Does anyone know how many amps our alts put out at different rpms im getting a new one and want to make sure that it puts out enough at idle.

 

At different RPM's, I have no idea. I'm getting a rebuilt alt put in today, and all the autoparts stores I called have them rated at 110 A. Even the dealer couldn't tell me how many amps the Nissan alt produced.

 

Silver's right. Ballpark 110 - 120A.

 

Thats kinda gay but im thinking about purchasing a 200 amp alt that makes 100 at idle do you think that it will be okay with 2200 rms thanks a lot your all really helping my decision and making it easier.

 

where are you going to get the 200a alternator from?

 

They make aftermarket ones. They sometimes call them welding alts and they are usually for offroad vehicles that have lots of aux power demands (like welders). I very very briefly looked into them and decided that I didn't want to mess with getting one to fit.

 

i think deezo is running an aftermarket one. ask him.

 

Actually i don't think alt's put out very much at idle speed.... My alt is rated at 125amps, probaly puts out 20-40amps at idle 100 or so at 2000-4000rpms and 125 at 6000rpms...... I know for a fact that what an amp is rated at is for the maximum rpms.. (125amp alt. puts out 125amps at 6000rpms)

 

I thought the alternator put what they say at 2k rpms and above?

 

Got a pretty good deal on a group buy from Realmofexcursion.com (http://www.excessiveamperage.com/) $390 shipped for a 200 amp alt that makes 100 at idle.

 

Im pretty sure max output is like 2500+ could be wrong.