Toyota Yaris Forums - Ultimate Yaris Enthusiast Site
 

 


 
Go Back   Toyota Yaris Forums - Ultimate Yaris Enthusiast Site > Technical Forums > DIY / Maintenance / Service
  The Tire Rack

Reply
 
Thread Tools Display Modes
Old 03-01-2007, 09:18 PM   #1
Galavoxx
 
Galavoxx's Avatar
 
Drives: Yaris Hatch
Join Date: Oct 2006
Location: San Francisco
Posts: 397
I think you explained it better. but I tried...
Galavoxx is offline   Reply With Quote
Old 03-01-2007, 10:00 PM   #2
eTiMaGo
vroom vroom
 
eTiMaGo's Avatar
 
Drives: lil red 5-door
Join Date: Sep 2006
Location: Bangkok, Thailand
Posts: 7,744
Send a message via AIM to eTiMaGo Send a message via MSN to eTiMaGo Send a message via Yahoo to eTiMaGo
Quote:
Originally Posted by Galavoxx View Post
I think you explained it better. but I tried...
A for effort

ah this "education" had to come in useful sometime.. I used to love physics, best in my class... but that was many many moons ago
__________________
The price of freedom of religion, or of speech, or of the press, is that we must put up with a good deal of rubbish.
- Robert Jackson


Bye bye 1NZ...
eTiMaGo is offline   Reply With Quote
Old 06-23-2007, 06:12 AM   #3
jdium
Mr Attitude
 
jdium's Avatar
 
Drives: Blazing Blue 5 Spd
Join Date: Jun 2007
Location: Hillsboro
Posts: 302
Quote:
Originally Posted by eTiMaGo View Post

Of course, the disadvantage of removing rotational mass in a 4-cylinder daily driver is the idle quality. The engine needs the heavy weight of the flywheel to keep it going during the 3 non-power strokes. So, when you reduce this mass, the engine will slow down between rotations, and at a lower engine speed (idling), this can make things very rough, even stall the engine.
The engine fires a piston on every rotation. 4 stroke, 4 piston..............

Why the need for a heavy flywheel? Light means quick acceleration and quick deceleration. Comes down to how the driver manages the car............
jdium is offline   Reply With Quote
Old 03-01-2007, 11:14 PM   #4
ChinoCharles
Banned
 
Drives: LB
Join Date: Jul 2006
Location: OH
Posts: 7,787
I just got word pulleys should ship out mid next week. Let the crying begin!
ChinoCharles is offline   Reply With Quote
Old 03-28-2007, 03:10 PM   #5
Astroman
Modded Moderator
 
Astroman's Avatar
 
Drives: 07 Toyota Yaris, 71 Galaxie
Join Date: Mar 2007
Location: Wenatchee, WA
Posts: 3,670
I have mine installed. Love it! Thank you Chino Charles!
Astroman is offline   Reply With Quote
Old 03-28-2007, 08:41 PM   #6
ChinoCharles
Banned
 
Drives: LB
Join Date: Jul 2006
Location: OH
Posts: 7,787
Astroman, can you feel the difference in rev speed? Engine idle? What is your take on it?
ChinoCharles is offline   Reply With Quote
Old 03-30-2007, 01:26 PM   #7
Astroman
Modded Moderator
 
Astroman's Avatar
 
Drives: 07 Toyota Yaris, 71 Galaxie
Join Date: Mar 2007
Location: Wenatchee, WA
Posts: 3,670
Quote:
Originally Posted by ChinoCharles View Post
Astroman, can you feel the difference in rev speed? Engine idle? What is your take on it?
It revs up quicker, which I notice the most when I give it more than half throttle to full throttle at speeds above 30mph or so. At a standstill in "P" when I rev it up it sounds smoother. As far as idle goes, it seems like the car is quieter now. From about 20ft away I can barely here it running, and thats with the TRD exhaust. All in all the car feels lighter when I give it some gas (or a lot, lol), seems smoother and revs up quicker. I haven't got the numbers yet on MPG (the last time I checked before the install I got 28.9mpg, but I was pushing the car pretty hard in town and on the freeway, almost all of my driving was in town for that tank). I do know I filled up a couple days ago and even with all in town driving my gas gauge hasn't dropped a bar. I should have some good numbers next week.
Astroman is offline   Reply With Quote
Old 03-30-2007, 01:15 PM   #8
YarisGuy
 
Drives: 2006 Yaris
Join Date: Dec 2006
Location: USA
Posts: 203
I love my NST pulley. My idle seems smoother now than it did before and I have better response in every gear at every RPM. I hope they release other pulleys for us soon
YarisGuy is offline   Reply With Quote
Old 03-30-2007, 01:17 PM   #9
Chris07LB
Super Moderator
 
Chris07LB's Avatar
 
Drives: Yaris Liftback
Join Date: Jun 2006
Location: New Jersey
Posts: 3,174
Any GB gonna happen for a complete pulley set once they are ready? If so, ill just hold off until then.
Chris07LB is offline   Reply With Quote
Old 03-30-2007, 01:25 PM   #10
ChinoCharles
Banned
 
Drives: LB
Join Date: Jul 2006
Location: OH
Posts: 7,787
I'd hold off.
ChinoCharles is offline   Reply With Quote
Old 03-30-2007, 02:41 PM   #11
Chris07LB
Super Moderator
 
Chris07LB's Avatar
 
Drives: Yaris Liftback
Join Date: Jun 2006
Location: New Jersey
Posts: 3,174
Quote:
Originally Posted by ChinoCharles View Post
I'd hold off.
Check email for new pictures...
Chris07LB is offline   Reply With Quote
Old 04-10-2007, 02:34 PM   #12
ChinoCharles
Banned
 
Drives: LB
Join Date: Jul 2006
Location: OH
Posts: 7,787
I don't doubt it! It was just EXTREMELY funny. In the year or so I've been here looking at that sombrero, nobody has asked that.

to you my friend! WELCOME TO YARISWORLD!
ChinoCharles is offline   Reply With Quote
Old 04-10-2007, 02:35 PM   #13
Frank
 
Drives: 2007 yaris liftback
Join Date: Mar 2007
Location: weston
Posts: 8
Send a message via MSN to Frank
THANKS BRO
Frank is offline   Reply With Quote
Old 04-10-2007, 02:42 PM   #14
Frank
 
Drives: 2007 yaris liftback
Join Date: Mar 2007
Location: weston
Posts: 8
Send a message via MSN to Frank
chino where are you from?
Frank is offline   Reply With Quote
Old 04-10-2007, 08:30 PM   #15
ChinoCharles
Banned
 
Drives: LB
Join Date: Jul 2006
Location: OH
Posts: 7,787
Far, far away in a land unspoken.
ChinoCharles is offline   Reply With Quote
Old 04-11-2007, 02:43 AM   #16
Terrorize
Toyota Newb!!
 
Drives: Yaris S Sedan w/ Aero Package!
Join Date: Jun 2006
Location: Toronto
Posts: 228
Hmm...anyone know what the effect this pulley change will have on an auto trans? Same as manual? Any point in changing it at all?? Wanted to change my flywheel...to a lighter one but turns out i don't GOT one! heh heh...
Terrorize is offline   Reply With Quote
Old 04-11-2007, 11:18 AM   #17
Astroman
Modded Moderator
 
Astroman's Avatar
 
Drives: 07 Toyota Yaris, 71 Galaxie
Join Date: Mar 2007
Location: Wenatchee, WA
Posts: 3,670
Quote:
Originally Posted by Terrorize View Post
Hmm...anyone know what the effect this pulley change will have on an auto trans? Same as manual? Any point in changing it at all?? Wanted to change my flywheel...to a lighter one but turns out i don't GOT one! heh heh...
I have the auto, and I can say, the NST pulley made a difference. I am getting better gas mileage, more mid-range torque, a quiet engine, and better acceleration. Not so much "off the line" but very noticeable if you already have some forward momentum and give the accelerator a push. It also weighs about 2lbs less than the stock pulley. I love mine and did notice the difference.
Astroman is offline   Reply With Quote
Old 04-11-2007, 12:51 PM   #18
Terrorize
Toyota Newb!!
 
Drives: Yaris S Sedan w/ Aero Package!
Join Date: Jun 2006
Location: Toronto
Posts: 228
Cool....thanks dude...in that case i will consider getting it! Heh heh...
Terrorize is offline   Reply With Quote
Reply


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 05:18 PM.




YarisWorld
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.