New alternator

[Spanky]

Anybody have difficulty with alternators going bad? I just installed my 3rd one (since 2016)! I'm using 100-amp 1 wire alternators and can't figure out why they don't last. I use a battery cutoff switch when not driving my T and use a trickle charger to keep the battery up to snuff. any ideas???

 

[LongJohn]

Try one from Napa or Powermaster. I think the problem is a fricking chinaman!

 

[Indycars]

I assume that you mean they fail electrically and not the bearings.
LongJohn beat me to it, buy a Powermaster.

 

[fletcherson]

Alternators are usually pretty stable, long lasting components, and the delco is pretty rock solid. I can only speculate that there are low quality regulators or diodes that are failing. Perhaps order quality parts and replace them or take it to a rebuilder if you aren’t comfortable doing it. There really isn’t anything to fail in them beyond that.... you aren’t wearing them out. Napa usually has decent parts... or used to.

 

[Spanky]

The one I replaced today was a Tuff Stuff I bought from Summit Racing in April 2019. I guess 5 years isn't too bad. It's just that I don't put a lot of miles on them. Maybe Fletch has a point. I'll have to look into the rebuilding angle.

(PS - Crawling around on my garage floor is getting increasingly less fun! )

 

[rbsWELDER]

I agree with the China comments. When my alternator went bad, I took it to the local Alternator rebuilder. He opened it up and said repairing was impossible as the innards were Chinese junk! I replaced it with a Powermaster, which is doing fine.

 

[guilld]

Can buy one from Oriley's with lifetime warranty but you have to keep up with the paperwork.

 

[Indycars]

I would try to get one with "Transpo" internals. Probably won't be cheap but they are the best. I'm assuming you have a 10si model.

Who is Transpo Electronics?

Who is Transpo Electronics?

alternatorparts.com

10Si Series Positive & Negative Ground Alternators, Parts, and Kits

10Si type alternators. Positive and negative ground. Alternator parts and more.

alternatorparts.com

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