In rallying, engine temperature fluctuates rapidly due to load changes and altitude shifts. What thermal management strategies do you find most effective for maintaining power without compromising reliability? I'm talking about cooling systems, airflow control, and fuel mixture adjustments. How do you balance the need for cooling with aerodynamics and extra weight? Has anyone tested passive versus active regulation techniques, and what were the results? I'd appreciate your insights.
How does engine temperature management affect a rally car's performance?
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In my amateur rally car tests, installing a thin-fin copper radiator and a high-pressure water pump, combined with a thermostat that opens at 80°C, kept the temperature below 95°C without adding excessive weight. Additionally, I used side air intakes that close when the engine is cold to avoid aerodynamic penalties.