I'm going to upgrade my alternator to a bigger amp one. What year of zj am I asking for at the parts store and will I have to replacing the pulley also or does it have to have 6 rings or have 5. If it has 6 do I use the first 5 starting from the engine out or vise versa

 

I'm assuming you have a 97 from your username. You'll want the 136A alternator from a ZJ with a 5.2 (93-98). Keep the pulley you have now, it will be easier that way. I'm not sure if the pulleys are a different diameter or not on the ZJ but when I did my Durango alternator they were different.

 

Did you do the 160 amp Durango?

 

no, 136

 

So am I swapping my pulley from my old alternator over to the new one or do I just use the new pulley

 

use the old pulley.

 

I did this swap about a year ago, the ZJ pulley works fine, just use the first five ridges. I've had no problems out of it.

 

Go to ace alternators on eBuy.
150 amp for $105.
Works great on my '94.

 

Damn that just $5 more than I had in a used Durango alt bought from the JY when I had it rewound to 160 amps at a shop, good info.

 

Same, I just used the new one. Once the belt is tight enough, it doesn't know or care that there's any ridges beyond what it uses.

 

[QUOTE=madmanmarty;3246585]Go to ace alternators on eBuy.
150 amp for $105.
Works great on my '94.[/QUOT

I've seen some in eBay that are for the inline 6 with 150 amp would that be ok

 

===> Madmanmarty, is the back of your alternator (wire hook up wise) same as the lower amp ones? I am looking to get a new alt for my 1988.

 

Yes. It's in the original housing,rebuilt for 150 amp.
So install is identical to OEM.

 

Here is a pic.

 

Hi guys, after searching the forums, it seems that people have more questions than answers about the swap. Do any of you have a write up?

I have an 89 and would love to upgrade.
I don't mind a little grinding to FIT it in, but would prefer one that plugs in (or at least has minimal rewire).