Originally Posted by Pete the Cat
I used a 105 amp high output alternator (from Ample Power) with my 42hp Westerbeke
coupled with a Ample Power
Smart Regulator for 15 years to charge my golf cart batteries (ran my crummy Adler Barbour reefer for two years in the tropics) with no problems--even with a small v belt. I am repowering with a Yanmar
3JH4 and it has an 80 amp internally controlled Hitachi alternator. I was going to get a alternator guy to change the stock alternator from N to P (from internal to external) so I could use the same regulator, but he says he does not recommend this. Any thoughts on this or alternatives??
Did your alternator guy say WHY he didn't recommend this?
My local guy built me a standard Delco 100 amp alternator to put on my Universal 5411, after I brought him the old, dead Motorola 55 amp unit to be rebuilt. He said a primary thing to keep in mind when cruising is "how common is the unit," i.e. if you're cruising to unknown territory and have a problem with the alternator, you can take this standard Delco to any auto electric
shop and they'll fix or replace it cheap
. But as soon as you take them something you pulled off a boat engine
, you get this dumb look from them, and they tell you they can't help you.
So maybe he's thinking since 99% of alternators today are internally regulated, sticking with something that doesn't throw your local shop a curve ball might be easier to support in the long run? A lot of these guys are not exactly brain surgeons