Crankshaft pulley - Page 2 - Toyota Yaris Forums

eco · 12-03-2006, 01:55 PM

http://www.kamispeed.com/product_inf...81dd38950ffcf7
I also ordered the C-One thermostat cap,the pully was $270,and cap was $82.00,shipping was $12.00,ya I know they were expensive,but I couldnt wait,flywheel is next.
lol Chris,ya i decided to go with the garage sooner then later,today hopfully.

eco · 12-03-2006, 02:01 PM

Not only that,but I cant put any more info in,it has a cap on the # of letters I can add,so its maxed out already,that is the real reason I havnt added it.

punch · 12-03-2006, 02:58 PM

You peeps with big stereo's are asking for trouble, the stock alternator is week, and your going to underdrive it?

also we have electric steering no belt! so i doubt we would gain much, but keep us informed, you swayed me on the headers, maybe the pully is next?

eco · 12-03-2006, 03:36 PM

Well,this is the other reason why I havnt added any ICE(In Car Entertainment) to the car yet,I figured I'd get all the performance upgrades installed first,then see if I needed an alternator swap.But Ill keep you informed,I think that it will work out perfectly,C-One test all there products religously,and I trust them.

KSIbucky · 12-03-2006, 04:21 PM

Quote:

Originally Posted by RossP

Can't see why not

ya why wouldnt it

*Chris07LB* · 12-03-2006, 05:18 PM

Quote:

Originally Posted by punch

stock alternator is week, and your going to underdrive it?

Re-read the title.. we are talking about the crankshaft pulley here, not underdriving all the pulleys.

PuntangRacing · 12-06-2006, 07:05 PM

Hello,
This pulley does not underdrive, its the same diameter as OEM.
Just much lighter. I currently sell these for the Honda fit.
But will have one for the Yaris very soon for test fitting USDM yaris & scion.

*Chris07LB* · 12-06-2006, 07:09 PM

Quote:

Originally Posted by PuntangRacing

Hello,
This pulley does not underdrive, its the same diameter as OEM.
Just much lighter. I currently sell these for the Honda fit.
But will have one for the Yaris very soon for test fitting USDM yaris & scion.

There shouldnt be any difference in fittment between xa/xb and the Yaris 1.5L correct? Same cranks being used..

acrbill · 12-06-2006, 08:30 PM

If its not an underdrive pulley I really can't imagine that there would be any sort of gain. Also having a non damped pulley is far from ideal.

Galavoxx · 12-06-2006, 11:22 PM

Quote:

Originally Posted by acrbill

If its not an underdrive pulley I really can't imagine that there would be any sort of gain. Also having a non damped pulley is far from ideal.

Not sure of the formula but this also holds true for lightened flywheels and clutches: rotating mass weighs a hell-of-a-lot more than stationary mass. Somebody else around here might have some actual numbers but decreasing the pulley weight by one pound will allow the motor to spin up faster due to the fact that is has to move a lot less weight. This is especially true at the lower rpms where there is less torque/horsepower available. I don't know how noticeable the performance gain would be with just a lightened pulley since I've never installed one, but I have done an old Porsche flywheel and clutch and the accelleration gains were awesome. With some trade-offs, of course.

acrbill · 12-06-2006, 11:39 PM

A lot of times when your dealing with a lightened flywheel your losing at least 10lbs. I put a UDP on my old Neon and there was minimal gains, and I would attribute any gain to the underdrive aspect.

The Neon also had 2 grooves so it stood to lose a lot more weight than a single groove setup.

I just think $250 for a pulley is insane.

Galavoxx · 12-06-2006, 11:58 PM

Quote:

Originally Posted by acrbill

I just think $250 for a pulley is insane.

Agreed. Plus, I was doing an oil change today and it looks like you would need to have baby hands to change that thing out without dropping the motor.

*Chris07LB* · 12-07-2006, 09:14 AM

Install is easy.

RossP · 12-07-2006, 10:06 AM

Quote:

Originally Posted by Galavoxx

Agreed. Plus, I was doing an oil change today and it looks like you would need to have baby hands to change that thing out without dropping the motor.

You could fit a pulley in the old yaris through the wheel arch, probs best to do it that way again if theres room

*Chris07LB* · 12-07-2006, 10:11 AM

Quote:

Originally Posted by RossP

You could fit a pulley in the old yaris through the wheel arch, probs best to do it that way again if theres room

Same way its done on the xa/xb Scions... Again, if only changing the crank pulley, its cake.

Galavoxx · 12-07-2006, 11:39 AM

good to know. Maybe I'll take my stocker off and just get it lightened.

*Chris07LB* · 12-07-2006, 12:55 PM

Doesnt quite work that way... by the time a machine shop sets up to lighten yours, you could just buy a brand new one.

Besides, its not like there is much to remove on a stock pulley, without effecting its strength.

Aftermarket pulleys are not lightned stock pulleys FYI.

Galavoxx · 12-07-2006, 06:56 PM

Quote:

Originally Posted by Chris07LB

Doesnt quite work that way... by the time a machine shop sets up to lighten yours, you could just buy a brand new one.

Besides, its not like there is much to remove on a stock pulley, without effecting its strength.

Aftermarket pulleys are not lightned stock pulleys FYI.

I'm not that stupid.

A lightened pulley wouldn't be as light as an aftermarket aluminum piece but depending on who you know, it would get done fast and definitely be just as strong. Actually, the Yaris pulley is so damn small... doesn't look like it can be lightened. Anyway, have you seen some of the Aluminum stuff that is being sold. It looks treacherously fragile. There is such a thing as too light, although this particular pulley doesn't have a huge amount of stress placed upon it. The C-one pulley looks strong enough. This one for half the price might be a better option:

http://www.vividracing.com/catalog/p...oducts_id/6581

12-06-2006, 08:30 PM	#27
acrbill Drives: Polar White Hatch Join Date: Nov 2006 Location: chicago Posts: 407	If its not an underdrive pulley I really can't imagine that there would be any sort of gain. Also having a non damped pulley is far from ideal. __________________ ChinoCharles Intake supporter.

12-06-2006, 11:39 PM	#29
acrbill Drives: Polar White Hatch Join Date: Nov 2006 Location: chicago Posts: 407	A lot of times when your dealing with a lightened flywheel your losing at least 10lbs. I put a UDP on my old Neon and there was minimal gains, and I would attribute any gain to the underdrive aspect. The Neon also had 2 grooves so it stood to lose a lot more weight than a single groove setup. I just think $250 for a pulley is insane. __________________ ChinoCharles Intake supporter.

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12-03-2006, 01:55 PM	#19
eco Drives: 2007 Black Yaris sedan Join Date: Sep 2006 Location: Atlanta Posts: 884	http://www.kamispeed.com/product_inf...81dd38950ffcf7 I also ordered the C-One thermostat cap,the pully was $270,and cap was $82.00,shipping was $12.00,ya I know they were expensive,but I couldnt wait,flywheel is next. lol Chris,ya i decided to go with the garage sooner then later,today hopfully.

12-03-2006, 02:01 PM	#20
eco Drives: 2007 Black Yaris sedan Join Date: Sep 2006 Location: Atlanta Posts: 884	Not only that,but I cant put any more info in,it has a cap on the # of letters I can add,so its maxed out already,that is the real reason I havnt added it.

12-03-2006, 02:58 PM	#21
punch Drives: 2007 Yaris Sedan "D" package Join Date: May 2006 Location: Barrie, ontario Posts: 852	You peeps with big stereo's are asking for trouble, the stock alternator is week, and your going to underdrive it? also we have electric steering no belt! so i doubt we would gain much, but keep us informed, you swayed me on the headers, maybe the pully is next?

12-03-2006, 03:36 PM	#22
eco Drives: 2007 Black Yaris sedan Join Date: Sep 2006 Location: Atlanta Posts: 884	Well,this is the other reason why I havnt added any ICE(In Car Entertainment) to the car yet,I figured I'd get all the performance upgrades installed first,then see if I needed an alternator swap.But Ill keep you informed,I think that it will work out perfectly,C-One test all there products religously,and I trust them.

12-06-2006, 07:05 PM	#25
PuntangRacing Drives: Yaris Join Date: Nov 2006 Location: Las Vegas Posts: 3	Hello, This pulley does not underdrive, its the same diameter as OEM. Just much lighter. I currently sell these for the Honda fit. But will have one for the Yaris very soon for test fitting USDM yaris & scion.

12-07-2006, 09:14 AM	#31
Chris07LB Super Moderator View User's Garage Drives: Yaris Liftback Join Date: Jun 2006 Location: New Jersey Posts: 3,174	Install is easy.

12-07-2006, 11:39 AM	#34
Galavoxx View User's Garage Drives: Yaris Hatch Join Date: Oct 2006 Location: San Francisco Posts: 397	good to know. Maybe I'll take my stocker off and just get it lightened.

12-07-2006, 12:55 PM	#35
Chris07LB Super Moderator View User's Garage Drives: Yaris Liftback Join Date: Jun 2006 Location: New Jersey Posts: 3,174	Doesnt quite work that way... by the time a machine shop sets up to lighten yours, you could just buy a brand new one. Besides, its not like there is much to remove on a stock pulley, without effecting its strength. Aftermarket pulleys are not lightned stock pulleys FYI.