OzVMX Forum

Marque Remarks => Yamaha => Topic started by: head on October 07, 2012, 08:34:16 pm

Title: IT250 vs YZ250 transmission
Post by: head on October 07, 2012, 08:34:16 pm

Does any body know the differences in ratios between a IT250d and a YZ250d 1977 models. Would a IT transmission with a YZ cylinder be OK for motocross?

Title: Re: IT250 vs YZ250 transmission
Post by: Iain Cameron on October 07, 2012, 10:01:51 pm

YZ 1st 2.07 IT 1st 2.29   2nd 1.56 to 1.71    3rd 1.24 to 1.30   4th 1.00 to1.00    5th  0.86 to 0.84   : Iain

Title: Re: IT250 vs YZ250 transmission
Post by: mboddy on October 08, 2012, 07:21:31 am

The YZ250D and IT250D have the same cylinder.
The IT piston has a longer skirt for more down low.
http://www.yamahait.com.au/forum/index.php/topic,50.0.html (http://www.yamahait.com.au/forum/index.php/topic,50.0.html)