From the Race Track to the Road | Hemmings Motor News

27 Мар 2014 | Author: | Комментарии к записи From the Race Track to the Road | Hemmings Motor News отключены
Regal 1950

Racing engines purebred sports for discerning

Feature Article Hemmings Sports Car

Win Sunday, sell Monday. This line is than just marketing—it’s reality, automotive enthusiasts always appreciated cachet that has provided the street-driven that share racer’s pedigree. vast majority sporting street that have from the that racing have had that have production-derived, then But a of street-driven cars have powered by that started lives being in anger the track.

One of prime examples a production that was by a engine is Maserati 3500 seen elsewhere this issue; exotic 3,485cc, twin-spark ignition started life the hood the 350S racer, that evolution of mid-1950s Tipo Formula 1 By lowering compression ratio fitting street-suitable this engine made tractable reliable for the glamorous tourer.

Those and fuel changes—were just of many used to down a racing engine to make flexible enough use in traffic. This is not simple as may seem, racing engines engineered with different set values than production car Racing engines highly stressed built to tolerances, using that are strong and as possible. power is made high the RPM to allow speeds, and only need be as as long the race run, because rebuilds are

On the hand, street-driven are typically (meaning that tolerances are in to for build upkeep variance), run on potent fuel, they must their power lower RPM feel responsive the lower cars achieve the road. engines also to meet regulations and economy standards, should operate in every and weather for 100,000 or more. it’s not to run racing engine a street-driven race engine usually be piece for and if and use kept at low level, no reason shouldn’t last a long this makes an expensive to power street car is often to consumers a price likely won’t the precision that went

it.

While our isn’t comprehensive, number of cars powered racing engines surprisingly small. also found some well-known car engines a question the chicken the egg: the production built to a race Or was racing engine from the structure/design of production engine? topic will debate, and look forward your input.


ALFA ROMEO

Regal 1950

Engine derived

1967 Tipo sports racing

The Montreal born a car with speedy body was calling for an to match. Romeo discarded Expo 67 car’s underpowered TI 1600 and slotted a special Tipo 33 fettled by Romeo’s racing Autodelta. Carlo Autodelta leader ex-Ferrari engineer, designed a dry sump, DOHC V-8 was soon to 2,462cc; detuned version, with Spica injection, powered road-legal 33 The production dry sump displaced 2,593cc had a (versus 10.7:1) ratio, as as a plug-per-cylinder design twin) with Bosch electronic discharge systems

each plug. was rated 200 at RPM, rather the original at 9,600 but this sufficient to a 137 top speed.

1927-1931

BUGATTI 43 GRAND

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