STILLEN lightweight crank pulley

RCZ · 05-29-2009, 05:56 PM

I still havent installed mine, I may swap it with a UD one.

Phimosis · 05-29-2009, 07:19 PM

Quote:

Originally Posted by Josh@STILLEN

Curious on why lightweight vs. U/D for you Phimosis?

(and thank you for your orders.. you're practically a rolling STILLEN billboard!)

LOL..... I'm waiting for that damn supercharger!

Josh@STILLEN · 05-29-2009, 07:22 PM

So am I! You have no idea. I get to see the progress and can't talk about it..

semtex · 05-29-2009, 08:02 PM

Aw...sure you can, Josh. We'll be discreet, won't we guys?

Josh@STILLEN · 05-29-2009, 08:27 PM

I'm not saying that some lucky owners that came by picking up product and got the tour haven't seen our progress.. but they signed a release to give up their car if they spoke about it to the forums..

Crash · 05-30-2009, 07:29 AM

By the way, I was looking at the light-weight pullie, (not the ud pullie) and was wondering if you're seeing about 8-10HP from the crank or to the ground. I'd be uber impressed (and probably still skeptic) if it were to the ground.

BTW, hate to dig up a dead horse to kick, but have you seen then RST-V8 putting out 500BHP? 2.4L weighs 90Kg dressed! Talk about power-to-weight! <-- I'd take one of these over a plastic motor any day.

semtex · 05-30-2009, 02:07 PM

Crash, this thread may interest you if you haven't seen it already: Stillen Underdrive Pulley - Review/Pics/Dyno/Vid

Crash · 05-30-2009, 10:19 PM

Cool... Looks like if the U/D pulley is gaining 5+whp, the lightened wheel would gain maybe 2-3. Doesn't seem worth it.

Thanks. Hadn't seen that thread.

KingDavid · 05-31-2009, 03:39 AM

Quote:

Originally Posted by Crash

Cool... Looks like if the U/D pulley is gaining 5+whp, the lightened wheel would gain maybe 2-3. Doesn't seem worth it.

Thanks. Hadn't seen that thread.

Power isn't everything and that isn't the function of a flywheel.

black09Z · 05-31-2009, 01:06 PM

true dat!

semtex · 05-31-2009, 01:49 PM

Quote:

Originally Posted by KingDavid

Power isn't everything and that isn't the function of a flywheel.

We're talking about pulleys in this thread, not flywheels.

Crash · 05-31-2009, 04:54 PM

HAHA... Exactly. I was thinking, "I didn't say Flywheel, did I?"

Believe me, a lightweight flywheel makes a big difference. If you're making serious power though, it becomes the weak link in the chain. For 450BHP and down, lightweight flywheels are great.

But as far as the pulley goes, it's not going to make enough difference when you're still close to stock power. Spinning mass is serious business, but when you're only gaining 2-3 HP to the wheels, it's not worth it. An underdrive pulley is different, though.

black09Z · 06-07-2009, 11:24 AM

so what are the pros and cons of the underdrive?

travisjb · 06-07-2009, 01:27 PM

pros - more hp, possible faster rev climb (not sure this is confirmed)
cons - none we know of except potential dispute with nissan next time you bring it in for warranty... or extra work to swap back before you bring in for warranty

imag · 06-07-2009, 01:52 PM

Quote:

Originally Posted by travisjb

pros - more hp, possible faster rev climb (not sure this is confirmed)
cons - none we know of except potential dispute with nissan next time you bring it in for warranty... or extra work to swap back before you bring in for warranty

One other con that should be mentioned - you won't get as much current to your battery through the alternator (underdrive means lower belt speed). This is probably only an issue if you have a high-current audio system. I assume the lower speed to the power steering pump doesn't make any difference...

05-29-2009, 08:02 PM	#79 (permalink)
semtex A True Z Fanatic Join Date: Jan 2009 Location: Behind enemy lines Age: 54 Posts: 5,995 Drives: People to drink Rep Power: 32	Aw...sure you can, Josh. We'll be discreet, won't we guys? __________________ "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.

05-30-2009, 07:29 AM	#81 (permalink)
Crash A True Z Fanatic Join Date: Dec 2008 Location: Los Angeles Posts: 1,853 Drives: 02 Corvette Z06 Rep Power: 590	By the way, I was looking at the light-weight pullie, (not the ud pullie) and was wondering if you're seeing about 8-10HP from the crank or to the ground. I'd be uber impressed (and probably still skeptic) if it were to the ground. BTW, hate to dig up a dead horse to kick, but have you seen then RST-V8 putting out 500BHP? 2.4L weighs 90Kg dressed! Talk about power-to-weight! <-- I'd take one of these over a plastic motor any day. __________________ 2002 Corvette Z06 - Totaled 2003 Corvette Z06 50th Anniversary

05-30-2009, 02:07 PM	#82 (permalink)
semtex A True Z Fanatic Join Date: Jan 2009 Location: Behind enemy lines Age: 54 Posts: 5,995 Drives: People to drink Rep Power: 32	Crash, this thread may interest you if you haven't seen it already: 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.

05-30-2009, 10:19 PM	#83 (permalink)
Crash A True Z Fanatic Join Date: Dec 2008 Location: Los Angeles Posts: 1,853 Drives: 02 Corvette Z06 Rep Power: 590	Cool... Looks like if the U/D pulley is gaining 5+whp, the lightened wheel would gain maybe 2-3. Doesn't seem worth it. Thanks. Hadn't seen that thread. __________________ 2002 Corvette Z06 - Totaled 2003 Corvette Z06 50th Anniversary

05-31-2009, 04:54 PM	#87 (permalink)
Crash A True Z Fanatic Join Date: Dec 2008 Location: Los Angeles Posts: 1,853 Drives: 02 Corvette Z06 Rep Power: 590	HAHA... Exactly. I was thinking, "I didn't say Flywheel, did I?" Believe me, a lightweight flywheel makes a big difference. If you're making serious power though, it becomes the weak link in the chain. For 450BHP and down, lightweight flywheels are great. But as far as the pulley goes, it's not going to make enough difference when you're still close to stock power. Spinning mass is serious business, but when you're only gaining 2-3 HP to the wheels, it's not worth it. An underdrive pulley is different, though. __________________ 2002 Corvette Z06 - Totaled 2003 Corvette Z06 50th Anniversary

05-29-2009, 05:56 PM	#76 (permalink)
RCZ A True Z Fanatic Join Date: Nov 2008 Location: Miami Posts: 6,403 Drives: '09 370Z Rep Power: 1119	I still havent installed mine, I may swap it with a UD one.

05-29-2009, 07:22 PM	#78 (permalink)
Josh@STILLEN The370Z.com Sponsor Join Date: Dec 2008 Location: Costa Mesa, CA Posts: 1,197 Drives: 2004 G35 Coupe 6MT Rep Power: 534	So am I! You have no idea. I get to see the progress and can't talk about it..

05-29-2009, 08:27 PM	#80 (permalink)
Josh@STILLEN The370Z.com Sponsor Join Date: Dec 2008 Location: Costa Mesa, CA Posts: 1,197 Drives: 2004 G35 Coupe 6MT Rep Power: 534	I'm not saying that some lucky owners that came by picking up product and got the tour haven't seen our progress.. but they signed a release to give up their car if they spoke about it to the forums..

05-31-2009, 01:06 PM	#85 (permalink)
black09Z Base Member Join Date: Mar 2009 Location: killeen tx Posts: 202 Drives: black 09 370Z 6spd Rep Power: 16	true dat!

06-07-2009, 11:24 AM	#88 (permalink)
black09Z Base Member Join Date: Mar 2009 Location: killeen tx Posts: 202 Drives: black 09 370Z 6spd Rep Power: 16	so what are the pros and cons of the underdrive?

06-07-2009, 01:27 PM	#89 (permalink)
travisjb A True Z Fanatic Join Date: Jan 2009 Location: GSO Posts: 2,803 Drives: VIR Rep Power: 188	pros - more hp, possible faster rev climb (not sure this is confirmed) cons - none we know of except potential dispute with nissan next time you bring it in for warranty... or extra work to swap back before you bring in for warranty __________________ 2009 370Z #104 For Sale

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