DAWN OF THE COSWORTH DFV ERA
– four valves, at a narrow included angle
( 40 degrees), and a flat-topped piston
within a pent roof, rather than
hemispherical combustion chamber –
before turning his attention to F1.
Hayes jets to Detroit to have the F2/F1
project rubber-stamped. He meets no
resistance within the operating policy
committee. Henry Ford II, more concerned
with beating Ferrari at the 24 Hours of
Le Mans – a much more expensive
endeavour than the $320,000 Hayes is
requesting – merely wishes him good luck.
Meanwhile, Maurice Phillippe joins
Team Lotus as chief designer from Ford
Motor Company. An ex-de Havilland
aerospace engineer, his self-built,
stressed-skin monocoque racer had
caught Chapman’s eye as long ago as the
mid-1950s. (In a neat piece of symmetry,
Phillippe will design Tyrrell’s 011.)
The Ford-Cosworth deal leaks to the media.
FVA generates 208hp at 9,000rpm on a
dynamometer. An experimental 1.5-liter
FVB version – in simplistic terms, half the
proposed F1 engine – will be tested and
raced during the summer in the back of
a Formula 2 Brabham BT10 driven by
Duckworth’s business partner and
Cosworth co-founder, Mike Costin.
Having proved the basics with the FVB –
the overall structure, the valves and their
arrangement, the firing order and its
timing – Duckworth settles down to seven
months of concentrated effort on his first
clean-sheet design: the Double Four Valve
(DFV) F1 engine. Holed up at his home
with slide rule and log tables, protractor
and set squares, he works 16 hours a day
and exists on a diet of steak and cabbage.
He drops 40lb.
Tuesday, March 1
Cosworth receives its first instalment from
Ford: £ 25,000 to cover FVA’s costs.
Thanks to the iconic
Lotus Cortina, Colin
Chapman and Ford
were already firm
the Cosworth DFV.
twin-cam version of the
Ford Kent engine for
racing, but also for his
Lotus road cars, Ford
PR guru Walter Hayes
got wind of it and
arranged for Lotus to
fit the 1,557cc, 105hp
straight-four into Mk1
along with several other
Launched in early
1963, the Lotus
Cortina’s rally and
race exploits (BELOW,
Jim Clark heads to a
class win in the ’ 64
British Saloon Car
at Silverstone) gave it
instant legend status.
in 1966, and with only
3,300 rolling off the
production line, the
Lotus Cortina remains
a sought-after classic.
(LEFT) Spring 1967: Keith Duckworth and
Mike Costin, with key Cosworth personnel
Bill Brown and Ben Rood, prepare to dyno
test the prototype DFV. (BELOW) Jim Clark
endures the ’ 67 Monaco GP in his 2-liter
Climax-powered Lotus 33. Meanwhile, Ford-
financed Cosworth FVA ruled F2 in ’ 67.
Clark (BOTTOM, at Reims) was a frequent
F2 visitor in his FVA-powered Lotus 48.
COUNTING DOWN TO THE DFV
twin-cam for the 1600cc Formula 2 rules
scheduled for 1967. Based on Ford’s
Cortina 116E five-bearing iron block,
the Four Valves, Series A (FVA) features
Duckworth’s first original cylinder head.
He hopes to prove his gas flow theories