SIATA Sport Corsa 750 (Information collected and presented by John de Boer … Any news welcomed at: [email protected]) “Sport Corsa” refers to the nature of racing categories in Italy during the late 1940’s into the 1950’s. Many cars were built to compete in more than one form of racing. “Sport” category cars, sometimes divided into “Sport Nazionale” and “Sport Internazionale” with slightly different rules, had specific requirements that required road equipment that made the cars legal for use on the open road. There were also “Corsa” category racing events that allowed the removal of fenders and lights as well as the use of better fuels. Better fuels could also be used for some “Sport Internazionale” events. SIATA -- Tipo SC (also known as “TC”) 1947-50 During 1947 S.I.A.T.A. started building a small series of sports racing cars which were numbered "SC" (“Sport Corsa”) by SIATA. This was the first “series” of cars to carry actual SIATA chassis numbers. Most of the previous “Siata” cars used either pre-existing chassis (mostly Fiat) numbers or, in a few cases, a ‘Numero d’ufficio” assigned by an authorized motoring authority. Some cars were built 1947 and 1948 on Fiat chassis but the tubular chassis cars were those that were numbered by SIATA,. It may be of interest to know that in 1947, the name S.I.A.T.A. stood for “Societa Italiana Applicazioni Techniche Auto-Aviatorie”. During 1949 the acronym remained but was altered to “Societa Italiana Auto Trasformazioni Accessori”. This means that many of these “SC” cars were built under the first name and that most of the Amica, Daina, 300BC and later cars, were built under the latter name. The primary engine used in these cars is derived from FIAT 500 which originally appeared 1936 as a side-valve engine. Beginning 1936, SIATA built and marketed an overhead valve conversion kit for the Fiat 500. As with earlier conversions they devised for the Fiat 514, Fiat 508 and others, the cylinder head was called “Supertesta”.Various versions were made. In 1948, Fiat followed SIATA’s lead and did their own OHV engine design for the 500B, which soon became the 500C. Fiat 500B engines used in the Fiat 500C had some changes from the earlier 500B engines, the most notable being the use of aluminum for the cylinder head casting. Siata continued to sell and install ohv kits for the earlier Fiat engines and the new 500B engine required a new design. SIATA built specialized ohv heads for those engines as well, claiming increased performance and no loss of economy. These were called Tipo “B” and were made available in two basic forms, “Turismo” and “Sport”. The “Sport” version raised the compression ratio significantly, had enlarged porting and had enlarged valves. Siata advertised that it would allow a doubling of the horsepower available from the earlier side-valve engine. In fact, even more power was available if one was willing to make major changes to the bottom end of the engine and use better fuels. Please note that these cars were sometimes called “TC” in print references. This seems to have been intended to promote a new engine from Siata that was rarely used. SIATA SC – car by car chassis engine tipo notes telaio motore tipo notizie SC001 motore ((SC-001)) SC spider siluro Motto Siata – Torino (for Renato Ambrosini, Italian Champion 1948) ??#117 Ambrosini / Borgialli Mille Miglia 2.5.48 rit. foto - Dall'Amico, LaSport p25 ??#117 Ambrosini II Como - Lieto Colle 30.5.48 3rd o/a (1st/ Sport 750) ??# Ambrosini Coppa Michelin - Valentino 4.9.48 (2nd/ Sport 750) SC-002 ?? ??#156 Ambrosini Circuito del Garda 23.10.48 rit. foto AI 1.11.48 p40 SC-002 ?? ??#10 Ambrosini Corsa Automobilistica Mirafiori 31.10.48 (1st/ Sport 750) ??# Ambrosini XV Vermicino - Rocca di Papa (Coppa Gallenga) 16.11.48 (1st/ Sport 750) Ad #117 “foto Dall’Amico, reproduced in Enrico Nardi – A Fast Life p50 20.4.49 Certificato d'Origine (The true origin would certainly have been earlier to generate the history listed above.) "SIATA DERIV. FIAT" "16HP" (10HP? taxable) Telaio SC-001 Motore SC-001 ??#244 Ambrosini / D. Borgialli MM 24.4.49 ?? rit. Franco Donato fu Stefano - Messina 3.3.51 Saro Gianni Bertazzi fu Nicolo - Acireale #146 Saro Bertazzi / X GdS 9.3.52 Pubblifoto Palerm ino OttoVu p725 ?? - ?? Fitted with motore FIAT 500*026452* w/ SIATA cylinder head (OHV conversion), 28DR carb. "lifters are larger (10.5mm/20mm) than standard 500A (10.0mm/18mm) Finarte Auction - Modena 17.6.89 Russinof – FL, USA with spare engine 021608, steering wheel marked with "G.G." #134 Grady / Grady MM 1990 #176 Martin / Martin MM 1992 Yamada – Japan #135 Yamada / Okano MM 1997 foto Speciale MM 2000 p12 fitted with engine N. 030632 by Yamada #8 Oberti La Festa MM - J 10//98 2013 ?? - ?? SC002 motore ((S3 001)) SC Sport spyder 2 posti spider siluroMotto 21.4.49 Cd'O (As noted above, we may find that this car was used by Renato Ambrosini at times in place of chassis 001?) 22.7.49 Tullio De Orsola di Vittorio (Commerciante) – Torino 22.8.51 engine declared changed to another of new construction by Lancia (Ardea) (N. 7881) 22.8.51 Engine Cd'O of 12.7.51 and correction of HP rating. 3.1.52 Roberto Scala – Torino #150 “Lancia” Scala / Casaccia GdS 3//1952 foto in GdS1952 file #2213 Scala / Alessio Mille Miglia 25-26.4.53 rit. 3.8.53 engine declared changed to another of new construction (553?) 20.10.53? Enrico Adinolfi - Torino # Adinolfi Sassi – Superga 25.10.53 (7th/ Sport 750) SC003 (?) Not yet described. SC004 motore Testadoro SC spider Zagato avvolgente Telaio tipo Nardi ?? (RIP) - I “ricarrozzata a Milano in anni recenti” SC005 motore ((SC-005)) SC spider Zagato avvolgente 8.4.52 “S.C. 005, origine 1952, motore 54.5 x 78” Fitted with Fiat 600 engine and gearbox 29.3.62 Stefano Colombo – I Mauro Melogno – I SC006 motore ((SC-006)) SC spider siluro Motto 1948 Siata - Torino 9//1948 Displayed 15-26 September 1948 on the Siata stand at Salone Internazionale dell’Automobile – Torino foto Klemantaski 20.4.49 Certificato d'Origine Mario Paesetti - Crema (CR) “Fiat 750” #216 M. Paesetti / C. Lana Mille Miglia 24.4.49 83rd o/a (2nd/ Sport 750) “Fiat-Siata” #160 Paesetti / X II Giro dell’Umbria 29.6.49 (6th/ Sport 750) “Fiat-Siata” # “Pasetti” Bolzano – Mendola 3.7.49 (4th/ Sport 750) “S.I.A.T.A.” # M. Paesetti Mirafiori (notturna) 10.7.49 (6th/ Batteria II) “Fiat Siata” #63 Paesetti / X Coppa Internazionale delle Dolomiti 17.7.49 24th o/a (6th/ Sport 750) #84 Paesetti / X III Stella Alpina 4-7.8.49 rit. foto via website “Fiat-Siata” #48 Paesetti Susa – Moncenisio 24.7.49 (9th/ Sport 750) “Fiat 750” #28 Paesetti “Passetti” Aosta – Gran San Bernardo 28.8.49 (7th/ Sport 750) Bertazzini neg. “Fiat Siata” #16 Paesetti Pontedecimo – Giovi 18.9.49 (6th/ Sport 750) foto La P-G p141, 142, “Fiat Siata” #146 M. Paesetti / O. Marazzi Giro di Sicilia / Targa Florio 2.4.50 50th o/a (6th/ Sport 750 ??) foto Pucci Scafidi “Fiat Siata” #245 M. Paesetti / C. Lana Mille Miglia 23.4.50 rit. foto Sorlini #1039 Paesetti / Lana Coppa della Toscana 4.6.50 46th o/a (7th/ Sport 750) foto Locchi con Piermario “Fiat Siata” #129 Paesetti III Giro dell’Umbria 29.6.50 “Fiat-Siata” #54 Mario Paesetti / X Coppa Internazionale delle Dolomiti 16.7.50 rit. “Fiat-S.” #22 Paesetti XVI Susa – Moncenisio 30.7.50 (9th/ Sport 750) Fiat-Siata #26 Paesetti Aosta – Gran San Bernardo 6.8.50 entry … # Paesetti Argegno – Lanzo (Trofeo Val d’Intelvi) 23.7.50 (7th/ Sport 750) “Fiat 750” # Mario Paesetti Bologna – Raticosa 17.9.50 (10th/ Sport 750) #020 M. Paesetti / C. Lana Mille Miglia 28-29.4.51 rit. foto Sorlini entry# Paesetti Susa – Moncenisio 22.7.51 DNS (non partito) “Fiat Siata” #2339 M. Paesetti / C. Lana Mille Miglia 3-4.5.52 rit. foto Sorlini #1006 Paesetti / X Coppa della Toscana 1.6.52 foto LaSport p270 “Fiat Siata” #196 Paesetti / Lana IV Giro Automobilistico dell’Umbria (Coppa della Perugina) 12.6.52 “Fiat Siata” #46 Paesetti / X Coppa d’Oro delle Dolomiti 13.7.52 rit. (was 4th/ Sport 750 at192.700 km mark) “Fiat Siata” # Paesetti Aosta – Gran San Bernardo 3.8.52 “Siata 750” #2342 Paolo Bellotti / Leonardelli Mille Miglia 1-2.4.54 138th o/a (10th/ Sport 750) 21.4.54 Paolo Bellotti – Cremona (clearly, Bellotti owned the car earlier) # Bellotti II Circuito Automobilistico del Po 13.6.54 7.3.55 Francesco (Franco) Romei Longhena – Castenedolo (BS) #023 Romei / Brunacci Mille Miglia 30.4.55 rit. 17.2.56 Luigi Sartori – Venezia 22.12.58 LTJG Stewart L. Swihart – Napoli ?? (“college kid from Bethlehem, PA”) – PA, USA 1960 Peter John Falk Original engine said to have had a Hirsch style crankshaft with three main bearings, had thrown 2 rods. Remains sold to Russ Butler. 1962 Engine replaced by Russ Butler with FIAT 500C (motore 500B*283745* with alloy head). Siata manifolds were adapted to the 500C engine. 1964 John Risch for his son, John G. Risch, Jr – NJ, USA 1993 Bill Serri – NJ, USA Maureen Serri – NJ, USA 11//2013 Jarl de Boer – CA, USA Measured: 120” long (3050mm) & 75” wheelbase (1900mm) & 54” wide (1375mm) & 42” tall (11070mm) & 940 lbs = 427kg SC007 (?) It is easy to think that the spider sport that appeared alongside SC-006 at Torino 1948 might have been SC-007 … or perhaps it was the berlinetta “Orchidea” ? SC008 motore ((008)) SC Spider Sport 750 Carrozzeria Marazzi? 21.3.50 Cd'O (This chassis may have been bodied differently when new?) 18.4.50 Conte Ing.