What is the specs on this alternator? - JeepForum.com
Search  
Sign Up   Today's Posts
User: Pass: Remember?
Advertise Here
Jeep Home Jeep Forum Jeep Classifieds Jeep Registry JeepSpace Jeep Reviews Jeep Gallery Jeep Clubs Jeep Groups Jeep Videos Jeep Events Jeep Articles
Go Back JeepForum.com > Models > Jeep Grand Cherokee & Commander Forums > ZJ Grand Cherokee Forum > What is the specs on this alternator?

NEW JK WRANGLER GRAB BARS NOW at ROCKRIDGE4WDROCKRIDGE4WD Introduces a NEW Jeep Wrangler JK *led* tail Ruffstuff XJ Unirail Channel Reinforcement....

Reply
Unread 07-06-2013, 07:29 PM   #1
davidtownsend
Registered User
2006 WK 
 
Join Date: Jul 2012
Location: Elkton, Maryland
Posts: 614
What is the specs on this alternator?

I got this at the junk yards while back and I told the guy I needed a 5.9 alternator. He came from the back with this one and I couldn't find any specs online but I'm using my phone so maybe someone on here can help me out. Here is a pic of the sticker with the numbers on it. Thanks for the help!

1373156948863.jpg  
__________________
1994 Jeep Grand Cherokee 5.2L Limited
2006 Jeep Grand Cherokee Overland 5.7L Hemi
davidtownsend is online now   Reply With Quote Quick reply to this message
Unread 07-06-2013, 07:48 PM   #2
WhiteOut
Web Wheeler
 
WhiteOut's Avatar
1998 ZJ 
 
Join Date: Dec 2007
Posts: 8,197
121000-3470 comes back as 90AMP alt.

-4170 and -4171 are 136 amp from the 5.2 or 5.9
WhiteOut is online now   Reply With Quote Quick reply to this message
Unread 07-06-2013, 08:04 PM   #3
davidtownsend
Registered User
2006 WK 
 
Join Date: Jul 2012
Location: Elkton, Maryland
Posts: 614
Quote:
Originally Posted by WhiteOut View Post
121000-3470 comes back as 90AMP alt.
Thanks man! I should have known they didn't have one. I have one more question. I got a almost new alternator from the jy and it has a bigger pulley on it. I looked at the one on my zj and it had a smaller pulley on it. They are both 7 grooves but the diameters are different the one I have on is smaller and the junk yard alternator. Would the alternator with the smaller diameter spin faster?
__________________
1994 Jeep Grand Cherokee 5.2L Limited
2006 Jeep Grand Cherokee Overland 5.7L Hemi
davidtownsend is online now   Reply With Quote Quick reply to this message
Unread 07-06-2013, 08:06 PM   #4
WhiteOut
Web Wheeler
 
WhiteOut's Avatar
1998 ZJ 
 
Join Date: Dec 2007
Posts: 8,197
If they are both the same number of grooves you should be ok. You'll need an impact to get the pulley off though.
WhiteOut is online now   Reply With Quote Quick reply to this message
Unread 07-06-2013, 08:12 PM   #5
davidtownsend
Registered User
2006 WK 
 
Join Date: Jul 2012
Location: Elkton, Maryland
Posts: 614
I just want the most RPMs out of the alternator as possible.
__________________
1994 Jeep Grand Cherokee 5.2L Limited
2006 Jeep Grand Cherokee Overland 5.7L Hemi
davidtownsend is online now   Reply With Quote Quick reply to this message
Unread 07-06-2013, 09:06 PM   #6
5-90
Registered User
1988 XJ Cherokee 
 
Join Date: Sep 2006
Location: San Jose, CA, Hammerspace
Posts: 5,344
Quote:
Originally Posted by davidtownsend View Post
I just want the most RPMs out of the alternator as possible.
What do you mean? The alternator's a generator, not a motor. You can hook it up all you want, she won't spin...

"You can't get what you want until you know what you want."
__________________
"recon" (sic - reckon)(tm) "hihgly"(tm) "seceed"(tm)
"Outback AIDS - Alcohol-Induced Dizzy Spells"
5-90 is offline   Reply With Quote Quick reply to this message
Unread 07-06-2013, 09:20 PM   #7
davidtownsend
Registered User
2006 WK 
 
Join Date: Jul 2012
Location: Elkton, Maryland
Posts: 614
The faster the alternator spins the more juice it produces right?
__________________
1994 Jeep Grand Cherokee 5.2L Limited
2006 Jeep Grand Cherokee Overland 5.7L Hemi
davidtownsend is online now   Reply With Quote Quick reply to this message
Unread 07-07-2013, 08:32 AM   #8
AmishFury
Registered User
1997 ZJ 
 
Join Date: Oct 2011
Location: Evansville, IN
Posts: 632
Quote:
Originally Posted by 5-90 View Post
What do you mean? The alternator's a generator, not a motor. You can hook it up all you want, she won't spin...

"You can't get what you want until you know what you want."
i think he means he wants to put a smaller size pulley on the alternator to make it spin faster when the engine is running
AmishFury is offline   Reply With Quote Quick reply to this message
Unread 07-07-2013, 08:49 AM   #9
davidtownsend
Registered User
2006 WK 
 
Join Date: Jul 2012
Location: Elkton, Maryland
Posts: 614
Quote:
Originally Posted by AmishFury View Post

i think he means he wants to put a smaller size pulley on the alternator to make it spin faster when the engine is running
Yes! Will it spin faster with the smaller one?
__________________
1994 Jeep Grand Cherokee 5.2L Limited
2006 Jeep Grand Cherokee Overland 5.7L Hemi
davidtownsend is online now   Reply With Quote Quick reply to this message
Unread 07-07-2013, 09:12 AM   #10
dylantheheeler
Registered User
1996 ZJ 
 
Join Date: Feb 2010
Location: Smithville, Texas
Posts: 246
Yes it will.


Sent from AutoGuide.com Free App
__________________
yo vivo. yo voy. yo soy. Jeep.
I live. I ride. I am. Jeep.
dylantheheeler is offline   Reply With Quote Quick reply to this message
Unread 07-07-2013, 01:35 PM   #11
davidtownsend
Registered User
2006 WK 
 
Join Date: Jul 2012
Location: Elkton, Maryland
Posts: 614
Awesome! Thank you guys for the help.
__________________
1994 Jeep Grand Cherokee 5.2L Limited
2006 Jeep Grand Cherokee Overland 5.7L Hemi
davidtownsend is online now   Reply With Quote Quick reply to this message
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the JeepForum.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.
Note: All free e-mails have been banned due to mis-use. (Yahoo, Gmail, Hotmail, etc.)
Don't have a non-free e-mail address? Click here for a solution: Manual Account Creation
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.


Thread Tools






Jeep, Wrangler, Cherokee, Grand Cherokee, and other models are copyrighted and trademarked to Jeep/Chrysler Corporation. JeepForum.com is not in any way associated with Jeep or the Chrysler Corp.