Best Drop-In Alternator?
11-17-2016, 08:10 AM
#1
Senior Member
Thread Starter
Best Drop-In Alternator?
1996 4.0 Auto 4x4
I'd like to upgrade output if possible. Not really interested in doing much modification to get it to fit.
Too many choices, I'm on a budget but don't want to buy a POS.
Thanks!
I'd like to upgrade output if possible. Not really interested in doing much modification to get it to fit.
Too many choices, I'm on a budget but don't want to buy a POS.
Thanks!
11-17-2016, 09:04 AM
#2
CF Veteran
Join Date: Jul 2013
Location: Monett, MO.
Posts: 7,554
Likes: 0
Received 14 Likes
on
14 Posts
Year: 1999
Model: Cherokee
Engine: 4.0
What size does it have on now? The reason I ask is that you could get a used 117 amp and have it rewound at a shop for a few more amps. That way you would have no mods at all.
I went to a JY and picked up a Durango alt. and had it rewound to about 160 amps for mine just under a $100 in it. But it did take about 20-30 min. to make it fit clearance.
I went to a JY and picked up a Durango alt. and had it rewound to about 160 amps for mine just under a $100 in it. But it did take about 20-30 min. to make it fit clearance.
11-17-2016, 09:24 AM
#3
Senior Member
Thread Starter
It's a super basic no frills model so I doubt it's got anything other than the original 90a alternator in it.
11-17-2016, 05:35 PM
#4
Junior Member
Join Date: Jun 2012
Posts: 81
Likes: 0
Received 0 Likes
on
0 Posts
Model: Cherokee
What size does it have on now? The reason I ask is that you could get a used 117 amp and have it rewound at a shop for a few more amps. That way you would have no mods at all.
I went to a JY and picked up a Durango alt. and had it rewound to about 160 amps for mine just under a $100 in it. But it did take about 20-30 min. to make it fit clearance.
I went to a JY and picked up a Durango alt. and had it rewound to about 160 amps for mine just under a $100 in it. But it did take about 20-30 min. to make it fit clearance.
Some of the durango alts were 160 amps. My local JY can't seem to identify their inventory correctly and tried to sell me two 136 amp versions as the 160.
There are two sizes(physical) for the Nippondenso alternators used in most chrysler products. Some of the larger(physically) units are 136 amp nominal and some are 160 amp nominal. The smaller(physically) units used in Jeeps were available up to around 130ish amps. The smaller one is the only option for an actual "drop in" fit. The larger units will require grinding on your mounting bracket before they will fit.
Fred is right, you could have your existing unit rebuilt and parts replaced for higher output. Unfortunately, the smaller denso units won't dissipate the extra heat well enough and so if you intend to work it hard and often, it won't stand up. The larger unit is a better bet for that.
11-17-2016, 11:35 PM
#5
Banned
Join Date: Oct 2016
Posts: 1,553
Likes: 0
Received 4 Likes
on
4 Posts
Year: 2000 and 1998
Model: Cherokee
Engine: 4.0
itis unlikely that it would ever need to put out the maximum amps, even with stock, unless you are going to run hundreds of watts of audio .
even a winch probably wont need more since when winching everything else is probably off.
it would be interesting to know just how much juice is being used as you roll down the road with all lights on air,fans?? probably not 40 amps.
even a winch probably wont need more since when winching everything else is probably off.
it would be interesting to know just how much juice is being used as you roll down the road with all lights on air,fans?? probably not 40 amps.
11-18-2016, 10:52 AM
#6
CF Veteran
Join Date: Jul 2013
Location: Monett, MO.
Posts: 7,554
Likes: 0
Received 14 Likes
on
14 Posts
Year: 1999
Model: Cherokee
Engine: 4.0
itis unlikely that it would ever need to put out the maximum amps, even with stock, unless you are going to run hundreds of watts of audio .
even a winch probably wont need more since when winching everything else is probably off.
it would be interesting to know just how much juice is being used as you roll down the road with all lights on air,fans?? probably not 40 amps.
even a winch probably wont need more since when winching everything else is probably off.
it would be interesting to know just how much juice is being used as you roll down the road with all lights on air,fans?? probably not 40 amps.
A stock alt will not keep up with a winch during a long hard pull to keep the battery charged. If a larger alt is installed you will need to install larger wiring also for the battery.
As mentioned above a good choice may be a reman smaller Durango Alt 160 amp that is a direct fit, any auto parts should have one.
Trending Topics
11-18-2016, 05:15 PM
#8
Junior Member
Join Date: Jun 2012
Posts: 81
Likes: 0
Received 0 Likes
on
0 Posts
Model: Cherokee
The average 8,000 pound winch is going to require more than 400 amps at full load. Below is the spec sheet for the 12 volt Warn VR8.
Line Pull
Lbs.(Kgs.)
Line Speed
FT./min(M/min.) Motor
Current Pull by layer
layer/Lbs(Kgs.) 0 29 (8.8) 69.2 amps 1/8000 (3629) 2000 (910) 14.2 (4.3) 179.2 amps 2/7280 (3302) 4000 (1810) 9.9 (3) 281 amps 3/6670 (3026) 6000 (2720) 7.3 (2.2) 381 amps 4/6230 (2826) 8000 (3630) 4.8 (1.4) 457 amps