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12v to 6v revert conversion
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evilwater61
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PostPosted: Tue Sep 19, 2023 8:50 am    Post subject: 12v to 6v revert conversion Reply with quote

Hi folks!

Looking to do the unconventional by reverting back to 6v on my 61 ragtop. This car was given to me in a half done state. Horn, wipers, etc are still 6v. From what I can tell the generator and regulator are 12v. Can I simply get a 6v generator and regulator and replace? Are there other parts you can see I need from my pic? Thanks in advance!!!

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zerotofifty
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PostPosted: Tue Sep 19, 2023 8:56 am    Post subject: Re: 12v to 6v revert conversion Reply with quote

You may need a different generator stand, as many but not all 12 volt generators are a larger diameter than the 6 volt generators. Your 12 volt generator looks like it is likely the large diameter type, but I might be wrong. You might need a smaller generator strap too.
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KTPhil Premium Member
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PostPosted: Tue Sep 19, 2023 9:10 am    Post subject: Re: 12v to 6v revert conversion Reply with quote

Well, not to be obvious, but of course you need to exchange the coil, starter/solenoid, choke, bulbs, relays, ...

Last edited by KTPhil on Fri Sep 29, 2023 7:34 am; edited 1 time in total
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evilwater61
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PostPosted: Tue Sep 19, 2023 9:40 am    Post subject: Re: 12v to 6v revert conversion Reply with quote

KTPhil wrote:
Well, not to be obvious, but of course you need to exchange the coil, starter/solenoid, bulbs, relays, ...


The starter, bulbs, and relays are 6v. Not sure about the coil. How do I check?
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sjbartnik
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PostPosted: Tue Sep 19, 2023 4:25 pm    Post subject: Re: 12v to 6v revert conversion Reply with quote

evilwater61 wrote:

The starter, bulbs, and relays are 6v. Not sure about the coil. How do I check?


It should say on the top.
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rcooled
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PostPosted: Wed Sep 20, 2023 12:43 pm    Post subject: Re: 12v to 6v revert conversion Reply with quote

evilwater61 wrote:
Can I simply get a 6v generator and regulator and replace?

You'll also need the correct backing plate for a 6V generator. It's the single piece shown here on the right (12V generators use a 2-piece backing plate).

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You'll also need the 6V version of this clamping ring (shown here being held in place by the two hex nuts)
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And as already mentioned, you'll also need a 6V generator stand.
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matthew henricks
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PostPosted: Wed Sep 20, 2023 2:03 pm    Post subject: Re: 12v to 6v revert conversion Reply with quote

Don't forget your choke element if you plan to connect it.
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KTPhil Premium Member
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PostPosted: Wed Sep 20, 2023 2:08 pm    Post subject: Re: 12v to 6v revert conversion Reply with quote

Everyone forgets the dome light and burns it out when converting 6-12! Yours will be very dim if you don't change it out lol
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Ojai63dbl
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PostPosted: Fri Sep 29, 2023 6:12 am    Post subject: Re: 12v to 6v revert conversion Reply with quote

probably still 6V as usually not changed

but horn and wiper motor are 6V or 12v (PO might have put a resistor on it to drop voltage from 12V to 6V or replaced the armature in wiper motor)

BTW - I like 6V and except for brightness of headlights (6V LED could correct) . AM still thinking of taking the double cab back to 6V
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PostPosted: Fri Sep 29, 2023 10:54 am    Post subject: Re: 12v to 6v revert conversion Reply with quote

Ojai63dbl wrote:

BTW - I like 6V and except for brightness of headlights (6V LED could correct) . AM still thinking of taking the double cab back to 6V


I subbed in 6v halogens. Not as bright as LEDs, obviously, but brighter than stock and period-correct looking when on or off.

Also, clean up all connections.
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KTPhil Premium Member
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PostPosted: Fri Sep 29, 2023 2:03 pm    Post subject: Re: 12v to 6v revert conversion Reply with quote

If you do this, you must either use new factory style crimps, or replace them with soldered and shrink tubed connectors, and make sure they are tight. This is for the entire path from battery/regulator, up to the headlight switch, to the dimmer, fusebox, and headlamp connector tabs. It's tedious, but this eliminates the voltage drops that make an old 6V system so dim.
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Sharp64
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PostPosted: Fri Sep 29, 2023 3:29 pm    Post subject: Re: 12v to 6v revert conversion Reply with quote

Your car obviously, but why? Are you restoring the car back to 100% original? If not, why not just leave it? The 6volt lovers will tell you that its the best thing since sliced bread, but if you truly plan to drive and enjoy the car, 12v is way more convenient. Batteries are easier to get. Components are as well. Brighter lights, easier starts, less maintenance are benefits. Really zero drawbacks. If the flywheel and starter are both 6v, rock on. It'll start at the blip of the key. Radios are also easier and cheaper to find. I drove myself nuts cleaning and soldering every connection and splice. I cleaned all grounds. Replaced cables and ground straps. Cleaned switches, soldered the terminals on the fuse block etc etc trying to keep my 64 6v. Still had poor headlights and intermittent nom starting issues. 12v conversion and ZERO issues. Didnt even bother when I bought my 60. Already had the components on the way as it was being transported across the country.

my .03
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rcooled
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PostPosted: Fri Sep 29, 2023 5:14 pm    Post subject: Re: 12v to 6v revert conversion Reply with quote

Sharp64 wrote:
If the flywheel and starter are both 6v, rock on.

If you wind up keeping the car 12V, and the starter & flywheel are still 6V, I'd recommend just swapping out the solenoid for a 12V version. It'll be easier on the flywheel when the starter engages.

A 6V starter runs fine on 12V...just spins a bit faster.

Quote:
...12v is way more convenient.

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