It might fit but it won't work because the jetting will be wrong and with that big of a size difference the throtle will probably have too large of an opening in it.
I have a 1988 Yamaha YZ250 and my manual states .028 is the setting that you should use.
1988-1991 yz250 motors are completely interchangeable. Some parts like the cylinder head use the same casting from 1988-1996. Note: although interchangeable the cylinder ports and cylinder head combustion chamber shape differ form year to year. The optimum setup for a 1990 yz250 is a 1991 cylinder with a 1992 head.
I can't think of any that wouldn't fit. The 1986 to 1993 bikes are virtually identical except for colors.
It is 8.54 ~ 10.12 :1
24:1 or 32:1 the richer the longer the life i like 24:1 for my 1993 yz250
They have Disc brakes both front and back stock they came with Nissin braking system, they use DOT4 brake fluid, if you be more specific with your question I could be able to answer better my email is protechav@yahoo.com
The dry weight of a 1988 model, 70hp Yamaha is 233 lbs.
Bikebandit.com
1985 for Perestroika and between 1986-1991 for the
The cast of Ramayan - 1986 includes: Vijay Arora as Meghnath Deepika as Sita Rajni Bala as Sumitra (1986-1988) Bal Dhuri as Dasharath (1986-1988) Jayshree Gadkar as Kaushalya (1986-1988) Arun Govil as Ram Sanjay Jog as Bharat (1986-1988) Padma Khanna as Kaikeyi (1986-1988) Sulakshana Khatri as Mandavi (1986-1988) Sunil Lahri as Laxman Lalita Pawar as Manthara (1986-1988) Mulraj Rajda as Janak Samir Rajda as Shatrughna (1987-1988) Dara Singh as Hanuman Arvind Trivedi as Ravan
4 stroke. A Yamaha Blaster is a two stroke and so is a Yamaha Banshee but not a warrior.
1988