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Old 12-17-2006, 01:51 PM   #76 (permalink)
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On a side note,
If you plan on doing this swap in your YJ, don't forget you'll need to upgrade both of your Alt fuses in the main fuse box under the hood. When I installed my new Alt out of a 99 Dodge 1500, the increase amp output blew both fuses. Took me a couple of hours to figure that one out.
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Old 03-03-2007, 05:41 AM   #77 (permalink)
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Alonng the lines of this thread. Rumor has it that you can change the alt pulley size to allow the alt to develope higher amperage at low RPM

I have found that night time hard winching situations (with headlights on) sometimes lacks the juice for the operation even with my foot on the throttle.

Any one does this? Is it just a band aid fix?
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Old 11-29-2007, 12:48 AM   #78 (permalink)
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I remembered this thread from a while back and searched for it to help another jeeper out....

after reading it through again i had to bump it back up....it's just good damn tech.
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Old 11-29-2007, 01:23 AM   #79 (permalink)
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go to bed gumbo
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Old 11-30-2007, 12:27 AM   #80 (permalink)
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ugh, blow me
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Old 11-30-2007, 10:45 AM   #81 (permalink)
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Nice Tech! Now get your pics to show up
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Old 01-01-2008, 12:00 PM   #82 (permalink)
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Quote:
Originally Posted by dorfs View Post
A quick addition on identifying them. If you look at the front, the heavy duty ones have 2 circles cast around them, (as seen in the 5th pic) and the smaller ones have 1 circle. I was asked once to install a heavy duty alternator on a 2000 XJ for one of Fort Carsons MP's ride. I did have to make some small modifications to the lower mounting bracket for clearance. But when I installed the heavier ones on my 4.0 and 5.9, it was a direct swap.
Re: 2000XJ install....just to confirm because you are the only person I can find that's done one post 1998 model year....You didn't have to 'reclock' it, I read on NAXJA this might be necessary.

And in case it helps anyone else here are a couple pics I found on-line that may help identification (you can see the double rings mentioned elsewhere):

136amp / 56027913



117amp / 56005685AC, 56041822AA


Last edited by LynchMob; 01-01-2008 at 12:21 PM.
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Old 01-03-2008, 08:11 PM   #83 (permalink)
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So has anyone found a solution for 2001 and up Jeeps?

I mean spending 500 bucks on a Wrangler Power Product Amp is a little friggn crazy if you ask me..

Last edited by unscathed; 01-03-2008 at 08:12 PM.
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Old 08-15-2008, 04:46 PM   #84 (permalink)
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can anyone tell me the way the two wires you have to cut go onto the 56027913?
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Old 10-28-2009, 03:54 PM   #85 (permalink)
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can anyone tell me the way the two wires you have to cut go onto the 56027913?
BTT for an answer to this question. The wires in question are for the field coil. On my XJ that this is going in, i had a 2 wire plug, the new 136A alt has 2 ring terminals. Are they polarized?
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Old 02-11-2010, 08:38 PM   #86 (permalink)
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Anyone have a link to the mising photos within this thread? More specifically the wiring mods required?
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Old 03-10-2011, 08:50 PM   #87 (permalink)
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Hmmm....6 and 1/2 years old thread with good tech, why not bump it up!



BTW, for everybody asking questions years after the thread was started, try looking at the dates
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Old 03-11-2011, 07:00 PM   #88 (permalink)
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www.powerbastards.com makes great alternators now too
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Old 03-11-2011, 08:35 PM   #89 (permalink)
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Quote:
Originally Posted by GFY Racing View Post
Hmmm....6 and 1/2 years old thread with good tech, why not bump it up!



BTW, for everybody asking questions years after the thread was started, try looking at the dates
Pot calling the kettle black?
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Old 07-08-2013, 05:10 AM   #90 (permalink)
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Couple of questions.
Do you have to upgrade the main power lead to the alternator for a thicker gauge wire?
Also, what do yall recommend upgrading the fuse to so it doesn't blow with the new install?

Thank you.
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Old 07-12-2013, 07:35 AM   #91 (permalink)
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Shoulda asked me. Already did that swap. I remember looking at the alt in the Jeep. Thinking gawd, that looks familiar, popped the hood on the dodge and realized they had the same case. LOL Didn't even have to swap rubber parts around, straight bolt in. I *think* the pulleys were even the same.

For those that haven't done this, mine is a 4.0L 92 YJ, the alt came from a 1996 Dodge Ram 1500 5.9L V8.

Thing I don't get, 120A alt for a Jeep is nearly $200, the nearly identicle 136A alt from a Dodge truck is $150. (new prices obviously)

I think if it says Jeep they have to try to rape you.
Used this alternator, bolted right in. just swapped my fuses for two 60amps.
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Old 07-12-2013, 06:52 PM   #92 (permalink)
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Great thread going to pick up a new alternator tomorrow!
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Old 07-15-2013, 07:56 AM   #93 (permalink)
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Thanks to this thread I am now sporting a new 160 amp alternator on my 06! Awesome write up. Thanks for all the awesome info.
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Old 07-19-2013, 09:24 AM   #94 (permalink)
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Quote:
Originally Posted by Jeep itch View Post
Alonng the lines of this thread. Rumor has it that you can change the alt pulley size to allow the alt to develope higher amperage at low RPM

I have found that night time hard winching situations (with headlights on) sometimes lacks the juice for the operation even with my foot on the throttle.

Any one does this? Is it just a band aid fix?

You can change the pulley size. When you pick up a new alternator they usually come with a "dyno slip" that tells you their output at a given alternator rpm. If you can do a little math you can figure out how fast your alternator is spinning compared to your engine and adjust the pulley size to put the alternator in a more efficient part of its curve. Most peak out around 6000rpms at the alternator.
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