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Old 01-03-2009, 03:37 PM   #1
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Which Alternator ?

Hello.

I want a better alternator.
There are 200A, 250A and 300A alternators @ ebay from Mustangs or bigger pickups.
Does any of these alternators fit in my 06 TJ?

Thanks in advance.
nicolas-eric

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Old 01-03-2009, 05:18 PM   #2
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Hello.

I want a better alternator.
There are 200A, 250A and 300A alternators @ ebay from Mustangs or bigger pickups.
Does any of these alternators fit in my 06 TJ?

Thanks in advance.
nicolas-eric

I googled it and came up with this:
BC4x4.COM four wheel drive, 4x4, offroad and fourwheeling site.

What do you need the extra juice for? What kind of battery are you running? Optima batteries are amazing you can run them dead over and over and they keep taking a charge. You can also run dual batteries. I'm not sure if you need a little extra juice once in a while or all the time.

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Old 01-03-2009, 05:22 PM   #3
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I have a 100 Ah battery in my TJ.
A 136A alternator isnīt a big improvement. My TJ has a stock 117A alternator.

I want more A to load the battery as fast as possible while/after winching.
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Old 01-03-2009, 06:52 PM   #4
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I have a 100 Ah battery in my TJ.
A 136A alternator isnīt a big improvement. My TJ has a stock 117A alternator.

I want more A to load the battery as fast as possible while/after winching.

140 is the best I'm seeing:
Mean Green MG1380 - Mean Green Alternator for 00-05 Jeep Wrangler TJ with 4.0L - Quadratec
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Old 01-03-2009, 07:11 PM   #5
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It wouldn't hurt to email the guys at mean-green, I'm sure they could set you up with a 200A alternator.

You might also want to call around to local alternator shops to see if they can build your stock alternator into a 200A setup.

I still say pick up an Optima battery. The Yellow top performs better but the red top has a 3 year warranty and still gets the job done. I run the Yellow top.
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Old 01-03-2009, 09:24 PM   #6
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Old 01-04-2009, 11:28 AM   #7
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nico the 136A is a big improvement over the stock alt.I replaced mine from a 1998 Dodge Ram 1500 and have no problems now running my winch like before.I would have to sit in the Jeep and give it gas just to use the winch continuous before but now I do not have to.Before the swap the voltage gauge would drop all the way to nothing and the engine would start to stumble and try to stall and that was less than a minute of use on the winch now I can run it continuous with the lights and stereo on and have no problems at all.The one for the RAM is a lot less than a mean green also.Here is the link I used to find my alt.BC4x4.COM four wheel drive, 4x4, offroad and fourwheeling site. BTW if you go any more than the 136A you will run into problems with melted wires at certain points or so I was told when I was thinking about it.
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Old 01-04-2009, 12:54 PM   #8
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are you sure that a 136A alternator is so much better than the 117A stock one?
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Old 01-04-2009, 12:56 PM   #9
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I have had 136 amp in my last few Dodge trucks and they were all great . I never had a problem running anything I wanted even all at once even " at idle " the lights never dimmed and no drop in the gauge . I understand a lot of the aftermarket or replacement alternators are not like that at low rpm and I understand even the OE 136 amps don't put out 136 at idle but still put out more at idle than a lot do which is important to me . Most all alternators do a great job at above idle but thats not all I want an alternator to do . Just keep that in mind when shopping " what does it put out at idle " ,they are not all equal .
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Old 01-04-2009, 01:04 PM   #10
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are you sure that a 136A alternator is so much better than the 117A stock one?
From everything I've read all over the internet says the 136A gets it done. A lot of people also say get an Optima battery, some people run dual batteries.

I think your best bet is to run the 136A and see if that's enough. Optima batteries are made to be run down over and over and still perform. Most batteries can't take the abuse.
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Old 01-04-2009, 01:10 PM   #11
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Just to try something different I tried a Sears Die hard Platnium in my 97 Cherokee which was great . I never got to install the 136 in but that battery made a world of difference . It took me a while but I eventually found a 136 alt from a 98 Dodge for it but sold the Jeep before I could install it . I'd like to use it now but I don't think I can in my TJ being it is a 99 . I have to research that .
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Old 01-04-2009, 05:15 PM   #12
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are you sure that a 136A alternator is so much better than the 117A stock one?
I am not sure what you mean by am I sure.I would not have told you about it if I wasn't sure Yes I am sure the 21 extra amps makes a huge difference.Like I said it has been tried and true more than once and by more people than just me.With my stock alternator I could not use my winch with the radio and lights on without the engine stalling and even with all the accessories off it would still start to drop after just a few seconds of winching and after about 1 minute the voltage would drop enough the engine would start to lope and try to stall.Now with the 136A alt I have used my winch continuous 10 minutes or more with the lights and radio on and the voltage never drops below 9-10 volts.Yes I know 9 volts is low but not bad while running a 10,000lb winch for 10 or more minutes straight and once the winch stops it does not take long at all for the voltage to recover!What size is your winch and how many lights do you have on at the same time you are useing the winch???
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Old 01-04-2009, 05:17 PM   #13
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set up a second alternator/ battery just for your winch
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Old 01-04-2009, 05:24 PM   #14
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Just to try something different I tried a Sears Die hard Platnium in my 97 Cherokee which was great . I never got to install the 136 in but that battery made a world of difference . It took me a while but I eventually found a 136 alt from a 98 Dodge for it but sold the Jeep before I could install it . I'd like to use it now but I don't think I can in my TJ being it is a 99 . I have to research that .
Should be the same unless they have change the style of wire connectors from 97 to 99.If the wires bolt onto the alternator the same then it should work just the same.
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Old 01-04-2009, 05:41 PM   #15
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so i can get a 98 dodge p/u alternator and put it in my 02 tj? my alternator is stock and sucks balls. i have to turn of everything as well just to use my winch. i got 4 rallye 4000 100 watt lamps on the light bar and 1200 watts of stereo. i've noticed that if i'm running the heater and the lights the voltage gauge drops below 12, if i turn on the radio it drops even lower. nevermind using the winch. i have to turn everything off, if i don't it dies. twice this has happened and i needed a jump. what are wheeling buddies for.
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Old 01-04-2009, 06:29 PM   #16
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I am not sure on the 02 I think they did change the connectors on the alt but not sure on the year! It may have been in 99 and the one for the 98 Ram may not even work for the 99 but you can research it and find out.
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Old 01-04-2009, 07:30 PM   #17
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Should be the same unless they have change the style of wire connectors from 97 to 99.If the wires bolt onto the alternator the same then it should work just the same.
From what I understand in 99 they changed to a plug instead of the stud type of a connector on the 98 on back . Thats not to say I won't give it a try even if it means removing the existing plug onthe Jeep and connecting the alt like a 98 is. I have only had this TJ for a couple months and have not gotten to that point yet , but its comming . I have service manuals for each vehicle we own here so I will eventually figure that out also .
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Old 01-04-2009, 09:12 PM   #18
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I will buy a 200A MeanGreen alternator with 100A at idle.
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Old 01-04-2009, 09:42 PM   #19
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Mean-Green sure make me feel like my 99 is an odd duck . I noticed they go from early 90sto 98 and 2000 on but 99 is by itself in their listing . I wonder if its more than just the plug that I was told
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Old 01-05-2009, 09:51 AM   #20
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Nico I completely over looked and forgot that yours is an 06!!! But if you look at the 99 Ram alternator it is a round style plug in also.If the plugs are the same and the amps are at 136 then the one from a 99 Ram should be the same swap.That is what I was getting at.As far as yours nico I am not sure by 06 I would have to look closely at the plug in on your alternator then look at the one on an 06-07 Ram 1500.Once again if the plugs are the same then I would try to find someone that has tried it on the newer Jeeps!!!It is worth it I would say.The mean green is just way to expensive in my book!!!

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