Alternator Upgrade to 136 Amps on my '93... - JeepForum.com
 
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post #1 of 14 Old 12-26-2008, 09:46 AM Thread Starter
Ajax1972
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Alternator Upgrade to 136 Amps on my '93...

Okay, I have searched but have yet to find an answer that doesn't leave me confused.

Since my '93 Cherokee's alternator crapped the sheets, I have been looking at options. Do I read the threads I've searched correctly to indicate that it is almost a direct swap up to the 136 amp alternator from the 97-98, 5.2 Grand, Dakota, or Ram? The braket will not need to be altered, the plug/wiring may, and the belt should be the same? Aside from the diameter of the housing for the alt and the extra juice, any differences?

There seems to be a lot of stuff on Renix (up through 90) and the 97-01, but nothing (that I can find) directly relates to the years between. There was one thread that had to do with Alternator replacement where Balloo indicated that it should be almost a direct replacement (it appeared that that was the case, but it was not straight out said...).

Thanks!

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post #2 of 14 Old 12-26-2008, 10:49 AM
balloo93
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The older model ZJ 136A alt will work fine. That is what I used on my 93 when I upgraded. The alt bracket will need to be ground down to fit, but it's not much work.

Here's the link wit info on swap:
http://www.bc4x4.com/tech/2004/jeepalt/

Here are the pics of the grinding:
https://www.jeepforum.com/forum/showp...9&postcount=20

Pick up a cheap Harbor Freight grinder and that is about all you will need besides some time.














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post #3 of 14 Old 12-26-2008, 11:22 AM
ehall
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This spec sheet lists all of the vehicles that had this alternator



The stock alternator is clamped between two brackets, one that bolts to the block, and another that bolts to the timing cover. The wiring is the same, however the large boot that covers the positive wire may need to be swapped over.

It's time consuming but not really hard.
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post #4 of 14 Old 12-27-2008, 06:48 PM
Dirty Pile
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So do you have to replace anything else? like the regulator? or is this a swap it, plug it in and go kind of thing?
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post #5 of 14 Old 12-27-2008, 08:00 PM
balloo93
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Many upgrade the wires, I did not and have had no issues with it.














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post #6 of 14 Old 12-28-2008, 06:20 AM
Vikingman
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I have been battling with the same situation on my XJ. I even tried to mill an extention on to the old alternator bracket, but then the alternator would rub on the frame rail which would not be good. I am going to give this a shot and see if it works.

My current 90 amp alternatordrops down to 10 volts when i power up my offroad lights, and that is not even using my winch. I found an alternator that will work and it was rebuilt my an alternator shop. It cost me 82 bucks for 170 amps. It was a pretty good deal.
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post #7 of 14 Old 11-12-2009, 09:29 AM
emosher
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Quote:
Originally Posted by balloo93 View Post
The older model ZJ 136A alt will work fine. That is what I used on my 93 when I upgraded. The alt bracket will need to be ground down to fit, but it's not much work.

Here's the link wit info on swap:
BC4x4.COM four wheel drive, 4x4, offroad and fourwheeling site.

Here are the pics of the grinding:
136A Alt swap - Page 2

Pick up a cheap Harbor Freight grinder and that is about all you will need besides some time.
Those two links were EXACTLY what I was looking for. Thanks!

now it is off to the Junk yard to find the alternator.
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post #8 of 14 Old 12-19-2011, 09:52 AM
Rockethardtop
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Noticed that the first link is dead. Here is a Archived copy of that page

http://web.archive.org/web/201012131.../2004/jeepalt/
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post #9 of 14 Old 12-19-2011, 10:01 AM
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Also according to Hollander if you have a 1991-98 Cherokee with a 4.0 you can get your 136amps with no grinding or modifying from a 96-98 Grand Cherokee.
But the 96-98 Grand Cherokee's came both ways. 136amp and 117amp.

Cakota '97-99 136 amp SAE rating/120 min. test rating, 4 cyl
Cakota '00 136 amp SAE rating/120 min. test rating, 2.5L
C:Grand Cherokee '96-98 6-242 (4.0L), 136 amp SAE rating/120 min. test rating



For further information here is the complete interchange

B:Cherokee '91 90 amp, LHD
B:Cherokee '92-95 (90 amp), LHD
B:Cherokee '96-98 (117 amp SAE rating/90 amp min. test rating)
B:Comanche '91 90 amp, LHD
B:Comanche '92 (90 amp), LHD
Bakota '96 117 amp SAE rating/90 amp min. test rating (2.5L, ident #56005685)
Bakota '97-99 117 amp SAE rating/90 amp min. test rating, 4 cyl
Bakota '00 117 amp SAE rating/90 amp min. test rating, 2.5L
B:Grand Cherokee '93-95 (90 amp), 6-242 (4.0L), LHD
B:Grand Cherokee '96-98 6-242 (4.0L), 117 amp SAE rating/90 amp min. test rating
B:Grand Wagoneer '91 90 amp, LHD
B:Wrangler '91 90 amp, LHD
B:Wrangler '92-95 (90 amp), LHD
B:Wrangler '97-99 117 amp SAE rating/90amp min. test rating
B:Wrangler '00 2.5L, 117 amp SAE rating/90amp min. test rating
Cakota '97-99 136 amp SAE rating/120 min. test rating, 4 cyl
Cakota '00 136 amp SAE rating/120 min. test rating, 2.5L
C:Grand Cherokee '96-98 6-242 (4.0L), 136 amp SAE rating/120 min. test rating
D:Wrangler '97-99 81 amp SAE rating/75 amp min. test rating
D:Wrangler '00-02 2.5L, 81 amp SAE rating/75 amp min. test rating
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post #10 of 14 Old 12-19-2011, 10:24 AM
squirlgod
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Ever considered a brand new high output? A little pricey but you wont have to worry about anything failing in the near future...not to mention 200 amps whooo

http://www.ebay.com/itm/NEW-JEEP-HIG...ht_2833wt_1270
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post #11 of 14 Old 12-19-2011, 10:43 AM
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Quote:
Originally Posted by squirlgod View Post
Ever considered a brand new high output? A little pricey but you wont have to worry about anything failing in the near future...not to mention 200 amps whooo

http://www.ebay.com/itm/NEW-JEEP-HIG...ht_2833wt_1270
For brand new, that looks like a decent price. But will it not fit newer than 1990?
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post #12 of 14 Old 12-19-2011, 11:14 AM
squirlgod
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I dont know I didnt even see that at first. I wouldnt think they changed the mounting bracket between body styles but I guess I'm wrong...maybe it could be modified to fit this, but that sort of defeats the purpose of my initial post haha


So I guess if your going to the initial bracket mod as described, you could go with one of these monsters: http://www.ebay.com/itm/250-AMP-HIGH...ht_1607wt_1037
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post #13 of 14 Old 12-19-2011, 11:40 AM
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IIRC Renix engines have different alternator brackets, but the major difference between Renix and HO is that the renix versions use an internal regulator. HO- engines have an ext. regulator.

1998 Grand Cherokee 5.9 LX daily driver, 1.75" BB, 32" KM2s, HPD30 Eaton e-locker/D44a stock LSD, 4.56 gears, custom- fabbed tube bumpers and tube fenders,...


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1990 XJ (4-door), 4.0 I6, AW4, NP242, PBR 42" tires, Unimog 404 portal axles, 110" WB, full cage + uniframe completely rebuilt, front 3-link + panhard / double triangulated 4-link rear,... ***SOLD***
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post #14 of 14 Old 12-19-2011, 11:41 AM
mbookxj
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THese are supposed to be really good. Expensive but good. Mean Green.

http://shop.mean-green.com/CHEROKEE-...LTD-XJ_c32.htm
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