Jimmy Murphy was born in 1894 but tragedy soon struck the Murphy family when his mother died while Murphy was two and his father succumbed to injuries suffered in the great San Francisco Earthquake of 1906 which left Murphy an orphan. Forced to work for a living at a young age he eventually found employment in a garage in downtown Los Angeles frequented by the local California board track racing fraternity.
Velodromes originated in France and were mostly constructed of wood. These board tracks first appeared around the turn of the century, originally for bicycles and later involving motorcycles. The Playa Del Rey board track opened in 1910 at the Los Angeles Coliseum Motordome was the first of the great wood plank automobile speedways. For years bicycle and motorcycle races were conducted on wooden velodromes, but Playa Del Rey, designed by Jack Prince brought the concept to events for race cars. Unfortunately the track burned down as wood will in 1913.
Murphy began his racing career as many other drivers had during this period as a riding mechanic joining the Duesenberg team in 1916. At that time Duesenberg's top driver was Eddie O'Donnell. In 1919 he became a full-time driver and entered in a board-speedway race in Altoona, PA. Murphy's first race ended in a crash but his driving impressed the Duesenberg brothers, Fred and Augie enough that they offered him another car with which he defeated the entire field in Beverly Hills, California. In 1920 he finished a strong fourth in the Indianapolis 500. Duesenberg had been building racing cars since 1907 and in 1920 built their first passenger car. In 1921 they set out to do battle with the best that Europe had to offer by entering three cars in the French Grand Prix. He was now the number 1 driver for the team.
One week before the race during practice, Murphy was involved in a major crash landing in a ditch with the car on top of him. He had just taken Louis Inghibert, a Frenchman who was scheduled to drive one of the four Duesenberg entries, for a few laps of the 10.7-mille course. The brakes locked and the car did a few somersaults. Both men were taken to hospital, Inghibert with four broken ribs and Murphy suffering from various internal injuries. Any other driver would have taken the next ship home but Murphy was a board man and like others of his craft often had to drive injured. Confined to a hospital bed until two hours before the race and bandaged from waist to shoulders he turned up at the circuit to the consternation of the French officials. After being assisted into his car at the start he went on and won the great classic race at an average speed of 78.1 m.p.h., shattering all several road racing records in the process. When he crossed the finishing line he had two flat tyres and a flying stone had torn a gaping hole in his radiator, but Murphy had given the other drivers a lesson in courage they would not soon forget.
According to fellow American Peter de Paolo, "The French Ballot team was stunned by this humbling defeat, so much so that its owner, Ernest Ballot, took to ranting and raving. Claiming that the Duesenbergs were junk he avowed that if the race had continued it would be the French Bollots who would have taken the victory. It took fellow Frenchman Albert Guyot to silence Ballot with the remark, 'There’s only one winner in any race: the man who gets home first.'"
Later that year a three-way feud erupted among Fred Duesenberg, Murphy, and Murphy’s patron, Tommy Milton. The beginnings of the feud is unclear and there is some controversy over whether it ever really existed beyond the natual rivalry between very competetive men. Murphy had set a new speed record in a special built car that he was only hired to prepare for Milton and later after the French victory, Murphy endeavored to purchase the car that won in France from Fred Duesenberg. During this time in American racing there was a fierce competition growing between Harry Miller on the West Coast and Duesenberg on the East. Miller had just produced his own 183-cu.-in engine and it was starting to make some noise. Murphy purchased one of the Miller engines and promptly placed it in his Duesenberg to the consternation of Fred. Calling his new hybrid the Murphy Special he competed and won the 1922 Indianapolis 500. Murphy would also win the National Championship for that year.
1923 placed second in the National Championship, even though he missed several races to go to Europe. He placed third in the Italian Grand Prix that year as part of a three Miller team. The leading competition was provided by FIAT 805s which were equipped with superchargers. Last year winner, Pietro Bordino broke his arm in practice and started the race with his arm in a cast attached to the steering wheel with a rubber band! Though spend the first part of the race at the front he could not continue due to the pain. The Miller's brakes built for the ovals of the United States could not take the strain of road racing. The cable to the rear brakes snapped yet incredibly Murphy continued to race and with only his front brakes operating he finished a brave third.