Those of you who don't seem to know much about customer cars, heres some excellent posts about it.
When Tazio Nuvolari wanted to make the switch from motorcycling to car racing, he purchased two Bugatti's and started a team with Achille Varzi. Did you know that the first Monaco Grand Prix was won by W.G. Williams, driving a Bugatti he owned and painted green for Britain? The greatest victory of Giuseppe Campari's career came when he fended off fellow privateer Phi Phi Etancelin to win the 1933 Grand Prix de l'A.C.F. in his self-owned Maserati. Marcel Lehoux and Prince Bira are just two from that era who managed to become highly successful without the help of a factory -- and then there were the enthusiasts, like Earl Howe.
But you've already established you "don't stick to history". So, did you know that when he came over to Europe, Fangio carved out his reputation by winning at Montlhery, Pau, and Perpignan in a Maserati the Argentinian government had given him? The uncrowned champion of the '40's, Jean-Pierre Wimille, earned his invitation to the Alfa factory team by winning events in one of the few Alfa 308's ever built.
Something more modern suit your taste? What about Rob Walker winning nine championship Grand Prix's with Maurice Trintignant and Stirling Moss in private Cooper's and Lotus'? James Hunt scoring a slew of podium's and good results in a private March in 1973 before Lord Hesketh elected to build his own car (and run out of money doing it)?
Or maybe "success" all depends on how it is measured. Mimmo Dei, Carel Godin de Beaufort, Reg and Tim Parnell, and Jo Bonnier, even if they couldn't contend for a win, added some much needed character to the paddock whenever they elected to show up.
But lastly, if a team would rather purchase a year-old car and "participate to finish eleventh or twelfth", isn't that their problem? Do you realize the amount of exposure you gain from just being a bit player in the Formula One fraternity? And just because you want "every team to manufacturer their own car" does not mean that's the way it has always been (or the way it should be).
--------
The first McLaren's were actually modified Cooper's that Bruce took down to the Tasman Championship for him and Phil Hill, but when he made a clean break in 1966 he did it with his own car. He toyed with a Ford and Serenissima engine, before in 1967 finally settling for a B.R.M. V8 -- when that burnt out, Dan Gurney took him into his Eagle team as No. 2 (Ginther having retired after failing to qualify at Monte Carlo and Indianapolis).
As for the Scuderia Ferrari, Enzo was the "official" racing arm of Alfa Romeo, and with a few general exceptions, like 1933, the year that Alfa withdrew their P3's and rested on their laurels leaving him to field outdated Alfa Monza's, he was the factory. 1938 was the last year of that arrangement. In 1939, the Grand Prix Alfa's were all entered privately -- the factory instead concentrated on Voiturette racing. Part of the reason why Ferrari decided to start his own company at Maranello is that he wanted to prove his success was not all because of Alfa.
As for Formula One, no one ever got their hands on an Alfa Romeo Alfetta. Surprisingly, however, there were several private Ferrari's that showed up early, including Tony Vandervell's Thinwall Special and Peter Whitehead. Rudi Fischer made his name in one in 1952 and was even offered a place in the Ferrari factory team, being forced to turn down the offer as he was more of a gentleman driver.
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
theRacingLine.netSportsCarArchives.com