Re: 51 generator rebuild

Posted by HH56 On 2015/8/5 19:38:54

If you have a good local shop, there is nothing special about the 51 generator. Several makes used essentially the same item so if the shop says they are familiar with the unit and can do it then I wouldn't hesitate.

If the car is running well on 6v now I wouldn't see a need for a change to 12v unless you want to add AC or a powerful radio.

If you do make the change it is not as simple as just changing the generator and regulator. You need to think about voltage reduction to the stock radio and heater(s) as well as changing all the bulbs and also some changes with the OD if you have one.

The starter solenoid needs to change and while there have been those using the stock 6v starter on 12v, there have been several recent reports of the castings being cracked on starters being used that way. The 12v increases the speed and torque in the starter sufficiently that it slams the pinion into the end with such force the nose breaks off. Because of that possibility I would strongly suggest also having the starter converted for 12v operation. All the changes add up money wise so just a few things to think about.