Converting an Internally-Regulated Alternator to Be Externally-Regulated

[nhschneider]

When I ordered the Beta Marine 90 engine to repower our Contest 48, I selected the 2nd alternator option, which turned out to be an Iskra 175-amp. It's internally regulated and I'd like to convert it to be externally regulated. Does anyone have any experience do this?

Fair winds and calm seas.

[djmarchand]

Take it to an alternator shop near the boat docks. Most alternators can usually be modified to bring the stator leads outside and to bypass the internal regulator.

Use a good external regulator like Balmar's.

David

[colemj]

If you don't already have an external regulator, Sterling Power makes one that connects to internally regulated alternators without further conversion. It leaves the internal regulator fully functional should the external one fail.

Mark

[svcattales]

I've had good luck going to an "auto electric shop" which are very common in most cities. They specialize in alternator and starter repair. I just had one modified and they even added another connection for my electric driven tachomter. Price was cheap and works great with external regulator.