AMC Eagle Den Forum

The Mighty 258 => Engine Electrical Systems. => Topic started by: Zoro on February 09, 2015, 04:16:38 PM

Title: Alternator upgrades
Post by: Zoro on February 09, 2015, 04:16:38 PM
What are you guys doing for alternator upgrades?

How about the CS144? If so what are you doing to make it work with the Eagle?
Title: Re: Alternator upgrades
Post by: vangremlin on February 09, 2015, 05:17:33 PM
Depending on how much of an upgrade you are looking for,  the Mean Green Alternator looks pretty good

http://shop.mean-green.com/1986-75-42L-258-MG7127-D8.htm
Title: Re: Alternator upgrades
Post by: Zoro on February 09, 2015, 05:48:08 PM
Those are nice alternators but out of my price range.

I guess I'm looking for more of a junk-yard/parts store upgrade.
Title: Re: Alternator upgrades
Post by: eaglefreek on February 09, 2015, 06:23:49 PM
It's been a while since I installed mine and can't quite remember which one. I posted a thread here, but I think it got lost in the big delete. The one I got was a 130 amp, if I recall and was a direct bolt in. I did upgrade the charge wire to 6 gauge. I'll look at it tomorrow and see if I can figure out which one I have. A couple days ago I went to a cars and coffee event and one of the guys had a 80's Ford Mustang State Trooper car and had the lights running for a while. His battery died and another guy in a Toyota pickup tried to give him a jump. They tried for a little while and weren't having much luck. I volunteered since I have the high amp alternator and after we hooked up to my car, his car started as soon as he turned the key.
Title: Re: Alternator upgrades
Post by: Zoro on February 09, 2015, 06:26:04 PM
EF-

Let me know when you figure it out! :D
Title: Re: Alternator upgrades
Post by: Zoro on February 09, 2015, 06:27:20 PM
One other thing.

Anybody make a replacement Eagle ALT pulley? The one of my old alternator is trashed and the current alternator(Jeep 62AMP) has a smaller pulley.
Title: Re: Alternator upgrades
Post by: eaglefreek on February 10, 2015, 12:53:50 PM
My alternator appears to be a 12si and I now recall it being a 140 amp unit. I bought it from an Ebay seller and don't remember which one. It came with the pulley. Don't get a one wire alternator, stick with a 3 wire.
Title: Re: Alternator upgrades
Post by: vangremlin on February 17, 2015, 07:07:42 PM
I just bought a 140 amp alternator off eBay to put in my Kammback.  It shipped today, so hopefully I'll be able to install it this weekend.

http://www.ebay.com/itm/NEW-Black-GM-Chevy-140-amp-1-or-3-wire-alternator-Rat-Rod-Race-Car-Street-Custom-/331481977136?vxp=mtr
Title: Re: Alternator upgrades
Post by: eaglefreek on February 17, 2015, 09:05:09 PM
Cool. Hook it up as a 3 wire and I would run a minimum 6 Gauge charge wire. I think I ran a 4 gauge after looking closer at it.
Title: Re: Alternator upgrades
Post by: vangremlin on February 18, 2015, 04:18:03 PM
Quote from: eaglefreek on February 17, 2015, 09:05:09 PM
Cool. Hook it up as a 3 wire and I would run a minimum 6 Gauge charge wire. I think I ran a 4 gauge after looking closer at it.

Yes most of the ones I saw for sale on eBay recommend a 4 gauge wire.  It looks like I can use the same style wire as runs between the solenoid and the starter to do the trick.