Or view bikes by:
 - new additions
 - brand
 - year
 - category
 - 50cc or 125cc
 - top charts
New 2014 models New
All 2013 models
MC of the year
News and reviews
Discussions
Words and terms
Unit converters
Riding safety
Home

Free classifieds

Submit motorcycles
Advertise products
Contact Bikez
About Bikez
Privacy Policy
Biker personals




it 490 crankshaft 83 Yamaha IT 490 discussion forum:
it 490 crankshaft

it 490 crankshaft 
michael giglio said 2012-10-27 08:49:49 
 
I have a healthy collection of the GT of dirtbikes the it 490 that im restoring slowly. In the past none of my 490,s ever lost a run in a stait line agains anything including it 465, wr 500,cr 500,tt 600 or what ever. I have noticed the it 490 is the only big bore yamy with the solid cupped crank while the it,yz 465,yz 490,wr 500 all had the traditional strait crank with drilled holes to counter balance. I wonder does the it 490 have more crank presure thus force inducting a better fuel mixture,resulting in more fuel and more octain. 
 
Answer this message                           Show discussion overview

Comments, questions and answersEnter a comment or answer to this message

We invite you to introduce yourself by a few sentences if you are new to this discussion group. Enter your e-mail to join the forum and get notifcations of new messages. Or post your question, answer or comment as a guest. We have just improved this discussion forum and expect the number of users to increase.
 
Title
 
Signature
Optional e-mail
Enter your e-mail to join the forum and get notification of answers and new messages. You can unsubscribe by a single click. Bikez does not show, sell or misuse e-mail addresses.
Message text


More 1983 Yamaha IT 490 information

Our discussion groups are intended for short messages. We also welcome more extensive motorcycle reviews.

Bikez also recommends that you check out the technical data and the riders' rating for the 83 Yamaha IT 490. You can also rate it yourself. Use our efficient motorcycle classifieds to sell or buy this bike. Your motorbike gets a high quality presentation. Ads are free.
    Aprilia     Benelli     BMW     Ducati     Harley-Davidson     Honda     Kawasaki     KTM     Moto Guzzi     Suzuki     Triumph     Ural     Yamaha   

Copyright © 1999-2013 by Bikez.com
Motorcycle catalogue and Motorcycle classifieds