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OSCA MT4

January 31, 2023

The OSCA MT4, also spelled the O.S.C.A. MT4, or the Osca MT4, is an Italian sports car prototype, designed, developed, and made by Officine Specializzata Costruzioni Automobili, between 1948 and 1956, but was raced and used in active competition until 1966.[1][2][3][4]

OSCA MT4
1955 OSCA MT4
Overview
ManufacturerO.S.C.A.
Also calledOSCA 1500 TN
Production1948–1957 (72-79 produced)
AssemblyBologna, Italy
LayoutFR layout
Powertrain
Transmission5-speed manual
Dimensions
Wheelbase2,200 mm (86.6 in)
Lengthvaries
Widthvaries
Heightvaries
Kerb weightaround 600 kg (1,323 lb)
Chronology
SuccessorOSCA FS 372

Due to the variety of engines of different displacement sizes and the comparatively large number of chassis built (thanks to strong sales), the OSCA MT4 had an unusually long service life competition car. Thus the remarkable success story for the racing car model.[5] Between 1948 and 1966, it managed to rack up 92 wins, 109 class wins, 9 pole positions, and 194 podiums - an impressive record for such a small manufacturer without the means of sustaining a factory competition effort.[6][7][8]

The foundation of OSCA

 
Ernesto (seated) and Bindo Maserati in an early MT4 chassis in April 1948.

In 1937, five years after Alfieri's death, Ettore and Ernesto Maserati were forced to sell Maserati after financial turmoil. However, the contract with the new Maserati owner Adolfo Orsi meant that the brothers had to remain with their former company for a ten-year term. In 1947 they were finally free to go their own way; Officine Specializzata Costruzioni Automobili Fratelli Maserati was founded and the first vehicle type, the MT4, was built.[9] In its original form, the chassis and engine were based on the Maserati Tipo 4CL single-seater racing car, first built in 1939. Development of the MT4 began immediately, using plans and parts from the Maserati 4CL. In all, OSCA built 77 chassis between 1949 and 1956 (some sources state 72, some 78).

Design

OSCA's first automobile was the MT4, for Maserati Tipo 4 cilindri. The initial cars used a Fiat 1100 block and the engine developed 55 hp (40 kW).[10] OSCA soon developed a new 1,092 cc engine, which produced 72 PS (53 kW; 71 hp) at 6,000 rpm, had a in-house designed aluminium block and alloy head. Some sources state that 9 cars were built with 1.1-liter engines.[9] Originally a single-cam design, in 1950 this was changed to a twin-cam unit, indicated by using the name MT4-2AD, with "2AD" signifying 2 Alberi di Distribuzione (twin camshafts). The 2AD was originally available as an 1100 or a 1350. The bore and stroke changed over the years and to allow competing in various classes, meaning that the displacement of the engines increased from 1092 cc via 1342 cc and then 1453 cc until finally reaching 1492 cc. The four-speed quick-shift gearbox was also an in-house design. The bodywork on early models was a two-seater roadster with or without cycle fenders, lights, and the various other accoutrements required to make it street legal.[11] OSCA only supplied the chassis, the bodies were manufactured by Italian bodywork companies (or in some cases, by the buyers themselves[10]) to the requirements of the individual buyers. Modifications and changes to keep cars competitive or due to changes in taste means that few preserved cars look much like each other.

These automobiles were mainly barchettas, but a few were built as berlinetta bodies by Pietro Frua and Vignale. A Vignale bodied MT4 Berlinetta won in the 1,100 cc class at the 1953 24 Hours of Le Mans.[12]

Changes

In 1949 the engine was modified to 1,342 cc capacity, with power increasing to 80–90 hp (59–66 kW) at 5,500 rpm depending on the tune specified.[13] In 1950, the new DOHC (MT4-2AD) raised power to a maximum of 100 hp (74 kW) at 6,300 rpm for the 1350 engine, and in 1953 the engine was enlarged to 1,453 cc to compete in the 1500 cc class, producing 110 hp (81 kW) at 6,200 rpm.[14] Note that outputs are generally in SAE gross and are therefore higher than they would be under modern ratings systems. In 1954, this was bored out to a square 78 mm × 78 mm (3.07 in × 3.07 in) for 1,491 cc and fitted with twin sparkplugs. This "proper" 1500 engine produced 120 hp (88 kW) at 6,300 rpm and was aimed straight at the Porsche 550.[15] Worth noting is that the bore and stroke of the 1500 engine are the same as those of the Maserati 4CL, also developed by the Maserati brothers.[16]

In a period road test, Road & Track got a MT4-2AD 1500 (chassis number 1148) to reach 120 mph (193 km/h) in spite of having been fitted with the lowest gearing, while doing the 0–60 mph (0–97 km/h) sprint in 7.0 seconds.[17] The listed price was $10,000, enough to buy three V8-engined Ford Thunderbirds with a good margin, but Road & Track stated that the OSCA outperformed every lower-priced car ever tested by them. The reviewers also remarked on the rarity of an Italian-made car matching the manufacturer's claimed top speed, acceleration, and weight figures.[18] The trunk on this example did meet the requirements for competition but mainly housed a spare tire and a 20-US-gallon (76 L) fuel tank.[17] By this time, about half of OSCA's production was earmarked for the United States, with another ten percent being exported elsewhere.[15]

  •  

    1949 OSCA MT4 'Siluro'

  •  

    1952 OSCA MT4 MM Spider

  •  

    Le Mans class winner MT4 Vignale Berlinetta

  •  

    1954 OSCA MT4 1450 Spider by Vignale (fitted with a 1500 engine)

  •  

    OSCA MT4 Morelli Spider 1955

  •  

    The OSCA twin cam engine

  •  

    1955 MT4 1500 Coupé by Vignale, one of a handful of MT4 berlinettas

1500 TN

The final iteration was the 1500 TN (for Tipo Nuovo, "new model") engine, tuned to 125 hp (92 kW). The first such engine was installed in the Simpson Special; a record-breaking streamliner on an MT4 chassis which beat numerous land speed records at the Bonneville Salt Flats in 1955. In competition, however, the TN engine was too powerful for the MT4 chassis and the Maserati brothers quickly developed a new, more rigid design also called the 1500 TN. The MT4 design, however, was finally reaching the end of its development. The fragile 1500 TN, while fast, rarely finished and only three cars were built in 1955. Three more, called S 1500 TN were finished for the 1957 season and had another five horsepower.

After the MT4, the all new tipo 372 DS engine with desmodromic valves (hence "DS") was developed for the succeeding FS 372, of which five were built from 1957 until 1959.[19] One of these belonged to Sir Stirling Moss, who raced it in historic races across the globe until his retirement in 2011. Versions of this engine went on to be used in coupé and convertible models of regular Fiats from 1959 to 1966.

  •  

    1955 OSCA 1500 TN (chassis 1169)

  •  

    1500 TN interior

  •  

    1955 OSCA 1500 TN (chassis 1163)

  •  

    Luigi Musso driving chassis 1163 to a class victory (S1.5) at Rome 1956

The OSCA MT4 is best known for the 1954 12 Hours of Sebring, where it won outright against much more powerful cars with drivers Stirling Moss and Bill Lloyd[20] as part of the Briggs Cunningham Team. In the April 6, 1992 issue of AutoWeek, Cunningham stated that, of all the automobiles he built, owned, and raced, the OSCA was his favorite racecar.[21]

Racing history

The starts and racing successes of the MT4 are extensive and go beyond the usual framework of sports car models: 449 entries, 939 race starts, 81 overall, and 98 class victories.

The first use of an MT4 was in 1948 in the Coppa Acerbo sports car race at Pescara. Driving chassis 1101 was Franco Cornacchia, who failed to finish the race.[22] The MT4's first success came later that year, at the Grand Prix of Naples, where it was driven to a win by Luigi Villoresi. In 1949, Giulio Cabianca won a sports car race in Ferrara and three weeks later a race in Tigullio.[23][24] The Giro delle Calabria was won by Dorino Serafini and Alberico Cacciari ahead of Luigi Fagioli, who also drove an MT4.[25]

From 1950 onwards, the MT4 established itself as a fast racing car that was not prone to defects and was hard to beat in the racing classes with displacements of less than 2 liters. At the Mille Miglia in 1951, Luigi Fagioli won the class for sports cars with displacements of up to 1.1 liters. In the overall standings, he finished eighth, just under an hour behind the winner Villoresi in the Ferrari 340 America Berlinetta Vignale. Cabianca repeated the class win in 1952. In the same year, the model was driven for the first time in the 24 Hours of Le Mans. Mario Damonte and a French racing driver using the pseudonym Martial drove a Vignale-bodied 1.3-liter MT4. Their race ended after 19 hours of driving due to a damaged clutch.

With the start of the sports car world championship in 1953, MT4s were of course also used there. After countless successes at national races in Europe and the United States, 1954 saw the greatest international success for an MT4. At the 12 Hours of Sebring, Stirling Moss and Bill Lloyd won the general classification for Briggs Cunningham's team. To date, it is the only overall victory for a sports car with a displacement of less than 1.5 liters in this long-distance race.[26]

The light and maneuverable racing cars were often on a par with the high-capacity cars, especially on narrow and winding courses. This was evident, for example, at the 1956 Mille Miglia, where Cabianca and Umberto Maglioli fought for the lead in the early stages of the race with the Ferrari and Maserati works drivers. Gianfranco Stanga celebrated the last race victory with an MT4 at the Campagnana Vallelunga in 1961, ahead of an OSCA S1000 and a number of Etceterini.[27] The last known use outside of historical races was in 1966 in the sports car world championship. Giuseppe Rossi finished 38th overall and won the class for prototypes with a displacement of up to 2 liters at the Mugello 500 km race.

References

  1. ^ "1954 OSCA MT-4 Sports Racer". HowStuffWorks. October 24, 2007. from the original on July 5, 2022. Retrieved June 13, 2022.
  2. ^ "1955 OSCA MT 4 - -2AD 1350". www.classicdriver.com. from the original on 2022-06-13. Retrieved 2022-06-13.
  3. ^ https://www.hemmings.com/stories/article/osca-winner-1956-osca-mt4 2021-09-18 at the Wayback Machine
  4. ^ Berg, Nik (2021-02-01). "This OSCA MT4 is the Italian racer you never knew". Hagerty. from the original on 2022-06-13.
  5. ^ "1954 OSCA MT4 1500 Sports-Racer". from the original on 2022-06-13. Retrieved 2022-06-13.
  6. ^ https://www.racingsportscars.com/type/Osca/MT4.html 2022-06-13 at the Wayback Machine
  7. ^ "1952 OSCA MT4 LM #1120 Vignale Berlinetta". Audrain Auto Museum. from the original on 2022-08-30. Retrieved 2022-06-13.
  8. ^ "1952 OSCA MT4". conceptcarz.com. from the original on 2022-06-13. Retrieved 2022-06-13.
  9. ^ a b Andrew, Tim (2011-08-02). "Giant Killer: The OSCA MT4 was the little car that did - Automobile Magazine". MotorTrend. from the original on 2021-09-26.
  10. ^ a b . ClassicCar.com. The Collector Car Network, LLC. Archived from the original on 2023-01-09.
  11. ^ Vassal, Jacques (October 2008). "Sœurs Ennemies" [Sister enemies]. Rétroviseur (in French). No. 238. Fontainebleau, France: Éditions LVA. p. 40. ISSN 0992-5007.
  12. ^ "OSCA MT4 LM #1120 Vignale". audrainautomuseum.org. from the original on 2022-08-30. Retrieved 2022-06-26.
  13. ^ story 2021-09-22 at the Wayback Machine from maserati-alfieri.co.uk
  14. ^ Vassal (2008), p. 41.
  15. ^ a b [Year of records]. Greta Emme (in Italian). Archived from the original on 2023-01-10.
  16. ^ Vassal (2008), p. 42.
  17. ^ a b . Road & Track. August 1955. p. 13. Archived from the original on 2023-01-10 – via Rapley Classic Cars.
  18. ^ How does the OSCA go?,
  19. ^ Melissen, Wouter (2009-11-09). "OSCA FS 372 Morelli Spider". Ultimatecarpage.com. from the original on 2013-03-24. Retrieved 2013-02-02.
  20. ^ Dierkes, Stefan. "Pietro Frua (1913-1983) - OSCA MT4-2AD 1953". Pietro-frua.de. from the original on 2010-12-14. Retrieved 2010-07-04.
  21. ^ "1950 OSCA MT4 |". December 29, 2015. from the original on August 30, 2022. Retrieved June 13, 2022.
  22. ^ https://www.racingsportscars.com/race/Pescara-1948-08-15-6011.html 2022-06-13 at the Wayback Machine
  23. ^ https://www.racingsportscars.com/race/Ferrara-1949-05-26-7198.html 2022-06-13 at the Wayback Machine
  24. ^ https://www.racingsportscars.com/race/Tigullio-1949-06-05-7195.html 2022-06-13 at the Wayback Machine
  25. ^ https://www.racingsportscars.com/race/Giro_delle_Calabria-1949-09-25.html 2022-06-13 at the Wayback Machine
  26. ^ . Racing Sports Cars. Archived from the original on 2021-11-03.
  27. ^ . Racing Sports Cars. Archived from the original on 2022-06-13.

January 31, 2023
osca, also, spelled, osca, italian, sports, prototype, designed, developed, made, officine, specializzata, costruzioni, automobili, between, 1948, 1956, raced, used, active, competition, until, 1966, 1955, overviewmanufacturero, also, calledosca, 1500, tnprodu. The OSCA MT4 also spelled the O S C A MT4 or the Osca MT4 is an Italian sports car prototype designed developed and made by Officine Specializzata Costruzioni Automobili between 1948 and 1956 but was raced and used in active competition until 1966 1 2 3 4 OSCA MT41955 OSCA MT4OverviewManufacturerO S C A Also calledOSCA 1500 TNProduction1948 1957 72 79 produced AssemblyBologna ItalyLayoutFR layoutPowertrainTransmission5 speed manualDimensionsWheelbase2 200 mm 86 6 in LengthvariesWidthvariesHeightvariesKerb weightaround 600 kg 1 323 lb ChronologySuccessorOSCA FS 372Due to the variety of engines of different displacement sizes and the comparatively large number of chassis built thanks to strong sales the OSCA MT4 had an unusually long service life competition car Thus the remarkable success story for the racing car model 5 Between 1948 and 1966 it managed to rack up 92 wins 109 class wins 9 pole positions and 194 podiums an impressive record for such a small manufacturer without the means of sustaining a factory competition effort 6 7 8 Contents 1 The foundation of OSCA 2 Design 3 Changes 3 1 1500 TN 4 Racing history 5 ReferencesThe foundation of OSCA Edit Ernesto seated and Bindo Maserati in an early MT4 chassis in April 1948 In 1937 five years after Alfieri s death Ettore and Ernesto Maserati were forced to sell Maserati after financial turmoil However the contract with the new Maserati owner Adolfo Orsi meant that the brothers had to remain with their former company for a ten year term In 1947 they were finally free to go their own way Officine Specializzata Costruzioni Automobili Fratelli Maserati was founded and the first vehicle type the MT4 was built 9 In its original form the chassis and engine were based on the Maserati Tipo 4CL single seater racing car first built in 1939 Development of the MT4 began immediately using plans and parts from the Maserati 4CL In all OSCA built 77 chassis between 1949 and 1956 some sources state 72 some 78 Design EditOSCA s first automobile was the MT4 for Maserati Tipo 4 cilindri The initial cars used a Fiat 1100 block and the engine developed 55 hp 40 kW 10 OSCA soon developed a new 1 092 cc engine which produced 72 PS 53 kW 71 hp at 6 000 rpm had a in house designed aluminium block and alloy head Some sources state that 9 cars were built with 1 1 liter engines 9 Originally a single cam design in 1950 this was changed to a twin cam unit indicated by using the name MT4 2AD with 2AD signifying 2 Alberi di Distribuzione twin camshafts The 2AD was originally available as an 1100 or a 1350 The bore and stroke changed over the years and to allow competing in various classes meaning that the displacement of the engines increased from 1092 cc via 1342 cc and then 1453 cc until finally reaching 1492 cc The four speed quick shift gearbox was also an in house design The bodywork on early models was a two seater roadster with or without cycle fenders lights and the various other accoutrements required to make it street legal 11 OSCA only supplied the chassis the bodies were manufactured by Italian bodywork companies or in some cases by the buyers themselves 10 to the requirements of the individual buyers Modifications and changes to keep cars competitive or due to changes in taste means that few preserved cars look much like each other These automobiles were mainly barchettas but a few were built as berlinetta bodies by Pietro Frua and Vignale A Vignale bodied MT4 Berlinetta won in the 1 100 cc class at the 1953 24 Hours of Le Mans 12 Changes EditIn 1949 the engine was modified to 1 342 cc capacity with power increasing to 80 90 hp 59 66 kW at 5 500 rpm depending on the tune specified 13 In 1950 the new DOHC MT4 2AD raised power to a maximum of 100 hp 74 kW at 6 300 rpm for the 1350 engine and in 1953 the engine was enlarged to 1 453 cc to compete in the 1500 cc class producing 110 hp 81 kW at 6 200 rpm 14 Note that outputs are generally in SAE gross and are therefore higher than they would be under modern ratings systems In 1954 this was bored out to a square 78 mm 78 mm 3 07 in 3 07 in for 1 491 cc and fitted with twin sparkplugs This proper 1500 engine produced 120 hp 88 kW at 6 300 rpm and was aimed straight at the Porsche 550 15 Worth noting is that the bore and stroke of the 1500 engine are the same as those of the Maserati 4CL also developed by the Maserati brothers 16 In a period road test Road amp Track got a MT4 2AD 1500 chassis number 1148 to reach 120 mph 193 km h in spite of having been fitted with the lowest gearing while doing the 0 60 mph 0 97 km h sprint in 7 0 seconds 17 The listed price was 10 000 enough to buy three V8 engined Ford Thunderbirds with a good margin but Road amp Track stated that the OSCA outperformed every lower priced car ever tested by them The reviewers also remarked on the rarity of an Italian made car matching the manufacturer s claimed top speed acceleration and weight figures 18 The trunk on this example did meet the requirements for competition but mainly housed a spare tire and a 20 US gallon 76 L fuel tank 17 By this time about half of OSCA s production was earmarked for the United States with another ten percent being exported elsewhere 15 1949 OSCA MT4 Siluro 1952 OSCA MT4 MM Spider Le Mans class winner MT4 Vignale Berlinetta 1954 OSCA MT4 1450 Spider by Vignale fitted with a 1500 engine OSCA MT4 Morelli Spider 1955 The OSCA twin cam engine 1955 MT4 1500 Coupe by Vignale one of a handful of MT4 berlinettas1500 TN Edit The final iteration was the 1500 TN for Tipo Nuovo new model engine tuned to 125 hp 92 kW The first such engine was installed in the Simpson Special a record breaking streamliner on an MT4 chassis which beat numerous land speed records at the Bonneville Salt Flats in 1955 In competition however the TN engine was too powerful for the MT4 chassis and the Maserati brothers quickly developed a new more rigid design also called the 1500 TN The MT4 design however was finally reaching the end of its development The fragile 1500 TN while fast rarely finished and only three cars were built in 1955 Three more called S 1500 TN were finished for the 1957 season and had another five horsepower After the MT4 the all new tipo 372 DS engine with desmodromic valves hence DS was developed for the succeeding FS 372 of which five were built from 1957 until 1959 19 One of these belonged to Sir Stirling Moss who raced it in historic races across the globe until his retirement in 2011 Versions of this engine went on to be used in coupe and convertible models of regular Fiats from 1959 to 1966 1955 OSCA 1500 TN chassis 1169 1500 TN interior 1955 OSCA 1500 TN chassis 1163 Luigi Musso driving chassis 1163 to a class victory S1 5 at Rome 1956The OSCA MT4 is best known for the 1954 12 Hours of Sebring where it won outright against much more powerful cars with drivers Stirling Moss and Bill Lloyd 20 as part of the Briggs Cunningham Team In the April 6 1992 issue of AutoWeek Cunningham stated that of all the automobiles he built owned and raced the OSCA was his favorite racecar 21 Racing history EditThe starts and racing successes of the MT4 are extensive and go beyond the usual framework of sports car models 449 entries 939 race starts 81 overall and 98 class victories The first use of an MT4 was in 1948 in the Coppa Acerbo sports car race at Pescara Driving chassis 1101 was Franco Cornacchia who failed to finish the race 22 The MT4 s first success came later that year at the Grand Prix of Naples where it was driven to a win by Luigi Villoresi In 1949 Giulio Cabianca won a sports car race in Ferrara and three weeks later a race in Tigullio 23 24 The Giro delle Calabria was won by Dorino Serafini and Alberico Cacciari ahead of Luigi Fagioli who also drove an MT4 25 From 1950 onwards the MT4 established itself as a fast racing car that was not prone to defects and was hard to beat in the racing classes with displacements of less than 2 liters At the Mille Miglia in 1951 Luigi Fagioli won the class for sports cars with displacements of up to 1 1 liters In the overall standings he finished eighth just under an hour behind the winner Villoresi in the Ferrari 340 America Berlinetta Vignale Cabianca repeated the class win in 1952 In the same year the model was driven for the first time in the 24 Hours of Le Mans Mario Damonte and a French racing driver using the pseudonym Martial drove a Vignale bodied 1 3 liter MT4 Their race ended after 19 hours of driving due to a damaged clutch With the start of the sports car world championship in 1953 MT4s were of course also used there After countless successes at national races in Europe and the United States 1954 saw the greatest international success for an MT4 At the 12 Hours of Sebring Stirling Moss and Bill Lloyd won the general classification for Briggs Cunningham s team To date it is the only overall victory for a sports car with a displacement of less than 1 5 liters in this long distance race 26 The light and maneuverable racing cars were often on a par with the high capacity cars especially on narrow and winding courses This was evident for example at the 1956 Mille Miglia where Cabianca and Umberto Maglioli fought for the lead in the early stages of the race with the Ferrari and Maserati works drivers Gianfranco Stanga celebrated the last race victory with an MT4 at the Campagnana Vallelunga in 1961 ahead of an OSCA S1000 and a number of Etceterini 27 The last known use outside of historical races was in 1966 in the sports car world championship Giuseppe Rossi finished 38th overall and won the class for prototypes with a displacement of up to 2 liters at the Mugello 500 km race References Edit 1954 OSCA MT 4 Sports Racer HowStuffWorks October 24 2007 Archived from the original on July 5 2022 Retrieved June 13 2022 1955 OSCA MT 4 2AD 1350 www classicdriver com Archived from the original on 2022 06 13 Retrieved 2022 06 13 https www hemmings com stories article osca winner 1956 osca mt4 Archived 2021 09 18 at the Wayback Machine Berg Nik 2021 02 01 This OSCA MT4 is the Italian racer you never knew Hagerty Archived from the original on 2022 06 13 1954 OSCA MT4 1500 Sports Racer Archived from the original on 2022 06 13 Retrieved 2022 06 13 https www racingsportscars com type Osca MT4 html Archived 2022 06 13 at the Wayback Machine 1952 OSCA MT4 LM 1120 Vignale Berlinetta Audrain Auto Museum Archived from the original on 2022 08 30 Retrieved 2022 06 13 1952 OSCA MT4 conceptcarz com Archived from the original on 2022 06 13 Retrieved 2022 06 13 a b Andrew Tim 2011 08 02 Giant Killer The OSCA MT4 was the little car that did Automobile Magazine MotorTrend Archived from the original on 2021 09 26 a b For Sale at Auction 1955 OSCA MT4 2AD 1350 in Paris ClassicCar com The Collector Car Network LLC Archived from the original on 2023 01 09 Vassal Jacques October 2008 Sœurs Ennemies Sister enemies Retroviseur in French No 238 Fontainebleau France Editions LVA p 40 ISSN 0992 5007 OSCA MT4 LM 1120 Vignale audrainautomuseum org Archived from the original on 2022 08 30 Retrieved 2022 06 26 story Archived 2021 09 22 at the Wayback Machine from maserati alfieri co uk Vassal 2008 p 41 a b L anno dei record Year of records Greta Emme in Italian Archived from the original on 2023 01 10 Vassal 2008 p 42 a b How does the OSCA go Road amp Track August 1955 p 13 Archived from the original on 2023 01 10 via Rapley Classic Cars How does the OSCA go p 12 Melissen Wouter 2009 11 09 OSCA FS 372 Morelli Spider Ultimatecarpage com Archived from the original on 2013 03 24 Retrieved 2013 02 02 Dierkes Stefan Pietro Frua 1913 1983 OSCA MT4 2AD 1953 Pietro frua de Archived from the original on 2010 12 14 Retrieved 2010 07 04 1950 OSCA MT4 December 29 2015 Archived from the original on August 30 2022 Retrieved June 13 2022 https www racingsportscars com race Pescara 1948 08 15 6011 html Archived 2022 06 13 at the Wayback Machine https www racingsportscars com race Ferrara 1949 05 26 7198 html Archived 2022 06 13 at the Wayback Machine https www racingsportscars com race Tigullio 1949 06 05 7195 html Archived 2022 06 13 at the Wayback Machine https www racingsportscars com race Giro delle Calabria 1949 09 25 html Archived 2022 06 13 at the Wayback Machine Sebring 12 Hours Racing Sports Cars Archived from the original on 2021 11 03 Campagnana Vallelunga S1 0 Racing Sports Cars Archived from the original on 2022 06 13 Retrieved from https en wikipedia org w index php title OSCA MT4 amp oldid 1135587074, wikipedia, wiki, book, books, library,

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