Well, I went and bought a dirtbike today :yeehaw:
It's a 1983 Suzuki RM250. It has an Answer spark arrester, wiseco piston, and Boyesen reeds. I think I got a decent but not great deal on it, $600. Around here I've seen lots of 84's sell for $850-1000, if that's any comparison.
It's a great bike, very very fast (too fast), but no bottom end. Since I have no plans to race it, this presents a problem. I managed to stall the thing about 5 times when I was trying to get to a little riding area near the previous owner's house. I had to go down a steep hill, up the other side (basically a 15 foot deep ditch alongside the road), then down another hill to get to a little circle track/mud pit. I stalled it at the top of the hill letting the clutch out, at the bottom of the next one (not enough speed), then at the top of the hill letting the clutch out again. You get the picture. I took it for a quick ride down the little country road, and wow. Once it gets the rpms up, it absolutely takes off. After spending about 5 seconds in the bottom of first gear, I was in 5th gear less than 10 seconds later.
How should I go about adding more low end power? my monthly income hovers right around $0, so cheaper would be much better. I've heard that the motor on the 83's is the same as the 82, just with a different head and timing. (I read this from <a href="http://vmx.livewire.gen.nz/magazine/83RM250D/83RM250D.htm" target="blank">http://vmx.livewire.gen.nz/magazine/83RM250D/83RM250D.htm</a>) Would changing the timing improve low end? How much good would an aftermarket pipe do? I've heard that flywheel weights are the best way to go, where can I find one for this old of bike?
It's a 1983 Suzuki RM250. It has an Answer spark arrester, wiseco piston, and Boyesen reeds. I think I got a decent but not great deal on it, $600. Around here I've seen lots of 84's sell for $850-1000, if that's any comparison.
It's a great bike, very very fast (too fast), but no bottom end. Since I have no plans to race it, this presents a problem. I managed to stall the thing about 5 times when I was trying to get to a little riding area near the previous owner's house. I had to go down a steep hill, up the other side (basically a 15 foot deep ditch alongside the road), then down another hill to get to a little circle track/mud pit. I stalled it at the top of the hill letting the clutch out, at the bottom of the next one (not enough speed), then at the top of the hill letting the clutch out again. You get the picture. I took it for a quick ride down the little country road, and wow. Once it gets the rpms up, it absolutely takes off. After spending about 5 seconds in the bottom of first gear, I was in 5th gear less than 10 seconds later.
How should I go about adding more low end power? my monthly income hovers right around $0, so cheaper would be much better. I've heard that the motor on the 83's is the same as the 82, just with a different head and timing. (I read this from <a href="http://vmx.livewire.gen.nz/magazine/83RM250D/83RM250D.htm" target="blank">http://vmx.livewire.gen.nz/magazine/83RM250D/83RM250D.htm</a>) Would changing the timing improve low end? How much good would an aftermarket pipe do? I've heard that flywheel weights are the best way to go, where can I find one for this old of bike?