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My local guy had one for $220 but I didn’t inspect for brand

I took my 21 SI to the local alternator shop, and he said it was smoked. I want to get another, but are there any inexpensive brands that are better or worse than others in anyone’s experience?. Thanks

Thanks. That’s where I was heading. Wondering if there might be an issue with the truck that would kill one in short order like that. It had a non functional Leece-Neville on it when I got it. I’m inclined to hook alternators up “proper” with excite and sense wires...seems like it isn’t...

The batteries that were in the truck were junk. Small and old, just placekeepers, was slaving the truck to start. It’s my project M50 I saved from the scrapper, which is also turning out to be a test mule for things like this alt and the aluminum Chevy radiator. I tested and put some good used...

I used to know a thing or two about alternators but it’s been a couple decades. @74M35A2 probably knows...

I installed a 21si knockoff and voltage varies with RPM today. I don’t think it did when I first installed it last weekend, seems like it was putting out about 28v from the get go. Ideas? Thanks