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| FERRARI 365/4 DAYTONA | ||||||||||||||||||||||
Modern
times
What was used in the end was a 330GTC-type chassis frame, keeping the 275s 2.4-metre wheelbase and basic layout. As well as the massive chassis, braced by crossmembers and a central X-frame, theres a lighter network of tubing on top to support body, doors, radiator and headlights. In a first for Ferrari, the bodys inner tub is formed in four glassfibre sections - front and rear bulkheads plus floors/ transmission tunnel sides. Pininfarina completed its design drawings on December 10, 1966. This first prototype was built in Autumn 1967, with a 275-type bulbous nose, but recognisably 365GTB styling from the front wheels back. Two more prototypes were built before the eventual nose styling emerged, but the first cars bold clear strip, plus the wraparound sidelights and indicators didnt appear until quite late in the day. Scaglietti, effectively Ferraris in-house bodyshop, built it. Unusually, given the complex panels which combine sensual curves with knife-edge styling, and details such as the side swages and tail panel lip, Daytonas were all hand-made: skilled labour in Italy in the late 60s and early 70s wasnt very expensive, cheaper than mass-producing the huge body, and no pressing tools were ever made for the Daytona. This complex construction involved folding the intricate curves of the body around a wooden master buck, then welding the panels together on a jig to maintain accuracy, with the result that, although they had the mass-produced look, no two Daytonas were exactly the same. Inevitably, this meant that construction quality was variable, and stitching a big body together from lots of smaller panels meant the cars could later suffer badly from rust - as Ian Fraser, long-time owner of his 365GTB/4 Ghengis, observed when he had his car restored. You pay for that wonderful engine, and they throw the body in for free, he wrote. The engine was a departure from Ferrari norm - although its four-cam layout had been seen on the last 275GTBs made in 1968 and four camshafts were first seen on Ferraris 1.5-litre supercharged V12 racer in 1949. The Tipo 251 engine, an in-house development of the 275s Lampredi V12, was a wet-liner version, with its bore increased to 81mm, stroke was 71mm, meaning 365cc for each of the 12 cylinders and a 4.4-litre capacity - a litre more than the 275. Six twin-choke Webers fed the giant V12 and, although the ribbed sump looked massive, it was dry, being simply the catch pan for the lubrication set-up, with two scavenge and one pressure pump. The rear-mounted transaxle had its own pumped lubrication system. American versions were slightly less potent, having only 8.8:1 compression ratio instead of 9.3:1, and a compromised exhaust system, the primary pipes on each side having to be of unequal length to meet a massive central silencer. The whole drivetrain was mounted to the chassis on four Silentbloc bushes for refinement. The car made its public debut at the Paris Salon in 1968. In the next five and a bit years, near 1400 would be made, including 50 GTS convertibles, as opposed to fewer than 750 275GTB/GTSs.
Although Daytonas could not hope to win the prototype class at Le Mans, the reliability and strength of the brawny V12 made the big GT an exceptional performer in long-distance events such as Daytona, Sebring. . . and Le Mans. After a shaky start at the French circuit, Daytonas were the cars to beat over four years in the GT class, until age and the sheer might of the Porsche force overwhelmed them. Weight always told against the Daytona: the 1971 cars tipped the scales at more than 1.5 tonnes, and the lightest ever at Le Mans was still a porky 1342kg. 1969 Americas Ferrari importer, Luigi Chinetti himself drives a hastily prepared aluminium-bodied car from Maranello, over the Alps to Le Mans for Bob Grossman to drive, but in qualifying he collides with Pedro Rodriguez (not that one!) Dino and neither North American Racing Team car starts the race. 1971 Coco Chinetti, son of Luigi, has the privilege of being the first to drive the NART Daytona on the Le Mans circuit, partnered by Bob Grossman. His GTB/4, chassis 12467, wins its class in the Index of Thermal Efficiency. It would have beaten the Porsches running in the GT category, but had to run in Sport as it was still awaiting homologation which required 500 examples to be built 1972 Using factory-built series 2 racers, now tuned by for 402bhp at 8300rpm, 130kg less weight and wing fences to help aerodynamics, Ferrari teams crush Porsche, putting Daytonas in the first five places in the GT category and fifth to ninth overall: nine Daytonas had started. Andruet and Ballot-Lénas winning Pozzi-France car, numbered 39, is timed at 293kph on the Mulsanne straight, and finishes fifth overall on distance. 1973 Nine Daytonas entered, this time series 3 racers, and four finish: chassis 16363, again entered by Pozzi-France, is the quickest driven by Elford and Ballot-Léna, and wins the GT class and sixth on distance overall. The British-entered JCB-sponsored car, chassis 15681, driven by Neil Corner and Willie Green, and with extra sponsorship from Corgi, goes out in the 18th hour after lying 17th, when the clutch packs up; Green had earlier crashed it into the barriers. This year marks the end of factory support for Daytonas. 1974 Five Daytonas start and four finish: Grandet and Bardinis Tourol-entered Daytona (14407, which had retired the previous year) wins the GTS class, is first in the Index of Thermal Efficiency and first in the 3-5 litres class, with Heinz and Cudinis similar car right behind. Only NARTs car fails to finish, crashed into the barrier at the Esses by Paoli. 1975 Only two Daytonas start after a row with organisers over non-qualification of his 308GT4 Dino causes NART boss Luigi Chinetti to withdraw all his cars including a 72 Daytona. Both the independently entered remaining cars finish, at 24kph slower average than the winning Bell/Ickx Gulf Ford, but the Daytona is getting long in the tooth and is overwhelmed by the field of 15 smaller, lighter Porsche 911/935s. This was the end of the road for the big cars at Le Mans, but Daytonas continued to serve a useful purpose at other venues including the track that gave them their name until one last, glorious, thundering blast to second overall at Daytona in 79, piloted by John Morton and Tony Adamowicz. Their car wore a black bonnet stripe as a mark of respect to team manager Otto Zipper, who collapsed and died just before the race. |
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| Story: Paul Hardiman | Source
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