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6 volt to 12 volt

J

JR Frye

Member
How hard is it to change a farmall H from 6 volt to 12 volt, and about how much will it cost.
Im just asking>
Many thanks and have a great day
JR
 
For my DC case it took and alternator, battery, light bulbs, and a resister. Back then less than $100.00. Resister is about $15.00, Bulbs about the same, one wire alternator about $35.00 and what ever a battery costs now.
 
(quoted from post at 06:35:59 01/09/14) How hard is it to change a farmall H from 6 volt to 12 volt, and about how much will it cost.
Im just asking>
Many thanks and have a great day
JR
Click to expand...

Here in Pa I can't get a 1 wire alternator for less than $75.00.
If you found one you would still need a 50% resistor to the points, a 12 volt battery and 12volt light bulbs..
 
Myself i do not care for the one wire set up . And what i do is change the gen over to 12 volt . Lot less hassle and just add a resistor to the coil switch the wires on the amp gauge change lite bulbs add a 12 volt battery and make it Neg. ground If you insist on and alt and ya want a delco to fit this can be done by taking the gen bracket off and turning it upside down and slotting the mounting holes a little then adding and extra piece to the org. bracket to support the alt. and slotting the adjuster bracket a little then matching a belt as there is no room for any real belt adjustment but it can be done and still get the hood on with out cutting or bending the hood. The guy that does the Gen change over for me does a pretty good job and they will put out 25-27 amp charge more then enough for and old tractor with three lites and a coil.
 
I don't want to high jack your post.but thinking about doing the change also.if I used a 12 volt coil, could I still use the original points and condenser.with out using a resistor?
 
I really do not like flipping the bracket and using the threaded rod, think there is a little too much flex in the 3/8 rod. Mine is that way, and would not do it again.

I also prefer the 3 wire alternator with the integral regulator.
 
The cheapest and easiest route is to install an alternator with a 6 volt internal regulator. I can find the part # if interested.

If it starts OK with a fully charged 6v battery, this is the way to go. If it won't, maybe the starter needs some attention...
 
If your doing a 3 wire Delco and you include every thing it is a tad under $200. Figure $100 plus for the battery then another $50 plus for the alternator. Then about $20 or so for the wires and hook up parts and then $3 for the Radio shack 276-1661 diode so your almost up to the $200 and the left over you need in a gas tank
 
cansome one post pics how to wire a hatachi altanator. they are 79$ at autozone.rummored to fit under a h hood.
 
Could maybe find a Ford 1961-1964 generator from Pinto and Falcons- or get the English Ford generator they wer derived from, more years in application in classic foreign car catalogs but price varies- usually up. The Generator was also used in industrial applications in US and Europe until late 1970s. Thing is the generator is same small size as the 6 volt IHC so no hood cutting needed, bracketing is minor adjustment instead of fabricate new mounts, regulator is direct swap for 12 V. Other Generators possible- the Bosche for VW Beetle to 1972(?) used on some because of size and belt pulley 2 piece is adjustable like some firm mount tractor generator units. Other generator small size is a Lucas industrial model- positive ground available stock flashed. The small hitachi alternator is good, sometimes might be listed in rebuilder catalog as a Nissan/Datsun unit by application- and some salvage yards may have a used, tested "Datsun/Nissan" on shelf for $25.00
 
Yes, use a 12V (3 ohm primary winding) coil for 12V. All other original ignition parts will work fine on 12V.
 
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