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Author Topic: IT250 vs YZ250 transmission  (Read 1692 times)

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Offline head

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IT250 vs YZ250 transmission
« 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?
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Offline Iain Cameron

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Re: IT250 vs YZ250 transmission
« Reply #1 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
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Yamaha tragic ; dt1, rt1, dt2, rt2, dt2mx , rt2mx , mx250, mx360,sc500, 74dt125, yzx125, yzc250, yzc400, yzd250, yzd400, yzh250, yzh80 , dt100 , xr75 ko xr80 03 , it175 82 . Not a member of any club

Offline mboddy

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Re: IT250 vs YZ250 transmission
« Reply #2 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
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Vinduro Penrite Team
1980 Yamaha IT125G, 1979 Yamaha IT175F, 1984 Yamaha IT200L, 1977 Yamaha IT250D and IT400D
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