Crank pulley's for Yaris? - Toyota Yaris Forums

ToTo · 03-03-2007, 08:26 AM

I read this on another forum about crank pulley's, could it be true for our Yaris?

"be aware that fiting an undampend pulley in place of a dampend one can cause nasty harmoinc vibrations that can break the crank.now it may well be fine but unless i was having the whole bottom end dynamic balanced i wouldnt risk it. toyota put a dampened pulley on there for a reason."

PetersRedYaris · 03-03-2007, 08:51 AM

People debate this all the time. Some say don't install one while others say it won't hurt anything. If you search you'll find info on this.

ToTo · 03-03-2007, 09:55 AM

Quote:

Originally Posted by PetersRedYaris

People debate this all the time. Some say don't install one while others say it won't hurt anything. If you search you'll find info on this.

I've searched and found many mixed views and opinions on this... I just dont know the real deal? I ordered one, hasn't arrived yet, most likely next week, just wanted to know some more direct info on this.

What can it actually hurt? Can it break as mentioned? I know a lot of people have this installed on their cars, Yaris as well. I've just never heard of anything going wrong by installing this mod.

Opinions and feedback?

ChinoCharles · 03-03-2007, 10:40 AM

For every person that says you'll need to balance the bottom end there is someone else with 80,000 miles on their aftermarket crank pulley.

ToTo · 03-03-2007, 11:51 AM

Quote:

Originally Posted by ChinoCharles

For every person that says you'll need to balance the bottom end there is someone else with 80,000 miles on their aftermarket crank pulley.

Thanks so much for the info!

Are you satisfied with your pulley? What differences have you noticed compared to the stock pulley?

By the way, nice DIY write up on the pulley!

ChinoCharles · 03-03-2007, 12:00 PM

Quote:

Originally Posted by ToTo

Thanks so much for the info!

Are you satisfied with your pulley? What differences have you noticed compared to the stock pulley?

By the way, nice DIY write up on the pulley!

Thanks.

I am definitely satisfied. I can't vouch for how much power it makes in actuality, although I am trying to get it on a dyno so I can find out. All I can say is that throttle response was definitely improved, and I know some modest horsepower gain is there, although I don't want to speculate numbers based on the butt dyno. I'm excited to follow it with the rest of the lightened pulleys coming this summer.

For a little over a hundred bucks I don't see why everyone wouldn't have some type of lightened crank pulley on their car. Its the perfect first mod.

Don't forget though... NST FTW.

PetersRedYaris · 03-03-2007, 01:26 PM

Quote:

Originally Posted by ChinoCharles

For every person that says you'll need to balance the bottom end there is someone else with 80,000 miles on their aftermarket crank pulley.

I got my Yaris because I want it to last 200,000 miles, not 80,000. If that were the case I would have bought somthing other than a Toyota. I'm not saying a non-balanced crank pully will ruin your engine, just that 80,000 miles isn't a fair test for a Toyota. 200,000+ on a pully and you have confirmation it doe's no harm.

nester · 03-03-2007, 01:39 PM

I don't think there's a tC with 200k on it yet.. but we're working on it.

I personally don't keep cars long enough to know vouch for long term reliability, stock, modified or otherwise.. One to two years at best.. :)

YarisGuy · 03-03-2007, 04:06 PM

This topic was brought up in the original NST group buy thread, and Mike from NST talked about it a little bit.

http://www.yarisworld.com/forums/showthread.php?t=3239

I know so many people who use NST crank pulleys for thousands of miles and none of them have had any problems. I wouldn't ever touch crappy ebay junk, but I think a well designed high quality product should be just fine.

jamal1984 · 03-03-2007, 05:27 PM

i think it works just fine, if you worry about high mileages then just replace it every 100000 miles. :)

ToTo · 03-03-2007, 05:31 PM

Quote:

Originally Posted by ChinoCharles

Thanks.

I am definitely satisfied. I can't vouch for how much power it makes in actuality, although I am trying to get it on a dyno so I can find out. All I can say is that throttle response was definitely improved, and I know some modest horsepower gain is there, although I don't want to speculate numbers based on the butt dyno. I'm excited to follow it with the rest of the lightened pulleys coming this summer.

For a little over a hundred bucks I don't see why everyone wouldn't have some type of lightened crank pulley on their car. Its the perfect first mod.

Don't forget though... NST FTW.

Thanks a lot!

Im also thinking about this mod for the car... So basically, there's nothing to worry about regarding lightweight crank pulley's as a mod on the Yaris, right?

*Chris07LB* · 03-03-2007, 06:55 PM

Crap.. so much more for me to buy...

RossP · 03-04-2007, 04:42 AM

Quote:

Originally Posted by ToTo

? I ordered one, hasn't arrived yet, most likely next week, just wanted to know some more direct info on this.

You get a Perrin one dude? How much you pay?

03-03-2007, 08:26 AM	#1
ToTo Drives: Toyota Yaris T SPORT Join Date: Feb 2006 Location: Budapest, Hungary Posts: 110	Crank pulley's for Yaris? I read this on another forum about crank pulley's, could it be true for our Yaris? "be aware that fiting an undampend pulley in place of a dampend one can cause nasty harmoinc vibrations that can break the crank.now it may well be fine but unless i was having the whole bottom end dynamic balanced i wouldnt risk it. toyota put a dampened pulley on there for a reason." __________________

03-03-2007, 01:39 PM	#8
nester I made a post! Drives: 2006 Scion tC-t Join Date: Feb 2007 Location: ZPI Corporate HQ Posts: 21	I don't think there's a tC with 200k on it yet.. but we're working on it. I personally don't keep cars long enough to know vouch for long term reliability, stock, modified or otherwise.. One to two years at best.. :) __________________ ZPIracing - World Leader In YARIS Performance, and we make some scion stuff too..... :o If you're not first, you're last!

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
NEW GROUP BUY: Yaris NST Crank Pulley (NonStopTuning)	NonStopTuning	NonStopTuning	224	05-17-2007 07:40 AM
ZPI or NST crank pully?	PetersRedYaris	Performance Modifications	35	03-04-2007 03:34 PM
Perrin Crank Pulley	IntensePower	Performance Modifications	6	02-22-2007 12:08 PM
Crankshaft pulley	PuntangRacing	Performance Modifications	49	12-23-2006 01:17 AM
window crank	KSIbucky	DIY / Maintenance / Service	3	10-19-2006 12:01 AM

03-03-2007, 08:51 AM	#2
PetersRedYaris View User's Garage Drives: 2005 Scion xB Join Date: Nov 2006 Location: The Black Hills of South Dakota Posts: 1,059	People debate this all the time. Some say don't install one while others say it won't hurt anything. If you search you'll find info on this.

03-03-2007, 10:40 AM	#4
ChinoCharles Banned Drives: LB Join Date: Jul 2006 Location: OH Posts: 7,787	For every person that says you'll need to balance the bottom end there is someone else with 80,000 miles on their aftermarket crank pulley.

03-03-2007, 04:06 PM	#9
YarisGuy Drives: 2006 Yaris Join Date: Dec 2006 Location: USA Posts: 203	This topic was brought up in the original NST group buy thread, and Mike from NST talked about it a little bit. http://www.yarisworld.com/forums/showthread.php?t=3239 I know so many people who use NST crank pulleys for thousands of miles and none of them have had any problems. I wouldn't ever touch crappy ebay junk, but I think a well designed high quality product should be just fine.

03-03-2007, 05:27 PM	#10
jamal1984 The Beautification of Car View User's Garage Drives: Toyota Yaris S Join Date: Aug 2006 Location: Georgia, USA Posts: 967	i think it works just fine, if you worry about high mileages then just replace it every 100000 miles. :)

03-03-2007, 06:55 PM	#12
Chris07LB Super Moderator View User's Garage Drives: Yaris Liftback Join Date: Jun 2006 Location: New Jersey Posts: 3,174	Crap.. so much more for me to buy...