt wins in every category.
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Re: 12 VOLTS?

Postby Ben Dover » Fri May 19, 2017 1:28 pm

I'll take the 6 Volt.
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Re: 12 VOLTS?

Postby Mark Tombleson » Fri May 19, 2017 1:51 pm

Actually, the Army conducted tests on the 12v conversion in 1942-1944 when it considered changing the jeep to 12v.

They decided to use the W5 & W7 12v conversion kits due to costs and lack of agreement between the various Army Boards on what was wanted.

There is a 7 page letter to the Army from the Willys-Overland's Chief Engineer, Delmar G Roos dated October 22, 1942 that detailed the changes involved including why they used 6v, the premise the vehicle was to replace the motorcycle, and the wide disagreement on what size of generator was needed and the compromises required.

I'm sure this come as no surprise... :wink: :lol: :lol:
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Re: 12 VOLTS?

Postby Chuck Lutz » Fri May 19, 2017 2:47 pm

For all those things...I have a F-250 460 cu in 4x4 pick up truck which is much better suited to do all those tasks. So I don't see a need to go 12 volt....remember, I ripped out the bubba 12-volt system in my jeep when I got it and went back to 6-volt.

If I wanted a 12-volt jeep I'd by a CJ-5 or something. Like Mark says, proper use of grounding straps makes a world of difference with your 6-volt jeep. If the difference is spending money to overhaul your 6-volt components vs. buying 12-volt ones...aside from properly cleaning and adjusting your regulator and putting in new bearings/bushing in your genny....the purist in me wins that battle every time.

Do you NEED 12-volt system? Sure if you are using your jeep like a tow truck or it hasn't been maintained and the components are trashed out....Or maybe some maintenance to the 6-volt components would suffice.

Its your jeep but to say the 12-volt set up is "better" is like what they say about "beauty"...its in the eye of the beholder.
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Re: 12 VOLTS?

Postby Ben Dover » Sat May 20, 2017 12:12 am

These Jeeps started OK back in the 6 Volt years, PM and driver starting procedure skill were the key. Some never master when to choke, when to pump.
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Re: 12 VOLTS?

Postby Mark Jesic » Sat May 20, 2017 1:56 am

tHEY SAY TO START UP YOU SHOULD PUT THE CLUTCH IN, i always do, no problems (yet).
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Re: 12 VOLTS?

Postby artificer » Sat May 20, 2017 1:13 pm

That is a very good idea, in cold climates particularly.
There is a simple valid reason, that some may not be aware of.

When using the starter, even in neutral clutch engaged, the flywheel is turning not only the engine BUT the clutch driven plate, transmission input shaft, counter gear, plus 2nd gear on the transmission output shaft & reverse idler gear. A lot of extra drag on a 6 volt system when oil is cold, thick & viscosity is high.
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Re: 12 VOLTS?

Postby Mark Jesic » Sat May 20, 2017 1:28 pm

Cheers John, i didnt know that, thanks for posting. :D
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Re: 12 VOLTS?

Postby Ben Dover » Sun May 21, 2017 4:24 am

They still should start as intended when maintained in good shape.
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