Weber 50DCOA/3 carburettors pushed power up to at 5800 rpm. With this power, the 735 LM could hit on the Mulsanne Straight at Le Mans. Both engines used dry sump lubrication. I2 prototype Enzo Ferrari and Aurelio Lampredi were interested in creating extremely reliable engines for racing use. In 1955, after seeing the success of Lampredi's Inline-4 engines, the pair considered an Inline-two engine for the slowest, twisty racing courses. Lampredi built a prototype tipo 116 with 4 valves per cylinder and 2.5 L (2493 cc) of displacement. Bore and stroke were unusual 118 mm by 114 mm. Project was codenamed 252 F1, as per naming convention. The engine produced at 4800 rpm on the test bench, but broke the crankshaft due to poor balance. The project was abandoned shortly after in favor of more-conventional I4 engines. See also List of Ferrari engines References Bibliography Lampredi Formula One engines Gasoline engines by model Straight-four engines Straight-six engines V12 engines