AMS underdrive Pulley

Zoren 370 · 07-21-2012, 11:15 PM

Anyone here have tried or installed AMS light weight pulley?
Any issues or gains? Thanks

370ZilverZ · 07-22-2012, 09:36 AM

I installed an NST set and found the quicker throttle response well worth it. Simple install and with just a lightweight exchange you don't need a belt change, but underdrive is more responsive IMHO.

Zoren 370 · 07-22-2012, 10:08 AM

Quote:

Originally Posted by 370ZilverZ

I installed an NST set and found the quicker throttle response well worth it. Simple install and with just a lightweight exchange you don't need a belt change, but underdrive is more responsive IMHO.

The NST comes with the underdrive right? The one you place at the crank?
Do I really need to put in the alternator pulley as well?
So no need to replace the OEM belt? Thanks

370ZilverZ · 07-22-2012, 03:14 PM

The NST is an underdrive, so even if you don't replace the alternator pulley, you neen to replace the belt. It is better to change to alternator pulley too, just incase you dicide to put some amps in your car later on. Your alternator will not turn as fast otherwise and not supply sufficient current to keep your headlights from flickering to the beat of your sub-bass. It's not that big a deal to change it. I didn't pull the radiator or anything up front.
There is a little DIY in my journal near the beginning when I installed it.

07-21-2012, 11:15 PM	#1 (permalink)
Zoren 370 A True Z Fanatic Join Date: Mar 2012 Location: FL Posts: 11,018 Drives: 11 Nissan 370 M6 Rep Power: 1913653	AMS underdrive Pulley Anyone here have tried or installed AMS light weight pulley? Any issues or gains? Thanks

07-22-2012, 09:36 AM	#2 (permalink)
370ZilverZ A True Z Fanatic Join Date: Dec 2011 Location: DFW, TX Age: 66 Posts: 2,321 Drives: '11 BMW Z4 Rep Power: 18	I installed an NST set and found the quicker throttle response well worth it. Simple install and with just a lightweight exchange you don't need a belt change, but underdrive is more responsive IMHO. __________________ 370ZilverZ Journal BMW Z4

07-22-2012, 03:14 PM	#4 (permalink)
370ZilverZ A True Z Fanatic Join Date: Dec 2011 Location: DFW, TX Age: 66 Posts: 2,321 Drives: '11 BMW Z4 Rep Power: 18	The NST is an underdrive, so even if you don't replace the alternator pulley, you neen to replace the belt. It is better to change to alternator pulley too, just incase you dicide to put some amps in your car later on. Your alternator will not turn as fast otherwise and not supply sufficient current to keep your headlights from flickering to the beat of your sub-bass. It's not that big a deal to change it. I didn't pull the radiator or anything up front. There is a little DIY in my journal near the beginning when I installed it. __________________ 370ZilverZ Journal BMW Z4

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