STILLEN 370Z Underdrive Pulleys Released

Josh@STILLEN · 04-02-2009, 03:02 PM

Hey guys, wanted to drop the news of the STILLEN Underdrive Pulleys that we've released today (along with the Standard Pulley we've been shipping for months).

From the STILLEN Product Page

Quote:

STILLEN has long manufactured precision pulleys for our supercharger kits. We have used this expertise to produce a new line of high performance crank and accessory pulleys.

Each pulley is machined from 6061 aerospace grade billet aluminum with a bold new design to maximize performance, strength and minimum weight. 304 stainless steel sleeves are used for main seal contact points for durability. Stock timing marks are maintained and keyways are precision broached. All pulleys are CNC turned, milled and balanced based on computer generated designs.

Underdrive is approximately 20%, not enough to effect your charging system or A/C (unless you have a MONSTER audio system.. it would need to be BIG.. then you should consider the lightweight standard pulley). Underdrive pulley does require a shorter belt, which we have in stock as well (top quality Gates).

Standard pulleys for those who don't want to underdrive the accessories, and for those planning to go the supercharger route (as you wouldn't want to underdrive the supercharger, which is also run off the crank). Standard pulley doesn't require a specific belt, but if you're already in there with the belt off, you should consider just replacing it with a quality Gates belt. Up to you.

Good news is we put the pulleys on special this month, and are including the new underdrive pulley with it. Crazy cheap pricing!

STILLEN : STILLEN Performance Lightweight Pulleys

SoCal 370Z · 04-02-2009, 03:07 PM

Oh gawd, now we have listen to Semtex raving about these too!

Nice stuff Josh!

semtex · 04-02-2009, 03:12 PM

ssqpolo · 04-02-2009, 03:23 PM

so...which one should i get, underdrive or lightweight (not planning on supercharging...have a system, but nothing monster)

Josh@STILLEN · 04-02-2009, 03:40 PM

I would go with the underdrive for maximum gains with your plans..

if you decide to supercharge later you can always swap it back to the lightweight standard one.. I'm sure dumping it in the classifieds would be easy.

wstar · 04-02-2009, 03:45 PM

Damn you Stillen! My shopping list keeps growing...

Skorch · 04-02-2009, 03:55 PM

Any dyno results?

RCZ · 04-02-2009, 05:18 PM

95% sure I'm buying.

ZforMe · 04-02-2009, 08:04 PM

Anyone see anything wrong with doing this as a first mod (since it's the cheapest)?

ssqpolo · 04-02-2009, 08:24 PM

nothing wrong, but i would do the intakes or the HFCs first (jmo)

Josh@STILLEN · 04-02-2009, 10:35 PM

Quote:

Originally Posted by ZforMe?

Anyone see anything wrong with doing this as a first mod (since it's the cheapest)?

Not at all... this is a modification that will continue to benefit with everything added..

The less effort it takes to get that pulley spinning, the better.. and quicker..

2bits · 04-03-2009, 12:50 AM

I hear AC and alternator mentioned, but what about other systems driven off the shaft? Power steering? Or is PS electric on the Z?

Josh@STILLEN · 04-03-2009, 01:09 AM

Power steering is crank driven.. but no noticeable effect at RPM..

Some very very sensitive people have reported a slight increase in the effort it takes to turn the wheel when stopped or at less than 5mph speeds.. but that effect went away in less than a week as it becomes normal.

Once the revs are above idle, there is no discernible difference..

Forumite · 04-03-2009, 09:51 AM

Quote:

Originally Posted by ssqpolo

nothing wrong, but i would do the intakes or the HFCs first (jmo)

HFCs?

semtex · 04-03-2009, 10:33 AM

High Flow Cats

04-02-2009, 03:07 PM	#2 (permalink)
SoCal 370Z A True Z Fanatic Join Date: Feb 2009 Location: US of A Posts: 2,842 Drives: Answers Rep Power: 33	Oh gawd, now we have listen to Semtex raving about these too! Nice stuff Josh! __________________ ( Click to show/hide ) Why I NEVER say NO to the Panda Lou Fusz!!! Last edited by SoCal 370Z; 04-02-2009 at 03:12 PM.

04-02-2009, 03:12 PM	#3 (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	__________________ "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.

04-02-2009, 03:45 PM	#6 (permalink)
wstar A True Z Fanatic Join Date: Mar 2009 Location: Houston, TX Posts: 4,024 Drives: too slow Rep Power: 3594	Damn you Stillen! My shopping list keeps growing... __________________ 7AT Track Car! Journal thread / Car setup details

04-02-2009, 03:55 PM	#7 (permalink)
Skorch Enthusiast Member Join Date: Feb 2009 Location: Phoenix, AZ Posts: 469 Drives: 2012 370Z Rep Power: 540	Any dyno results? __________________ '12 370Z + Sport \| Stillen Gen3 Intakes \| Stillen UD Pulley \| Motordyne M370 \| FI Exhaust \| FI HFCs \| 4.08 Gears \| Uprev tuned

04-03-2009, 10:33 AM	#15 (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	High Flow Cats __________________ "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.

04-02-2009, 03:23 PM	#4 (permalink)
ssqpolo Track Member Join Date: Jan 2009 Location: Florida Posts: 882 Drives: '12 Black Nismo Rep Power: 267	so...which one should i get, underdrive or lightweight (not planning on supercharging...have a system, but nothing monster)

04-02-2009, 03:40 PM	#5 (permalink)
Josh@STILLEN The370Z.com Sponsor Join Date: Dec 2008 Location: Costa Mesa, CA Posts: 1,197 Drives: 2004 G35 Coupe 6MT Rep Power: 533	I would go with the underdrive for maximum gains with your plans.. if you decide to supercharge later you can always swap it back to the lightweight standard one.. I'm sure dumping it in the classifieds would be easy.

04-02-2009, 05:18 PM	#8 (permalink)
RCZ A True Z Fanatic Join Date: Nov 2008 Location: Miami Posts: 6,403 Drives: '09 370Z Rep Power: 1119	95% sure I'm buying.

04-02-2009, 08:04 PM	#9 (permalink)
ZforMe Base Member Join Date: Jan 2009 Location: Memphis TN Posts: 238 Drives: 370Z Sport Auto PG Rep Power: 16	Anyone see anything wrong with doing this as a first mod (since it's the cheapest)?

04-02-2009, 08:24 PM	#10 (permalink)
ssqpolo Track Member Join Date: Jan 2009 Location: Florida Posts: 882 Drives: '12 Black Nismo Rep Power: 267	nothing wrong, but i would do the intakes or the HFCs first (jmo)

04-03-2009, 12:50 AM	#12 (permalink)
2bits Base Member Join Date: Mar 2009 Location: Seattle Posts: 118 Drives: 09 370Z Blk Sp 7AT Rep Power: 16	I hear AC and alternator mentioned, but what about other systems driven off the shaft? Power steering? Or is PS electric on the Z?

04-03-2009, 01:09 AM	#13 (permalink)
Josh@STILLEN The370Z.com Sponsor Join Date: Dec 2008 Location: Costa Mesa, CA Posts: 1,197 Drives: 2004 G35 Coupe 6MT Rep Power: 533	Power steering is crank driven.. but no noticeable effect at RPM.. Some very very sensitive people have reported a slight increase in the effort it takes to turn the wheel when stopped or at less than 5mph speeds.. but that effect went away in less than a week as it becomes normal. Once the revs are above idle, there is no discernible difference..

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