Topic: High Output Alternators

[Tappie]

Hi,

I am searching for a High output alternator for my 89 YJ. I've been told that early YJ's (up to '90), use different alternators than later models. Anyone know what the difference is?

Many tnx,
Charon

[flyingbrick]

http://4bangerjp.com/forums/index.php?topic=400.0

[chardrc]

v belt vrs serpinin. (old and new respectively)

[Jeffy]

v belt vrs serpinin. (old and new respectively)

There's a lot more then just that.  The alternator is a Delco not a Denso.  BIG difference since they can't be mixed.

[Tappie]

Many thanks for clearing this for me!

Just searching Ebay now... The guys where Jeffy bought his alternator don't have em more than 100A....

Charon

[nic99007]

v belt vrs serpinin. (old and new respectively)

There's a lot more then just that.  The alternator is a Delco not a Denso.  BIG difference since they can't be mixed.

So, i have the same problem and if i'm reading jeffy's chart right I can use this 140 amp Delco-Remy CS-144 (144mm Stator) alternator,  is that right?  if so can i just bolt it on?  thanks

[Jeffy]

According to what I was able to see all of the listed Delco's should be interchangeable with each other just like how all of the Denso's are.  You might need to adjust the bushings a bit but overall they would be the same.

You could probably go to partsamerica.com and enter in your vehicle and see what comes up.  They have a crossreference chart which should point you into the higher amp alts if you look for large truck aps.

Mine's slightly different since it's not a OEM replacement.  They actually souped it up with an armature that has more wire wound around it and a new diode pack.  I think it's a Dodge 120 or a 136 case though.

Just check around on ebay for rebuilders.  The smaller shops are a good value and usually have higher rated alts then the OEM's.  Otherwise, save a few bucks and get a higher amp OEM.