Ferrari 625 LM
|Substitute||Ferrari 121 LM|
|Replaced by||Ferrari 335 S |
Ferrari 250 Testa Rossa
|Engine||Ferrari four-cylinder in the longitudinal front line|
|Transmission||Manual transmission four-speed plus reverse .Rear-wheel drive .|
|Dimensions and weights|
|Debut||28 June 1956 at the 24 Hours of Le Mans|
|Drivers||Olivier Gendebien , Maurice Trintignant , Phil Hill, André Simon , Alfonso de Portago and Duncan Hamilton|
The LM 625 was a car from the competition produced by Ferrari in 1956 in three copies . It was designed and built to participate in the 24 Hours of Le Man
After the 1955 Le Mans disaster, the ACO reduced engine size and restricted prototype entries for the 1956 24 Hours of Le Mans to control the speed and danger of the race. Ferrari could not enter its 1956 3.4 L 860 Monza and 3.5 L 290 MM in race, so it instead modified three 500 TR barchettas to take the larger 2.5 L engine, and entered them as the 625 LM. The engine was only slightly modified from the 625 F1 with compression reduced to 9:1 and two Weber 42DCOA carburettors used. Of the three, only the car of Gendebien/Trintignant finished, placing third to the privately entered Ecurie Ecosse Jaguar D-Type and a factory entered Aston Martin DB3S (both these models had been produced and sold in sufficient numbers to be classed as 'production' sports cars and therefore not subject to the 2.5 litre restriction on 'prototypes').
The engine was a four-cylinder in-line longitudinal front, and was designed by Aurelio Lampredi . The cylinder head and cylinder block were manufactured in alloy light . L ' bore and stroke were respectively 94 mm and 90 mm, carrying the capacity to 2498.32 cm³ . The compression ratio was 9: 1. The power delivered by the engine was 220 hp at 6200 rpm .
The distribution was formed by a dual overhead cam head who commanded two valves per cylinder . The ' power , not forced , was by two carburettors double body brand Weber and model 42 DCO / The lubrication was dry sump , while the clutch was twin-plate .
The suspension front were independent, and included wishbones and an anti-roll bar, while the rear ones were formed by a rigid axle and twin radius. Both rode coil springs and shock absorbers hydraulic. The brakes were hydraulic drum , while the gearbox was manual four-plus reverse . The steering was worm and sector gear . The traction was back .
The frame was tubular steel , while the body was spyder .
The LM 625 reached the speed maximum of 250 km / h .