Originally Posted by QBus
I actually had a Delco SI-22 I believe it was 154 amp alternator laying around that I threw on there for the time being. It charges fine the only problems with it are it doesn't excite itself without running the rpm's up a bit. Also the tach drive part of the alternator doesn't seem to be working which is a minor issue
when i first got my bus my old alternator which was so old I could barely get the numbers.. had the excite issue.. sometimes it would take me driving the bus 5-10 minutes before id get any charge...
it slowly got worse and worse so I changed it to the SB-200.. that one excites in aboiut 10 seconds and the book says it excites at 1200 Alternator RPM.. which most pulleys are 2-1 or 2.5-1 so it will excite at slow idle..
the bosch's do a "voltage check" every minute or so where they stop charging for about 1/3 of a second.. I was told if you run them as single wire thats how they test the top charge on the batteries...
if you run them with the sense wire they dont do that... so far ive been happy with it.. but if I had a "free" alternator laying in the garage i wouldve run that for sure!