You can't run a hot engine on old oil. High-performance 250s shear oil molecules much faster than standard commuters. To keep your machine "hot" but healthy, you should:
Tight valves are a leading cause of power loss and heat buildup. www xxx 250 hot
These allow the cooling system to operate at a higher pressure, which raises the boiling point of the fluid. You can't run a hot engine on old oil
Advancing the spark to happen at the exact millisecond required for maximum torque. 4. The Importance of Maintenance These allow the cooling system to operate at
For air-cooled models, adding an external oil cooler is the single best way to ensure your oil doesn't break down under high-stress "hot" conditions. 3. Tuning for Speed: The Electronic Edge
Redlining the Limit: Maximizing Performance in 250cc High-Output Engines
"Hot" setups use expansion chambers or high-flow headers to scavenge exhaust gases out of the cylinder as fast as possible. 2. Managing the Heat: The "250 Hot" Challenge