SR underdrive pulleys any good?? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

2.240s · 02-05-2006, 06:04 PM

I have a redtop s15 t28 ,fmic,test pipe-exhaust,toda fly wheel,exedy clutch
koyo dual fans,radiator,255 fuel pump. I am looking in to UR under drive
pulley.Is this a good idea or should i add a water pump pulley also?
I hear mixed views on underdriving the crank.Should i go with greddy?
This is a drift car .And i notice alot of the japanese Kats do not run a underdrive lighter pulley for the crank, .Is it safe to and is it worth the $$
179 bucks for a UR pulley.

ryangreg · 02-05-2006, 08:25 PM

Just use the factory pulley...its a vibration dampner, and thats why the jap kats dont yank them.

wootwoot · 02-05-2006, 09:09 PM

Greddy are not underdrive

02-05-2006, 06:04 PM	#1
2.240s Zilvia Member Join Date: Jul 2005 Location: LOS ANGELES Posts: 230 Trader Rating: (0) Feedback Score: 0 reviews	SR underdrive pulleys any good?? I have a redtop s15 t28 ,fmic,test pipe-exhaust,toda fly wheel,exedy clutch koyo dual fans,radiator,255 fuel pump. I am looking in to UR under drive pulley.Is this a good idea or should i add a water pump pulley also? I hear mixed views on underdriving the crank.Should i go with greddy? This is a drift car .And i notice alot of the japanese Kats do not run a underdrive lighter pulley for the crank, .Is it safe to and is it worth the $$ 179 bucks for a UR pulley.

02-05-2006, 09:09 PM	#3
wootwoot Post Whore! Join Date: Jan 2004 Location: sarasota florida biatch Age: 39 Posts: 3,850 Trader Rating: (0) Feedback Score: 0 reviews	Greddy are not underdrive __________________ I'm from Florida so I'm probably a bit more strange than you

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02-05-2006, 08:25 PM	#2
ryangreg Zilvia Member Join Date: Feb 2006 Location: exeter Posts: 216 Trader Rating: (0) Feedback Score: 0 reviews	Just use the factory pulley...its a vibration dampner, and thats why the jap kats dont yank them.