NST crank pulley - Toyota Yaris Forums

ttr125fan09 · 07-27-2011, 02:06 PM

i just ordered one from micro image today and i know there is quicker throttle response, but is the any hp gains, just wondering...

MUSKOKA800 · 07-27-2011, 04:25 PM

It's an efficiency upgrade (lighter weight, less load) not a power adder.

It is much easier to stall a manual Yaris (finicky clutch combined with low torque at engagement rpm) with an NST pulley due to less rotation enertia. For the same reason the R's spin up faster once you're underway, into the powerband and going through the gears.

why? · 07-28-2011, 01:40 AM

as weird as this sounds, i haven't stalled my Yaris since putting on the pulley kit, and I always stall the thing with that horrid clutch.

And as was said, it won't add any power, it will remove weight, which frees up power to go to the wheels.

ttr125fan09 · 07-28-2011, 10:20 AM

sounds like a good piece, from what i read its not that hart to install.

cali yaris · 07-28-2011, 12:49 PM

Quote:

as weird as this sounds, i haven't stalled my Yaris since putting on the pulley kit

Me neither. The motor will also DEcelerate more quickly with a lighter pulley.

MUSKOKA800 · 07-29-2011, 03:57 PM

Quote:

Originally Posted by ttr125fan09

sounds like a good piece, from what i read its not that hart to install.

It's a quick no-brainer.

thebarber · 07-29-2011, 04:26 PM

if you don't plan for a supercharger, get the underdrive crank pulley....it has better benefits than the stock-sized lightweight pulley (i know from experience)

why? · 07-30-2011, 10:34 AM

since i'be been driving to fall river every day( about an hour and a half) I can really say the pulley set helps me get better gas mileage. The car seems to just float at certain revs when I take my foot off the gas. We'll see how my next tank of gas goes, but my last one i hit 38 mpg with ac on and averaging 70 or so on the highway.

ttr125fan09 · 07-30-2011, 10:49 AM

sounds like a real good peice mpg and some performance.... cant wait to install

cali yaris · 07-30-2011, 12:13 PM

@ the barber: we don't know when NST is going to make more of those.

ttr125fan09 · 08-01-2011, 01:17 PM

got it today, super fast shipping, cant wait to install

thebarber · 08-01-2011, 04:18 PM

Quote:

Originally Posted by cali yaris

@ the barber: we don't know when NST is going to make more of those.

more underdrive pullies? i didnt realize they were out of stock...

goliath1812 · 08-01-2011, 07:13 PM

yup, Garm has them backordered and NST sent me an e-mail saying they have no ETA of making any new ones. :(

Crackerballer · 08-01-2011, 10:29 PM

Quote:

Originally Posted by goliath1812

yup, Garm has them backordered and NST sent me an e-mail saying they have no ETA of making any new ones. :(

FUUUUUUUUUUUUUUUUU

Edit* They have them listed as in stock on their website...

Jason@SportsCar · 08-02-2011, 12:44 PM

It would be nice if they were re-engineering it with a little more material around the crank bolt.

cali yaris · 08-02-2011, 03:07 PM

^ working on it.

Jason@SportsCar · 08-02-2011, 03:26 PM

Quote:

Originally Posted by cali yaris

^ working on it.

Wish I would have known that before I spent way to much on this one.

cali yaris · 08-02-2011, 03:44 PM

That's pretty. Yeah, but you have it now, and I'm only in R&D mode, so it's all good.

07-27-2011, 02:06 PM	#1
ttr125fan09 View User's Garage Drives: yaris Join Date: May 2011 Location: corpus christi, texas Posts: 133	NST crank pulley i just ordered one from micro image today and i know there is quicker throttle response, but is the any hp gains, just wondering...

07-27-2011, 04:25 PM	#2
MUSKOKA800 Drives: '08 Yaris Sedan, Aero Package Join Date: Oct 2008 Location: Burlington, Ontario, Canada Posts: 1,720	It's an efficiency upgrade (lighter weight, less load) not a power adder. It is much easier to stall a manual Yaris (finicky clutch combined with low torque at engagement rpm) with an NST pulley due to less rotation enertia. For the same reason the R's spin up faster once you're underway, into the powerband and going through the gears. __________________ TRD Upgrades: 18" Wheels wrapped in 215/35/18 PZero's, Sportivo Shocks/Struts, Lowering Springs, Swaybar, Axle-Back Exhaust, Oil Cap, Rad Cap, Signage. Aftermarket Goodies: Piggies SS, K&N Drop-In, Blitz S/C, DC Header, NST Pulley) Toyota Options/Accessories: Sport Pedal Covers, Sport Shift Knob, Ipod Interface, Summer Mats, Winter Mats, Cruise Control, Auto-Dim Mirror, Echo steelies with winter boots.

07-28-2011, 01:40 AM	#3
why? Only Happy When it Rains View User's Garage Drives: Yaris LB Join Date: Jan 2006 Location: harnett county NC Posts: 4,097	as weird as this sounds, i haven't stalled my Yaris since putting on the pulley kit, and I always stall the thing with that horrid clutch. And as was said, it won't add any power, it will remove weight, which frees up power to go to the wheels. __________________ Colin Chapman disciple

07-29-2011, 04:26 PM	#7
thebarber daily driver View User's Garage Drives: the #wrecho Join Date: Jun 2006 Location: Grand Rapids, MI Posts: 5,877	if you don't plan for a supercharger, get the underdrive crank pulley....it has better benefits than the stock-sized lightweight pulley (i know from experience) __________________

07-30-2011, 10:34 AM	#8
why? Only Happy When it Rains View User's Garage Drives: Yaris LB Join Date: Jan 2006 Location: harnett county NC Posts: 4,097	since i'be been driving to fall river every day( about an hour and a half) I can really say the pulley set helps me get better gas mileage. The car seems to just float at certain revs when I take my foot off the gas. We'll see how my next tank of gas goes, but my last one i hit 38 mpg with ac on and averaging 70 or so on the highway. __________________ Colin Chapman disciple

07-28-2011, 10:20 AM	#4
ttr125fan09 View User's Garage Drives: yaris Join Date: May 2011 Location: corpus christi, texas Posts: 133	sounds like a good piece, from what i read its not that hart to install.

07-30-2011, 10:49 AM	#9
ttr125fan09 View User's Garage Drives: yaris Join Date: May 2011 Location: corpus christi, texas Posts: 133	sounds like a real good peice mpg and some performance.... cant wait to install

07-30-2011, 12:13 PM	#10
cali yaris ULTIMATE View User's Garage Drives: 07 Yaris Turbo Join Date: May 2007 Location: Canoga Park, CA Posts: 14,859	@ the barber: we don't know when NST is going to make more of those. __________________ Micro Image forums, online store and shop are now closed. It was a great eight year run, but it was time to focus on other things. I'm still selling parts on eBay under micro*image seller ID and customers can still make requests for anything specific.

08-01-2011, 01:17 PM	#11
ttr125fan09 View User's Garage Drives: yaris Join Date: May 2011 Location: corpus christi, texas Posts: 133	got it today, super fast shipping, cant wait to install

08-01-2011, 07:13 PM	#13
goliath1812 View User's Garage Drives: 2010 Prius, 2007 Yaris Sedan Join Date: Oct 2009 Location: Ocala Florida Posts: 368	yup, Garm has them backordered and NST sent me an e-mail saying they have no ETA of making any new ones. :( __________________

08-02-2011, 12:44 PM	#15
Jason@SportsCar Drives: 2015 H Production Yaris Join Date: Oct 2009 Location: Debary, FL Posts: 1,953	It would be nice if they were re-engineering it with a little more material around the crank bolt. __________________ 2005-2008 SCCA Solo BS National Champion 2017-2018 SCCA H Prod National Champion

08-02-2011, 03:07 PM	#16
cali yaris ULTIMATE View User's Garage Drives: 07 Yaris Turbo Join Date: May 2007 Location: Canoga Park, CA Posts: 14,859	^ working on it. __________________ Micro Image forums, online store and shop are now closed. It was a great eight year run, but it was time to focus on other things. I'm still selling parts on eBay under micro*image seller ID and customers can still make requests for anything specific.

08-02-2011, 03:44 PM	#18
cali yaris ULTIMATE View User's Garage Drives: 07 Yaris Turbo Join Date: May 2007 Location: Canoga Park, CA Posts: 14,859	That's pretty. Yeah, but you have it now, and I'm only in R&D mode, so it's all good. __________________ Micro Image forums, online store and shop are now closed. It was a great eight year run, but it was time to focus on other things. I'm still selling parts on eBay under micro*image seller ID and customers can still make requests for anything specific.

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