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11-13-2007, 05:10 AM
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#1
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Registered User
Join Date: Sep 2006
Location: PA
Posts: 71
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I have a 1988 with I-6 258. Stock alternator finally crapped out. Since I have additional lighting and heated seats (well worth it!) I figured now is the time to upgrade the alternator!
Any suggestions of replacement upgrades that will not require major modifications?
__________________
08 Sahara
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11-13-2007, 05:30 AM
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#2
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Registered User
Join Date: Mar 2007
Location: South Jersey
Posts: 2,063
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I "bolted on" a 90 amp from pep boys... thats it... 
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11-13-2007, 06:50 AM
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#3
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Registered User
Join Date: May 2006
Location: Palm Coast, Florida
Posts: 437
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Get a 97-98 GC alternator for the 8 cylinder motor. It puts out 136 amps and bolts right up.
__________________
1991 2.5L YJ, 4" R.E. lift kit, 1-1/4" Lift shackles, K&N CAI, 4.0 TB w/ bored out intake, 5.0L Ford Mustang fuel injectors, 117A alternator, Ford Taurus electric fan, Rancho steering stabilizer, 8.8 Ford axle, 35x12.5x15 Dunlop Mud Rovers, Smittybuilt Titanium side steps, Smittybilt SRC Front Grille Guard Bumper, Smittybilt Stereo Center console, PIAA 520 Series fog lights, Sylvania Silverstar headlights, 20 gallon fuel tank upgrade & Herculined tub.
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11-13-2007, 07:03 AM
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#4
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BUILT. NOT BOUGHT.
Join Date: Apr 2005
Location: Wilmington, NC
Posts: 5,769
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CS-144 came in a caddy if i remember right.... 90 amps at idle, 140 max w/o any modifications
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'89 Wrangler, 4.0/AW4, 106" Wheelbase, SOA, custom XJ packs, 2" Body. Front High Pinion Dana 44 w/yukon super-joints, chromo inners and outers, and a Lincoln Locker. Rear Dana 60 w/Yukon 1.5" 35 Spline chomo shafts and detroit locker. 5.38 Yukon Gears. Hydro-Assist, 39.5x18" Boggers on 15x12 RockKrawler's w/ 2.75" of backspacing. Comp cut, tube fenders, custom bumpers and rock sliders, fuel cell, CB, Stewart Warner Gauges, SmittyBilt XRC8 Winch, 140 Amp CS-144 Alternator, Electric Fan, and a cooler of beer. 3897 lbs
March 1st, 8pm. WILMINGTON, NC MEET & GREET @ HOOTERS!
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11-13-2007, 07:20 AM
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#5
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Registered User
Join Date: Feb 2007
Location: Fillmore, California
Posts: 2,449
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And then there are those fancy alternators that Quadratec and Four Wheel Parts and others sell...real expensive, not sure what advantage they would have over the alternators that the other guys are recommending...of course, you are assured that they will fit and work, and who knows what the price of the other alternators are, BUT I suspect that the ones being recommended above aren't anywhere near $300!!!!
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11-13-2007, 07:23 AM
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#6
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BUILT. NOT BOUGHT.
Join Date: Apr 2005
Location: Wilmington, NC
Posts: 5,769
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if you use an oem alternator you can get it replaced with a lifetime waranty at your local parts store.... i dont think quadratec or mean green can do that 
__________________
'89 Wrangler, 4.0/AW4, 106" Wheelbase, SOA, custom XJ packs, 2" Body. Front High Pinion Dana 44 w/yukon super-joints, chromo inners and outers, and a Lincoln Locker. Rear Dana 60 w/Yukon 1.5" 35 Spline chomo shafts and detroit locker. 5.38 Yukon Gears. Hydro-Assist, 39.5x18" Boggers on 15x12 RockKrawler's w/ 2.75" of backspacing. Comp cut, tube fenders, custom bumpers and rock sliders, fuel cell, CB, Stewart Warner Gauges, SmittyBilt XRC8 Winch, 140 Amp CS-144 Alternator, Electric Fan, and a cooler of beer. 3897 lbs
March 1st, 8pm. WILMINGTON, NC MEET & GREET @ HOOTERS!
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11-13-2007, 07:23 AM
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#7
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ISO 9001 Compliant
Join Date: Jun 2007
Location: San Diego, CA
Posts: 13,818
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this topic was beaten to death a couple of months ago. I did a cs144 from a caddy in my 1990. works great
some info here
http://www.extreme4wheelin.com/tech/...ators/tech.htm
list of possible donors for a CS-144
Brand: Delco 310321-594
DR # 10480133 - GMA594N
Applications:
Buick: 140 AMP.
94-96 Roadmaster
94-95 Roadmaster Estate
94-96 Roadmaster Limited
96-96 Roadmaster Limited Wagon
Cadillac: 140 AMP.
93-96 Fleetwood*
93-96 Fleetwood Brougham
Chevrolet
94-94 Caprice
1. (W) V8 4.3L FI; 140 AMP.
2. (P) V8 5.7L FI; 140 AMP.
93-93 Caprice 140 AMP.
94-96 Caprice Classic
1. (W) V8 4.3L FI; 140 AMP.
2. (P) V8 5.7L FI; 140 AMP.
93-93 Caprice Classic
1. (Z) V6 4.3L FI; 140 AMP.
2. (E) V8 5.0L FI; 140 AMP.
3. (7) V8 5.7L FI; 140 AMP.
94-94 Caprice Classic LS
1. (W) V8 4.3L FI; 140 AMP.
2. (P) V8 5.7L FI; 140 AMP.
93-93 Caprice Classic LS 140 AMP.
93-93 Caprice Classic LTZ 140 AMP.
94-94 Caprice LS
1. (W) V8 4.3L FI; 140 AMP.
2. (P) V8 5.7L FI; 140 AMP.
94-96 Impala SS 140 AMP.
92-95 Lumina APV* 140 AMP.
Oldsmobile: 140 AMP.
92-95 Silhouette*
Pontiac: 140 AMP.
92-95 Trans Sport
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11-13-2007, 09:05 AM
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#8
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don't fear the Jeeper
Join Date: Mar 2006
Location: Fresno area, Ca.
Posts: 7,449
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What I put in my junk ... 165 amp direct bolt in for most YJ's...
http://superpageshosting.com/4alters...J&catuid=10013
WRM 
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'92 YJ, 4.0, 5sp, 8.8 w/ 4.56's locked F&R, Teralow 4-1, HD SYE, BDS 5" SUA lifted on 35 MTR's. PSE front trail cage kit, 1ton TRE flip, 1"shackles, 1"BL, 1" MM. <><
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11-13-2007, 09:17 AM
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#9
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ISO 9001 Compliant
Join Date: Jun 2007
Location: San Diego, CA
Posts: 13,818
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Every time alternators come up it is worth pointing out the difference in older vs newer jeeps is internally vs. externally regulated. The newer models have the regulator controlled by the computer so there are two different paths to upgrade. Not sure of the years though, but 1990 and older will take a cs144, as mentioned above.
Search for some threads with my name and others along with alternators going back 2-3 months and you will find a ton of info on the various options.
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11-13-2007, 09:42 AM
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#10
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Registered User
Join Date: Feb 2007
Location: WPB FL
Posts: 1,576
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good topic tis is on my list of thngs to do too
__________________
For sale 1992 YJ Wrangler: Hurculiner, bestop Safari top.RC 4" lift 32 AT wheels, custom bumpers,
2000 Corvette Roadster: Almost stock
http://www.demonoff-road.com/
2002 Avalanche: To many mods to list
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11-13-2007, 05:57 PM
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#11
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Registered User
Join Date: Sep 2006
Location: PA
Posts: 71
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Thank You!!
Thanks guys!
I appreciate the help.
Will try one of these options this weekend.
__________________
08 Sahara
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11-13-2007, 07:18 PM
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#12
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BUILT. NOT BOUGHT.
Join Date: Apr 2005
Location: Wilmington, NC
Posts: 5,769
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were ALL yj's regulated internally? or were some regulated by the ecu?
doesnt really matter for me but i'm sure it will help someone reading this thread so they can better understand what they need.
-Erik
__________________
'89 Wrangler, 4.0/AW4, 106" Wheelbase, SOA, custom XJ packs, 2" Body. Front High Pinion Dana 44 w/yukon super-joints, chromo inners and outers, and a Lincoln Locker. Rear Dana 60 w/Yukon 1.5" 35 Spline chomo shafts and detroit locker. 5.38 Yukon Gears. Hydro-Assist, 39.5x18" Boggers on 15x12 RockKrawler's w/ 2.75" of backspacing. Comp cut, tube fenders, custom bumpers and rock sliders, fuel cell, CB, Stewart Warner Gauges, SmittyBilt XRC8 Winch, 140 Amp CS-144 Alternator, Electric Fan, and a cooler of beer. 3897 lbs
March 1st, 8pm. WILMINGTON, NC MEET & GREET @ HOOTERS!
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11-13-2007, 09:56 PM
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#13
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ISO 9001 Compliant
Join Date: Jun 2007
Location: San Diego, CA
Posts: 13,818
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There was a cut off for internal v external regulators, but I can't find the link right now. Don't take this as authoritative but as I recall the internally regulated alts have only 2 wires plus the output. One is the field power and the other goes to the amp meter.
best info I can find is 1991 and newer are regulated by the ecm. Simplest way is to identify what is in there now. I hate to leave this hanging but the important thing is that not all yj's have the same style of alternator and to verify yours.
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>
Alternator Upgrade?
