2012+ JK Alternator Performance Curve?

[Capt Jon]

Good morning all,

I am trying to find information on the performance curve (amps v. engine rpm) for the stock 160 amp alternators on the pentastar JK's.

My google **** is not strong today, and I can't find anything. Does anybody have a source for this?

Thanks,

Jon

 

[FreeManDan]

It's 80 amps off idle for the JKs with the 3.6.
I've been told by car audio guys that an alternator could produce 30-40% of its max at idle (excluding those meant for old carbureted engines) and the industry standard is to test them at 2000rmp.
Maybe the 30-40% doesn't jive perfectly, but when in doubt low ball it, and upgrade cables, because if you need that much juice you could melt wires.

If you need more then stock, then
Just
Empty
Every
Pocket

http://www.qualitypowerauto.com/item_539/Jeep-Wrangler.htm