I recently bought a 94 yamaha blaster. its set up for racing, its bored out 40 over, and has the oil injector taken off. my question is what ratio gas : oil should i use with the bore?

Also what rating oil should i use in the gear case (Ex. 10w-30)

if you have the same set up please let me know what works best for you. thanks a lot

 

when i had mine i did 32:1 ratio. for oil, 20w-50 in summer and 10w30 or 10w40 in winter.

 

thanks, also how many gears did your have?

 

I am almost positive that all blaster's have 6 speed tranny's..you oil mix depend's on what kind of pre-mix you will be using..If you use the cheap-0 stuff go at 32/1 but if u run the good stuff like Klotz, Redline and amsoil synthetic's 40/1 is a good mix.

letha(--)

 

i use a 32:1 in my banshee and they are a 1 down 5 up tranny

 

andi use amsoil and or klotz

 

alright thanks for the help guys

 

how did you bore out a blaster to 240cc?