Increased Air Flow VS Radiator Change
The opening of the hood (bonnet) only buys time before the engine heats (#1) compared to the same test setup (#3). Relieving the engine compartment of airflow restrictions had an insignificant affect on temperature with stock air flow conditions. The addition of a more efficient radiator (#4) did not improve cooling over a stock radiator (#3) until there was an increase of air flow through the radiator by a more efficient fan (#7).
