Crank Pulley Replacement

BlackZMamba · 04-21-2016, 11:13 AM

Has anyone replaced their OEM crank pulley with an aftermarket one? If so, which ones did you guys go with and how much of a difference in HP did you achieve?

Trips · 04-21-2016, 11:35 AM

You have 2 options

STILLEN Pulleys!!!

Don't know if NST is even around anymore.

NST (NonStopTuning) 370Z VQ37HR Pulley Kit Review w/ Dyno Charts

I have the NST setup for years and have not had any issues.

SouthArk370Z · 04-21-2016, 11:50 AM

Several threads on this subject already. If site's search isn't working well for you, try any of the big web search engines and add "site:the370z.com" to your search string. Eg, https://duckduckgo.com/?q=crank+pull...%3Athe370z.com

Spooler · 04-21-2016, 12:35 PM

ATI damper and be done with it.

AntiVenom · 04-21-2016, 04:03 PM

Quote:

Originally Posted by Spooler

ATI damper and be done with it.

That's the route I went. Rather have reliability than an extra 1whp.

fantaZ · 04-21-2016, 06:37 PM

Quote:

Originally Posted by AntiVenom

That's the route I went. Rather have reliability than an extra 1whp.

does this increase hp?

Chuck33079 · 04-21-2016, 07:19 PM

Quote:

Originally Posted by fantaZ

does this increase hp?

Nope. It relieves a lot of the stresses on the end of the crank and oil pump and smooths everything out.

barncobob · 04-21-2016, 07:23 PM

I dunno know, my 16 4K miles at runs idle runs so smooth I sometimes think it has stopped, have to look at tach

Chuck33079 · 04-21-2016, 07:28 PM

At idle. It's at high rpm these motors get a little thrashy.

LAVA · 04-21-2016, 08:07 PM

Quote:

Originally Posted by AntiVenom

That's the route I went. Rather have reliability than an extra 1whp.

10 HP and 9 ft/lbs of Torque

Chuck33079 · 04-21-2016, 08:10 PM

Quote:

Originally Posted by LAVA

10 HP and 9 ft/lbs of Torque

Yeah, but NST scammed a whole bunch of members here and isn't a vendor here anymore.

AntiVenom · 04-21-2016, 09:08 PM

so that´s 10hp from a untrustworthy vendor on a car with what mods?

this dyno chart from a forum member with a stillen pulley seems more in line with the gains you´d expect from a crank pulley swap. I don´t even think I´d bother to turn a wrench for 3hp.

edit: for the full review Stillen Underdrive Pulley - Review/Pics/Dyno/Vid

Chuck33079 · 04-21-2016, 09:29 PM

If I was looking to lose rotating mass, I'd go with a light flywheel and the ATI damper.

FLUJOKE · 04-22-2016, 12:05 PM

NST is still around and they're out of Houston. They're pulleys are very light and solid so far with me. If you're going boosted go with ATI like people said but otherwise you should be ok. I went NST over stillen bc they offer and OD Alternator pulley as well. I went w/ NST over ATI bc of costs and not boosted. I feel a huge amount of stress lifted off the engine and it should be everyone's 1st mod.

Sent from my iPhone using Tapatalk

LAVA · 04-22-2016, 01:43 PM

X2 I love mine, great mod for the $$

04-21-2016, 11:13 AM	#1 (permalink)
BlackZMamba Enthusiast Member Join Date: Oct 2012 Location: La Salle, IL Posts: 345 Drives: 2013 Z @ 321 whp Rep Power: 13	Crank Pulley Replacement Has anyone replaced their OEM crank pulley with an aftermarket one? If so, which ones did you guys go with and how much of a difference in HP did you achieve? __________________ Mods: ECUtek \| Stillen \| Fujimura \| BC Racing \| SPC \| Avant Garde \| Fast Intentions \| Z1 Motorsports \| Akebono \| Cooper \| Redline \| Motul \| Mobil 1

04-21-2016, 11:35 AM	#2 (permalink)
Trips Administrator Join Date: May 2009 Location: Disneyland, Ca Posts: 8,730 Drives: 🔰 Rep Power: 10	You have 2 options STILLEN Pulleys!!! Don't know if NST is even around anymore. NST (NonStopTuning) 370Z VQ37HR Pulley Kit Review w/ Dyno Charts I have the NST setup for years and have not had any issues. onzedge and BlackZMamba like this. __________________

04-21-2016, 11:50 AM	#3 (permalink)
SouthArk370Z Premium Member Join Date: Nov 2010 Location: South Arkansas Posts: 8,435 Drives: 2014 Challenger Rep Power: 324198	Several threads on this subject already. If site's search isn't working well for you, try any of the big web search engines and add "site:the370z.com" to your search string. Eg, https://duckduckgo.com/?q=crank+pull...%3Athe370z.com BlackZMamba likes this. __________________ Steering Lock Links - Search The370Z Bookmarklet - FSM @ NICOclub Mankind has progressed past the need for war but we haven't evolved that far. - NachoMahma

04-21-2016, 12:35 PM	#4 (permalink)
Spooler A True Z Fanatic Join Date: Jun 2014 Location: Ga Posts: 13,798 Drives: 2013 Nismo 370z Rep Power: 2684392	ATI damper and be done with it. JARblue, gomer_110, Chuck33079 and 3 others like this.

04-21-2016, 07:28 PM	#9 (permalink)
Chuck33079 A True Z Fanatic Join Date: Nov 2011 Location: Houston Posts: 12,265 Drives: 2011 370ztt Rep Power: 29539	At idle. It's at high rpm these motors get a little thrashy. AntiVenom likes this. __________________ 2011 MB Touring-Sport-6sp-Nav/GTM TT/FI TT TDX/JTran/Kosmic/Eibach/Hotchkis/SPC/CSF/RPS/SoThatsWhereAllMyMoneyWent

04-21-2016, 07:23 PM	#8 (permalink)
barncobob A True Z Fanatic Join Date: Sep 2015 Location: hangtown, CA Posts: 1,164 Drives: 16 370Z auto Rep Power: 590	I dunno know, my 16 4K miles at runs idle runs so smooth I sometimes think it has stopped, have to look at tach

04-21-2016, 09:08 PM	#12 (permalink)
AntiVenom Track Member Join Date: Nov 2014 Location: North Carolina Posts: 695 Drives: 2011 KAD 6MT Rep Power: 12	so that´s 10hp from a untrustworthy vendor on a car with what mods? this dyno chart from a forum member with a stillen pulley seems more in line with the gains you´d expect from a crank pulley swap. I don´t even think I´d bother to turn a wrench for 3hp. edit: for the full review Stillen Underdrive Pulley - Review/Pics/Dyno/Vid BlackZMamba likes this. __________________ The GREY GHOST Chronicle instagram: jdmunilla Last edited by AntiVenom; 04-21-2016 at 09:13 PM.

04-21-2016, 09:29 PM	#13 (permalink)
Chuck33079 A True Z Fanatic Join Date: Nov 2011 Location: Houston Posts: 12,265 Drives: 2011 370ztt Rep Power: 29539	If I was looking to lose rotating mass, I'd go with a light flywheel and the ATI damper. Rusty, xxAGAVExx and AntiVenom like this. __________________ 2011 MB Touring-Sport-6sp-Nav/GTM TT/FI TT TDX/JTran/Kosmic/Eibach/Hotchkis/SPC/CSF/RPS/SoThatsWhereAllMyMoneyWent

04-22-2016, 12:05 PM	#14 (permalink)
FLUJOKE Track Member Join Date: Apr 2012 Location: earth Posts: 770 Drives: car Rep Power: 2067	NST is still around and they're out of Houston. They're pulleys are very light and solid so far with me. If you're going boosted go with ATI like people said but otherwise you should be ok. I went NST over stillen bc they offer and OD Alternator pulley as well. I went w/ NST over ATI bc of costs and not boosted. I feel a huge amount of stress lifted off the engine and it should be everyone's 1st mod. Sent from my iPhone using Tapatalk LAVA likes this.

04-22-2016, 01:43 PM	#15 (permalink)
LAVA Track Member Join Date: Nov 2014 Location: Ohio Posts: 775 Drives: AWD Q50S_3.7 Rep Power: 80	X2 I love mine, great mod for the $$ __________________ BORLA / BERK / R2C / Z1 / Swift / NST / MOTORDYNE / OMP / H&R / EVO-R / AEROJACKET

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