page_title: Formula One engines
section_title: 1961–1965
hierarchical_section_title: Formula One engines / History / 1961–1965
caption_attribution_description: English: A British Racing Motors H16 Formula One engine. This is the final, 1968, 64-valve incarnation of the design. At the Donington Collection museum, Leicestershire, England, UK. Deutsch: Ein British Racing Motors (B.R.M.) H-16 Formel-1-Motor. Baujahr 1968 mit 64 Ventilen, ausgestellt im Donington Collection Museum in Leicestershire, England, UK.
context_page_description: Since its inception in 1947, Formula One has used a variety of engine regulations. "Formulae" limiting engine capacity had been used in Grand Prix racing on a regular basis since after World War I. The engine formulae are divided according to era.
context_section_description: Introduced in 1961 amidst some criticism, the new reduced engine 1.5 L formula took control of F1 just as every team and manufacturer switched from front to mid-engined cars. Although these were initially underpowered, five years later average power had increased by nearly 50% and lap times were better than in 1960. The old 2.5 L formula had been retained for International Formula racing, but this didn't achieve much success until the introduction of the Tasman Series in Australia and New Zealand during the winter season, leaving the 1.5 L cars as the fastest single seaters in Europe during this time. The power range was between 150 hp (112 kW) and 225 hp (168 kW).
caption: A 1968 British Racing Motors H16, 64-valve, Formula One engine
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