Ferrari 412 S.

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Ferrari 412 S, (with the Tipo 141 4.0 liter V12 engine)

The Ferrari 412 S was a Scuderia Ferrari racing car from 1959, which was created as a one-off. The car was originally a ( prototype ) under the name Ferrari 312 S was built and was used only briefly later (and extensively modified) got it then the designation 412 S .

modification

the engine of the 412 S.
in the foreground the 1958 Ferrari 412 S "Monza" s / n 0744. Behind it a 250 Testa Rossa for comparison
The Ferrari 412 S in the showroom during the auction at RM Sotheby's

The only copy of the Ferrari 412 S was developed from the experimental chassis of the 312 S in combination with the engine that was previously used in the Ferrari 412 MI . The car kept the chassis no. (s / n 0744) of its predecessor. The body was designed and built (as with the 312 S) by Carrozzeria Scaglietti . The installed engine was the Tipo 141 with two overhead camshafts, as it had been used in June 1958 in the 412 MI monoposto at the 500 miles of Monza . Because of this, the car is sometimes mistakenly referred to as the 412 MI. The engine was still early in the Ferrari 335 S of Alfonso de Portago , with whom he at the Mille Miglia in 1957 crashed employed.

The Tipo 141 engine designed by Vittorio Jano is a V12 engine with two overhead camshafts per cylinder bank and two valves per cylinder. The displacement was 4023.32 cm³, with a 77 mm bore and 72 mm stroke. The maximum power was 432 hp (318 kW) at 8000 rpm. The compression was 9.9: 1 and the mixture was processed by six Weber 42DCN carburetors. The engine had two spark plugs per cylinder. The capacity of the fuel tank has been increased from 130 liters to 196 liters.

The suspension of the wheels differed only slightly from the previous model: the 412 S was equipped with different dampers, and in 1959 the drum brakes were replaced by disc brakes. The 412 S was one of the first Ferraris with this improvement.

Racing history

After the conversion was completed, the car was delivered to John Von Neumann, a Ferrari dealer and racing driver from California. Von Neumann took part in the USAC Road Racing Championship for the Ferrari Representatives of California team in 1958 .

With Phil Hill at the wheel, the car was used on September 28, 1958 at the USAC International Formula Libre Grand Prix in Watkins Glen . Hill dropped out because of a broken drive shaft, and later complained of handling problems.

On October 12, 1958, Hill started the " Grand Prix Riverside 200 Miles" , the fourth race of the USAC Road Racing Championship. Hill qualified in second place. During the race, Hill and Chuck Daigh changed top positions several times, but Hill had to pit three times, among other things due to problems with the fuel pump - and finally retired on lap 58 (four laps before the end of the race).

Also in 1959 the 412 S was USAC Road Racing Championship used: the Kiwanis Grand Prix at the Riverside International Raceway sat Richie Ginther driving. He qualified for first place on the grid and won the race. This was the only victory for the Ferrari 412 S. At the next race, also in Riverside, Ginther qualified again for pole position, but had to retire on lap 35 due to problems with the fuel supply. In December Ginther got a 2nd place at the Governor's Trophy in Nassau (Bahamas). In the following 2 races of the Tropy Ginther retired.

Richie Ginther's last race at the wheel of the 412 S took place at the 1960 Los Angeles Times Grand Prix, where he retired due to transmission problems.

In 1961 the American Frederick Knoop started with the car in the SCCA series (Sports Car Club of America) and achieved third place and second place in the main race in the preliminary run in Riverside. Skip Hudson, another US driver, started a few races in the same year but was unsuccessful.

Whereabouts

The Ferrari 312 S / 412S was sold for $ 5.6 million at an RM Sotheby's auction in Monterey in August 2006.

Technical information / overview / comparison 312 S vs. 412 p

In its capacity as a prototype and experimental vehicle, various systems (such as suspension components and brakes) were tried out on this Ferrari (both as the 312 S and the 412 S) (Italian: "Prova").

Ferrari 312 S. Ferrari 412 S.
engine 60 ° V12 gasoline engine Tipo 157 installed lengthways at the front, cylinder heads and engine block made of aluminum
Displacement 2953.21 cm³ 4023.32 cm³
Bore × stroke 73 x 58.8 mm 77 × 72 mm
Compression ratio 9.4: 1 9.9: 1
Power at 1 / min 320 hp (235 kW) at 8400 rpm 432 hp (318 kW) at 8000 rpm
Specific performance: 108 PS / l (79.4 kW dm −3 ) 107 hp / l (78.7 kW dm −3 )
Valve control Two overhead camshafts per cylinder bank with two valves per cylinder
Mixture preparation six Weber 42 DCN carburettors
ignition One spark plug per cylinder, two ignition coils Double spark plugs per cylinder, two ignition coils
cooling water
transmission 4-speed gearbox with reverse gear (rear-wheel drive)
Brakes Drum brakes on all wheels Drum brakes (from 1959 disc brakes) on all wheels
Front suspension Independent suspension with wishbones of different lengths,
coil springs with telescopic dampers 		Independent suspension with wishbones of different lengths,
coil springs, hydraulic shock absorbers
Rear suspension de Dion axle , double trailing arms, transverse leaf springs,
telescopic damper, anti-roll bar 		de Dion axle, double trailing arms, transverse leaf springs,
hydraulic shock absorbers
Body and frame Aluminum body, tubular steel frame
wheelbase 2350 mm
Track width front / rear 1328 mm / 1310 mm
Front tire size 6.00 × 16 in
Rear tire size 7.00 × 16 in
Dimensions L × W × H (mm) unknown 4204 mm × 1651 mm × 1041 mm
Empty weight (without driver) 750 kg 880 kg
Tank capacity 130 liters 196 liters
Top speed 280 km / h unknown
Power to weight ratio 0.427 PS kg −1 (314 W kg −1 ) 0.49 PS kg −1 (361 W kg −1 )

Remarks

  1. ↑ Various sources indicate that different damping systems were tested on both vehicles.

Web links

Commons : 1958 Ferrari 312 S / 412 S s / n 0744  - Collection of images, videos and audio files

Individual evidence

  1. ↑ a b https://www.ferrari.com/de-BE/auto/312-s
  2. ↑ a b c https://www.ferrari.com/de-DE/auto/412-s
  3. ↑ a b c 1958 Ferrari 412 S Scaglietti Spyder - Images, Specifications and Information. Retrieved August 13, 2020 .
  4. ^ Godfrey Eaton: Ferrari: The Road And Racing Cars . Ed .: Haynes Publishing. Haynes Publishing, 1983, pp. 90-92 .
  5. ↑ http://mitorosso.com/412-mi-spyder-scaglietti/
  6. ↑ https://www.racingsportscars.com/driver/photo/John-von%20Neumann-USA.html
  7. ↑ https://www.racingsportscars.com/race/Watkins_Glen-1958-09-28.html
  8. ↑ https://www.racingsportscars.com/chassis/results/0744MI%20%5b412MI%5d.html
  9. ↑ https://www.racingsportscars.com/race/Riverside-1958-10-12.html
  10. ↑ a b c d The Beast | Issue 104 | Forza | The Magazine About Ferrari. Retrieved August 14, 2020 (American English).
  11. ↑ https://www.racingsportscars.com/results/Riverside-1959-07-19.html
  12. ↑ https://www.racingsportscars.com/driver/photo/Skip-Hudson-USA.html
  13. ↑ Detail - 412 MI s / n 0744MI. Retrieved August 15, 2020 .
  14. ↑ https://www.racingsportscars.com/type/photo/Ferrari/412%20MI.html
  15. ↑ 1958 Ferrari 412 S Sports Racing Car | Monterey Sports & Classic Car Auction 2006. Accessed August 14, 2020 .
  16. ↑ a b Ferrari 412 S (1958) - Ferrari.com. Accessed August 18, 2020 .