1985 250r cylinder to a 88 250r on a 1985
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1985 250r cylinder to a 88 250r on a 1985
its to bad some people can't learn anything,, just throw out some stupid comments and leave,,, well its to bad,, i just hate it when people throw out wrong info because they don't really know the right answer,,, it would be worse when you bolted the topend on spent the cash for a cylinder gaskets and time to build it and realized the piston is 5mm short of the top of the cylinder,,,,, DOH! WOW NOW THAT I READ YOUR POST AGAIN ,,, YOU CAN'T DO IT,,, you will need a 85-86 piston,,, the short rod piston needs a spacer plate on a long rod motor,,,,, the other way around you need a earlier piston,,,, without a spacer,,, SORRY i was to busy trying to teach someone else the facts,,,, you can use a short rod piston in a long rod motor ,,just not a long rod piston in a short rod motor,,,,
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1985 250r cylinder to a 88 250r on a 1985
I feel i need to put my 2 cents in the ring
i have that exact set up. make sure you use a 85 piston or it will bottom out on the crank i promise that. another thing you should know is that the 88 jug has its ports in a different position in the stroke. it will run completely different. im not saying its a bad thing but your gonna have to change your pants after you ride it for the first time. the power curve will be very peaky and the motor will rev way higher than it used to. i wish you luck have fun spanking the new fourstrokes!
i have that exact set up. make sure you use a 85 piston or it will bottom out on the crank i promise that. another thing you should know is that the 88 jug has its ports in a different position in the stroke. it will run completely different. im not saying its a bad thing but your gonna have to change your pants after you ride it for the first time. the power curve will be very peaky and the motor will rev way higher than it used to. i wish you luck have fun spanking the new fourstrokes!
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