The Lotus 907 is an inline-4 automobile engine designed and manufactured by Lotus Cars. Displacing 1973 cc, it is all-alloy, and features dual overhead camshafts (DOHC) and 16 valves. It developed approximately 144 bhp with dual side-draft Dell'Orto carburetors in most markets. US cars had Zenith Stromberg carburetors. It was nicknamed "The Torqueless Wonder" for its lack of bottom end but good high end horsepower.

History

The Lotus 907 was the first production variant of the Lotus 900 series engine. The Jensen-Healey was the first production car to receive the 907. When Vauxhall unveiled its new slant-four engine at the 1967 Earls Court Motor Show its bore centres were exactly the same as those proposed by Lotus. Colin Chapman negotiated a deal with Vauxhall to buy some of their cast-iron blocks so that development of Lotus' own aluminium cylinder head could be sped up to produce the 907 engine.

Applications