Lightweight crank and alternator pulley

Zamir370z · 10-02-2011, 04:29 AM

If I replace the OEM pulley to the lightweight pulley would that be a good idea? Will the hp increase? Are there any disadvantages? Please advise thank you..

CBRich · 10-03-2011, 11:07 AM

Lots of threads on this. You can search. But the general idea is that there is power to be gained but proper installation is a must.

semtex · 10-03-2011, 11:39 AM

FYI to the OP - I included dyno results when I reviewed way back when:

Stillen Underdrive Pulley - Review/Pics/Dyno/Vid

Zamir370z · 10-04-2011, 08:28 AM

So basically there will be no disadvantage by installing those lightweight pulley. Just my thought were I lighten one side and may cause imbalance on the gearbox side( other side of the crankshaft) FYI my gearbox are automatic. Thank you for sharing and info

Trips · 10-04-2011, 09:46 AM

Moved to the right section

Methodical4u · 10-04-2011, 01:57 PM

what's the difference in power between the entire set of pulleys and just the underdrive?

10-02-2011, 04:29 AM	#1 (permalink)
Zamir370z Base Member Join Date: Sep 2011 Location: Brunei Posts: 24 Drives: Nissan 370Z 2009 (A) Rep Power: 13	Lightweight crank and alternator pulley If I replace the OEM pulley to the lightweight pulley would that be a good idea? Will the hp increase? Are there any disadvantages? Please advise thank you..

10-03-2011, 11:39 AM	#3 (permalink)
semtex A True Z Fanatic Join Date: Jan 2009 Location: Behind enemy lines Age: 53 Posts: 5,995 Drives: People to drink Rep Power: 32	FYI to the OP - I included dyno results when I reviewed way back when: Stillen Underdrive Pulley - Review/Pics/Dyno/Vid __________________ "There are no small accidents on this circuit." -- Ayrton Senna 316.8whp & 248 ft/lbs (Dyno Dynamics) \| 319whp & 256 ft/lbs (DynoJet) (04/23/10) Stillen G3 CAI, CBE, Pulley / F.I. LTH / GTSpec Ladder Brace / Setrab Oil Cooler / UpRev-tuned by Forged Perf.

10-04-2011, 09:46 AM	#5 (permalink)
Trips Administrator Join Date: May 2009 Location: Disneyland, Ca Posts: 8,728 Drives: 🔰 Rep Power: 10	Moved to the right section __________________

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10-03-2011, 11:07 AM	#2 (permalink)
CBRich A True Z Fanatic Join Date: Apr 2009 Location: SC Posts: 2,464 Drives: 370Z Rep Power: 544	Lots of threads on this. You can search. But the general idea is that there is power to be gained but proper installation is a must.

10-04-2011, 08:28 AM	#4 (permalink)
Zamir370z Base Member Join Date: Sep 2011 Location: Brunei Posts: 24 Drives: Nissan 370Z 2009 (A) Rep Power: 13	So basically there will be no disadvantage by installing those lightweight pulley. Just my thought were I lighten one side and may cause imbalance on the gearbox side( other side of the crankshaft) FYI my gearbox are automatic. Thank you for sharing and info

10-04-2011, 01:57 PM	#6 (permalink)
Methodical4u A True Z Fanatic Join Date: Jun 2011 Location: Maryland Posts: 1,393 Drives: 11 370 6mt pw w/sp Rep Power: 15	what's the difference in power between the entire set of pulleys and just the underdrive?