Alternator Change

Tim, guess what I received from Powermaster as replacement for Motorola Jeep alternator? A milled 12SI 100A one-wire!

 

Woohoo!

You have no ammeter, I presume?

 

Had, but already have a voltmeter and new harness kit. And yes, I'll use a monster wire between alternator and battery

 

96 amp at idle it will bring a lot of amp.

Only worry i would have will be belt slipping. The bigger in amp the alternator is the more power you will need to make it turn. When i put my cs144 (almost same spec as you) i have to use a dual belt set-up to get rid of the slippage.

 

That is true, but only when there is sufficient load. Under normal conditions a 100A alternator is no more difficult to spin than a 55A alternator. From 56A on up it is indeed harder to spin. Now there may be a slight difference just because its spinning more copper, but that's not the same.

Powermaster instructions are to tighten until you can move the engine by turning the alternator shaft with a socket. That's a pretty snug belt.

 

I run a ford 3g 135 amp one wire on my pickup(1966 w/FE eng) with a single v-belt.Borderline acceptable but with a little larger diameter pulley it is working fine. Can't manage dual belts with the present setup and serpentine is more than I want to spend after investing in the present setup. mike

 

I'd keep a watch on the water pump. A belt that tight can wear out water pump bearing pretty fast.