JK-Forum.com - The top destination for Jeep JK and JL Wrangler news, rumors, and discussion

Notices
Stock JK Tech Bulletin board forum regarding issues with OE (original equipment) components of the Jeep JK Wrangler (Rubicon, Sahara, Unlimited and X) such as factory suspension parts, engine, transmission, body parts, interior fixtures and the on-board computer.

stock alternator

Thread Tools
 
Old Dec 9, 2010 | 02:08 PM
Share
  #1  
jacksonbmx23's Avatar
jacksonbmx23
Thread Starter
JK Enthusiast
 
Joined: Sep 2010
Posts: 220
Likes: 0
From: Buford, Georgia
Default stock alternator
does anyone know the amperage of the stock jk alternator? and how many watts can it push out
Reply
0
Old Dec 9, 2010 | 02:24 PM
Share
  #2  
TheQuiet1's Avatar
TheQuiet1
JK Enthusiast
 
Joined: Jan 2010
Posts: 281
Likes: 1
From: NC
Default
Originally Posted by jacksonbmx23
does anyone know the amperage of the stock jk alternator? and how many watts can it push out
My 07 Unlimited is 160 amp. A 2009 was 140 amps.... not positive what the 2010 is but I'm guessing it's 140 amp. No clue what wattage they push.
Reply
0
Old Dec 9, 2010 | 02:35 PM
Share
  #3  
ronjenx's Avatar
ronjenx
JK Jedi Master
15 Year Member
 
Joined: Feb 2008
Posts: 12,907
Likes: 185
From: Maine
Default
My 2008 is 160 amps.
The 2008 service manual lists only the 160 amp for the 3.8L engine.

DC amps x volts = 1920 watts.
Last edited by ronjenx; Dec 9, 2010 at 02:37 PM.
Reply
0
Old Dec 9, 2010 | 02:42 PM
Share
  #4  
Enzo's Avatar
Enzo
JK Super Freak
 
Joined: Jun 2010
Posts: 1,130
Likes: 1
From: Howard Beach, NY
Default
Originally Posted by TheQuiet1
My 07 Unlimited is 160 amp. A 2009 was 140 amps.... not positive what the 2010 is but I'm guessing it's 140 amp. No clue what wattage they push.
wattage=volts x Amps
wattage= 12 x 140
wattage= 1680

at least this is how it works with electrical work, and electronics
Reply
0
Old Dec 9, 2010 | 02:46 PM
Share
  #5  
jacksonbmx23's Avatar
jacksonbmx23
Thread Starter
JK Enthusiast
 
Joined: Sep 2010
Posts: 220
Likes: 0
From: Buford, Georgia
Default
hmm so if i have a 900 watt rms amp wired at 2ohms the laternator shouldnt struggle to power it right?
Reply
0
Old Dec 9, 2010 | 02:56 PM
Share
  #6  
ronjenx's Avatar
ronjenx
JK Jedi Master
15 Year Member
 
Joined: Feb 2008
Posts: 12,907
Likes: 185
From: Maine
Default
Originally Posted by jacksonbmx23
hmm so if i have a 900 watt rms amp wired at 2ohms the laternator shouldnt struggle to power it right?
Isn't the rating on an amp what it pushes to the speakers?

If so, you need to know what the amp draws from the power source at full load.
Reply
0
Old Dec 9, 2010 | 02:58 PM
Share
  #7  
jacksonbmx23's Avatar
jacksonbmx23
Thread Starter
JK Enthusiast
 
Joined: Sep 2010
Posts: 220
Likes: 0
From: Buford, Georgia
Default
Originally Posted by ronjenx
Isn't the rating on an amp what it pushes to the speakers?

If so, you need to know what the amp draws from the power source at full load.
the amp pulls 1800 watts peak
Reply
0

Trending Topics

Old Dec 9, 2010 | 02:59 PM
Share
  #8  
jacksonbmx23's Avatar
jacksonbmx23
Thread Starter
JK Enthusiast
 
Joined: Sep 2010
Posts: 220
Likes: 0
From: Buford, Georgia
Default
Originally Posted by ronjenx
Isn't the rating on an amp what it pushes to the speakers?

If so, you need to know what the amp draws from the power source at full load.
1800 max but 900 is the average it pulls
Reply
0
Old Dec 9, 2010 | 03:03 PM
Share
  #9  
TheQuiet1's Avatar
TheQuiet1
JK Enthusiast
 
Joined: Jan 2010
Posts: 281
Likes: 1
From: NC
Default
Originally Posted by ronjenx
My 2008 is 160 amps.
The 2008 service manual lists only the 160 amp for the 3.8L engine.

DC amps x volts = 1920 watts.

Originally Posted by Enzo
wattage=volts x Amps
wattage= 12 x 140
wattage= 1680

at least this is how it works with electrical work, and electronics

Thanks for the refresher fella's. I knew that but was having a "moment"... that's my exscuse and I'm sticking to it
Reply
0
Back to Subforum
Stock JK Tech
View Next Unread
Power running boards for JK?




Advanced Search

All times are GMT -8. The time now is 12:22 PM.