the 85/86 lt250r were terrible, the engine sucked and the frame was too narrow. The 87 was a lot better but still had some issue.
The 87 had a power valve, longer stroke, and 6 gears, the 86 was bigger bore, non PV and 5 speed. I loved my brothers old 92, was fun and so light. His hybrid is better too but the suzuki needs too much work to keep running.