Help please LS3 alternator on a L99???? - Page 2 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Low Saturn · 01-11-2015, 05:50 PM

Quote:

Originally Posted by Rocky1974

Ha! Ha! You're probably right, but there must be some technical reason. A clutch on the alternator would have this engages so the PCM can engage or disengage the alternator. Since the major difference between a LS3 and a L99 is AFM, I'd assume that it has something to do with that. I'm wondering if they disengage the alternator to reduce the load on the engine while AFM is kicking in or something.......I have the factory shop manuals for my car, I'll have to see if there's anything in there about this.

I don't think the clutch is electronically controlled. From what I have been reading, it knows when there is a sudden change in RPM and disengages or decouples, that is probably why it is also referred to as a decoupler. Letting the alternator decouple from the belt drive and free spin for a brief moment. In other instances it can also dampen vibration.

two_wheel_mayhem · 01-11-2015, 07:40 PM

It's just a slipper clutch, frees up a minute amount of power, like a fan clutch does.

Rocky1974 · 01-12-2015, 12:46 PM

Quote:

Originally Posted by Low Saturn

I don't think the clutch is electronically controlled. From what I have been reading, it knows when there is a sudden change in RPM and disengages or decouples, that is probably why it is also referred to as a decoupler. Letting the alternator decouple from the belt drive and free spin for a brief moment. In other instances it can also dampen vibration.

Yeah, I googled it and came to pretty much the same conclusion......

MMC · 01-12-2015, 01:16 PM

They used these for vibration on the 3.9l Impala V6 with AFM also.

Robbs1le · 04-20-2015, 06:36 PM

i have a m6 2014 1le with a supercharger and it has spun 2 alternator pulleys free . i need some kind of clutched pulley cause it happens on hard shifts at high rpms at the track. can i put this alternator on my m6 car? or can i buy just this pulley?

JCunningham · 04-21-2015, 02:44 AM

Robbs1le you should start a new thread. Im thinking red lock tite on the pully might be enough.

uihsongshi · 04-21-2015, 04:45 AM

The fancy pulley isn't really necessary for the car to operate correctly.

01-11-2015, 07:40 PM	#16
two_wheel_mayhem Would rather be riding Drives: No car no more Join Date: Jul 2009 Location: Indiana Posts: 2,750	It's just a slipper clutch, frees up a minute amount of power, like a fan clutch does. __________________ No dog in this fight anymore. 5th Gen owner 2009-2016.

01-12-2015, 01:16 PM	#18
MMC Drives: CGM 2SS/RS, 1987 & 2014 Silverado Join Date: Oct 2010 Location: Spencerport, NY Posts: 1,012	They used these for vibration on the 3.9l Impala V6 with AFM also. __________________

04-21-2015, 02:44 AM	#20
JCunningham Drives: 2017 2SS M6 Join Date: Jun 2013 Location: WNY Posts: 7,069	Robbs1le you should start a new thread. Im thinking red lock tite on the pully might be enough. __________________ real ZL1 wheels and brakes, 285/305 Michelin Pilot Super Sports, Pray ported Intake manifold, Soler Throttle Body, Rotofab intake, EFI Tuning Flex fuel kit, full American Racing Headers Exhaust, 1 7/8" w/ cats H pipe and mufflers. Full 1LE suspension, with BMR adjustable sway bars and links, GM aluminum cradle bushings, Hurst shifter with lighter reverse spring, TWM shifter knob, Tick level 1 transmission. I should have bought a ZL1

04-20-2015, 06:36 PM	#19
Robbs1le Drives: 2017 zl1. Headers intake pulley e Join Date: Oct 2014 Location: Okc Posts: 174 View My Garage	i have a m6 2014 1le with a supercharger and it has spun 2 alternator pulleys free . i need some kind of clutched pulley cause it happens on hard shifts at high rpms at the track. can i put this alternator on my m6 car? or can i buy just this pulley?

04-21-2015, 04:45 AM	#21
uihsongshi Drives: bmw Join Date: Apr 2015 Location: m3 Posts: 4	The fancy pulley isn't really necessary for the car to operate correctly.