My alternator died.
I found some articles for replacing it.
But as always there are mentioned two types: GM 10si and GM 12si
![Rolling Eyes :roll:](./images/smilies/icon_rolleyes.gif)
Which one is best to go for a standard 2001 SB?
There are also crome plated or polished ones. What's the better way to go?
I am surprised of that Olaf, my bike has a 12SI and the information I read was showing that 10SI is normally a lower output than what we have. You aren't looking at the wire connector position are you? As that changes between models for fitment to the vehicle. I believe the air intake is the easiest place to look. I just looked at my alternator and the air intake matches the 12SI, funny though the other side where there are 2 round holes I have 5, the pic of 10SI shows 6. Probably something that changed over the years.KrautV8 wrote:Jack,
I have just seen almost the same subject on the .com site and according to the pic Shane posted about the difference of 10SI compared to 12SI alternators - I seem to have a 10SI style alternator housing....hmmm...ah, too bad...the rebuild kit is for 12SI only, so I think it won't work for us![]()
Olaf
Yep for the record its true that the pully on the alt from BH is smaller diameter than the stock ebay/zone/whatev unit, effectively making the alt spin faster. Its no problem to swap them over but i guess you want to do it before you put the new one back on.PIrate Rob wrote:400 rebuildsounds like they were trying you on Martin, unless that included a rechrome which it would also need by now. Somebody once told me that the Boss Hoss alt pully is smaller than the stock pulley that way it would spin faster i guess at low revs. Not sure if its true or not as i never compared but let us know when you get it.