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View Full Version : M62 alternator options



moroza
10-10-2009, 03:10 AM
Hi all,

I'm working on an M62 project for an E34 Touring, and have a few options regarding the alternator:

1. 140A one from the E34; as far as I can tell it's original with 208k and 15 years on it.

2. 120A one from the M62, also seemingly original with 156k and 11 years.

3. Can I retrofit the M62TU water-cooled alternator without too much headache? Just wrt. to the increased (or decreased?) reliability and not the installation work itself, is this desirable?

4. Is there some aftermarket heavy-duty/high-output one readily available? I'm not running a crazy sound system, but higher capacity, efficiency, or durability is never a bad thing.

Ordinarily, my inclination would be to leave it alone, but reliability is more a concern with this project than usual, and the alternator looks to be a royal pain to replace once the engine's in.

Thoughts?