Converting 6v to 12 v or not
Depends. If you are restoring a Cadillac you should probably leave it 6v.
for authenticity. If you have a driver or a street rod its likely a good
idea if done correctly.
The main reason is better starting, better charging and better lights at
night. There is also better availability of things like 12v solenoids,
coils, lights etc.
If you are not sure about the rewiring involved get competent help. Its
better than having your wiring or possibly your car burn up because things
weren't done right.
Some leave difficult-to-replace bulbs like in the instrument panel by
putting a step down device just ahead of those lights that converts 12v to
6v. If you have 6v electric power windows you may wish to leave them by
using a step down voltage device.
There is no point that I can see in running a true dual system, i.e., having
a 12 and a 6 volt batteries and systems since its not difficult to use the
step down devices.
Things you need to change if you are going to run a 12v system: Battery,
Alternator, starter solenoid, coil, head and tail lamps, turn signal lamps
and relay and there may be other things that I'm not sure about like the
condenser in the distributor and wiper motor though if you are 6v that may
be a vacuum operated. If so it should be converted to electric also.
Re. the starter. I've been told numerous times by shops that do electric
work that only the solenoid needs to be changed and not the whole starter.
I've converted a couple of older machines like tractors and bulldozers to
12v by just changing the starter solenoid on the theory the starter doesn't
care how much voltage is running through it but the starter solenoid is
sensitive to voltage and needs to be converted. I've never had a problem
doing that. Others may disagree.
I will say if you are going to the trouble to convert you should pull the
starter and have it checked and possibly rebuilt as the bearings/bushings do
wear and can cause significant dragging, overheating and even a dead short.
You can get rid of the voltage regulator if you go to an alternator. Voltage
regulators are a PITA and no one cried when they went away. I think most
car makers converted to 12v around 1955 or 56 and to alternators instead of
generators about the same time or possibly a few years later. So you might
look for things like alternator mounts and battery trays for the earliest
12v Cadillacs to use in mounting your 12v alternator and battery.
----- Original Message -----
From: "Ben Bockover" <spark_coil@...>
Sent: Thursday, April 20, 2006 6:08 AM
Subject: [Cadillac_Performance_Association] Converting 6v to 12 v or not
> Is converting my 6 volt system to a 12 volt a good idea or not. I also
> thought of running both but can i even do that?
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