I picked up an old cr250 from a friend, and was hoping to do some hare scrambles with it next year. I've ridden the bike ocassionaly over the past 2 years and it runs pretty good. It needs to be stiffened up in the suspension dept. which I'm in the process of doing. After that I want to do a top-end rebuild over the winter. I figured while I was in there I could do some other things to make it more suitable for trail/hare scrambles. My friend recieved the bike in trade for doing some head work and was told it had the ports matched, and a 1mm over wiseco (confirmed). It also has a pro circuit pipe, and one of those goofy roost boosts. I'm not really sure on the porting until I remove the cylinder and have a look, and even then I'm not much of a 2stroke guy so I wont really know what I'm looking at. I know it has a huge rear sprocket too. Tops out at around 60? How much top-end/speed will I need for hare scrambles?
My main questions are, do the flywheel weights really work? And how much top end do you lose when you have one. How much does a couple golf ball size dents in the pipe effect the power?
I'm planning on replacing the pipe but am curious to see If i can feel the difference. Also, any suggestions on brands of pipes, reeds, pistons,etc. (hopefully from someone who has ran this bike before)
My main questions are, do the flywheel weights really work? And how much top end do you lose when you have one. How much does a couple golf ball size dents in the pipe effect the power?
I'm planning on replacing the pipe but am curious to see If i can feel the difference. Also, any suggestions on brands of pipes, reeds, pistons,etc. (hopefully from someone who has ran this bike before)