Ford Escort Mk I Twin Cam group 2 (1968)
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Home » Rally Cars » Ford Escort Mk I Twin Cam
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1968: Ford Escort Mk I Twin Cam
1970: Ford Escort Mk I RS1600
1975: Ford Escort Mk II RS2000
1983: Ford Escort Mk III RS1600i
1985: Ford Escort Mk III RS Turbo
1992: Ford Escort Mk V RS2000
1993: Ford Escort Mk V RS Cosworth
1996: Ford Escort Mk VI RS2000

Specifications

1263 units built
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Click here and here for street version

Group/Class 2 Homologation number: 1524
Years active 1968-1970 Homologation start: 1/3/1968
Homologation end: 1/1/1977
Engine
Type Ford Lotus Twin Cam, 116E block, straight 4cyl, 4 stroke, petrol engine located front longitudinally
Capacity 1558 cc WRC: 1558 cc
Bore x Stroke (mm) 82.55 x 72.75
Compression ratio 9.8:1
Output power - torgue 115 HP @ 6000 rpm
140 HP @ 6800 rpm
155 Nm @ 4500 rpm
106 lbf @ 5000 rpm
Main bearings 5 with 54mm bearings diameter, 6 bolt flywheel mount connecting rod length between centers 121.9mm, big end type bearing diameter 49.2mm, aluminium alloy piston with 39.5 mm piston height
Materials block: Ford Kent grey cast iron thin wall block (casting 681F-6015G or 701M-6015-EA). 198.2 mm deck height, with 4mm cylinder wall thickness cylinderhead: cross flow aluminium alloy with hemispherical combustion chambers
Cams/valves 2 overhead camshafts (DOHC), chain driven 2 valves/cyl. - 16 valves total, 39mm inlet valve diameter, 33.7mm exhaust valve diameter, 2 coil springs per valve
Aspiration natural, 2 x Weber 40 DCOE carburetors with AC mechanical fuel pump
Ignition Lucas or Luminition electronic, firing order 1-3-4-2 Battery: 12 volt 38 Ah, Lucas C40/1 22-amp d.c. generator
Cooling system jacketed watercooled with pump, radiator, 280 mm diameter-2 blades fan and thermostat 5.8 lt
Lubrication system wet sump, 1970: dry sump 4.6 lt
Transmission
Type rear wheel drive 4 or 5 (ZF) speed manual gearbox
Gearbox ratios constant: 1.579/1 (30/19)
1st: 2.97/1 (32/17)
2nd: 2.01/1 (28/22)
3rd: 1.39/1 (23/22)
4th: 1.000/1 (-)
R: 3.324/1 (40/19 x 19/22)
constant: 1.471/1 (28/21)
1st: 2.296/1 (31/18)
2nd: 1.697/1 (28/22)
3rd: 1.28/1 (24/25)
4th: 1.000/1 (-)
R: 2.807/1 (40/19 x 19/22)
constant: 1.333/1 (25/17)
1st: 2.84/1 (29/15) or
1st: 3.048/1 (29/14)
2nd: 1.78/1 (23/19)
3rd: 1.47/1 (21/21)
4th: 1.21/1 (19/26)
5th: 1.000/1 (-)
R: 1.74/1 (25/17 x 13/15 x 30/22) or
R: 2.145/1 (25/17 x 13/15 x 30/15)
Diffrential ratio 3.71/1 (34/9), 4.44/1 (40/9), 4.1/1 (33/8), 4.7/1 (33/7), 4.9/1 (34/7), 5.3/1 (37/7), 5.5/1 (39/7), 5.7/1 (34/6), 6.1/1 (37/6), 3.7/1 (37/10), 4.63/1 (37/8), 5.14/1 (36/7), 5.83/1 (35/6), 3.89/1 (35/9), 4.0/1 (36/9), 4.11/1 (37/9), 4.37/1 (35/8) hypoid spiral bevel gears limited slip rear differential
Clutch Borg and Beck dry single plate, 203 mm diameter, 1970: dry dual plate 184 mm diameter
Chassis-body
Type steel monocoque chassis with roll-cage. 2 door saloon steel bodyshell with steel bumpers, and extended wheel arches all around
Front suspension Macpherson strut with 1 lower transverse arm and stabilizer, multi leaf semi-elliptic springs and telescopic shock absorbers
Rear suspension live axle with 4 locating longitudinal links, Panhard rod, single or multiple leaf springs and telescopic gas shock absorbers
Steering system rack and pinion 2.7 turns lock to lock
Brakes front Girling solid disks 244mm diameter and 2 piston calipers 54 mm diameter, 1970: 254 mm disc diameter. Rear drums 229mm diameter with 1 double piston caliper 19 mm diameter, 1971: 22.8 mm piston caliper diameter dual circuit with Girling vacuum servo
Dimensions
length: 3.978 m (156.6") width: 1.608 m (63.0") height: 1.320 m (52.0")
wheelbase: 2.430 m (96.0") front track: 1314.5 m (51.75") rear track: 1333.5 m (52.5")
Rims - tires 5.5 - 6 - 7J x 13"
Weight 750 kg
Fuel tank 41 or 90 lt
Drag coefficient 0.45

Results in WRC

Races

Works team: Ford Motor Co

Season
Entry Rally event
Driver
Codriver
Team M.C SVE
Entry list
S.R KEN A GRE RAC
Entry list
Roger Clark
Jim Porter
works 5th
Timo Mäkinen
Henry Liddon
works 7th eng ine tran smis sion
Hannu Mikkola
Gunnar Palm
works gear box oil pres sure tran smis sion
Ove Andersson
Elizabeth Andersson/ Jim Porter
works oil pres sure ther mos tat 3rd
Jean-François Piot
Jean Todt
Ford France diffe rential 3rd 4th
Hodson
Alen
dnf
Ingemar Frohm
Bo Ottosson
8th
Chris Sclater
Peter Valentine
OTL
Bert Gustavsson
Lars Mattsson
dnf
Per Sandager
Otto Kristensen
dnf
Gert Jönsson
Jan Svensson
dnf
Sten Bergström
Kent Böe
dnf
Leif Asserwall
Jan-Åke Siljeström
dnf
Adrian Boyd
Beatie Crawford
4th
Franz Wurz
Walter Zögl
7th
Robert Zelenka
Richard Zelenka
8th
Titus Maier-Kaibic
Kurt Jauk
OAMTC dnf
Brian Culcheth
Johnstone Syer
8th
Tony Fowkes
Peter O'Gorman
15th
Nigel Rockey
Ron Channon
16th
Chris Beynon
Lyn Andrews
17th
Paul Appleby
David Shields
18th
Paul Faulkner
Michael Peters
23rd
John Peniston
Melvyn Long
30th
George Beever
Tony Mason
33rd
Robert Bennett
Stuart Harrold
44th
Colin Barrell
Brian Rann
47th
Ian White
Richard Hitchens
50th
Peter Callow
Peter Bradford
52nd
David Bell
Michael Giles
54th
Geoffrey Thomas
David Jenkins
59th
Mike Bailey
Joe Minto
66th
Jim Bullough
Don Barrow
acci dent
Miss Bronwyn Burrell
Rob Morgan
dnf
Mike Hibbert
Derek Tucker
dnf
Robert Bean
Paul Stephens
dnf
Ingemar Frohm
Torsten Palm
dnf
Jeffrey Churchill
John Thomas
dnf
Frank Pierson
Raymond Evans
dnf
John Rhodes
Frank Webber
dnf
John Heppenstall
Hywel Thomas
dnf
John Booth
Graham Booth
dnf
Thomas Williams
Stuart Watts
dnf
Tom Burke
Dan O'Sullivan
dnf
James Jones
David Williams
dnf
Roger Clifft
Neil Wilson
dnf
Roger Drummond Walker
Maxwell Kingsland
dnf
Michael Dolan
James O'Brian
dnf
Wilfred Jones
John Gittins
dnf
Trevor Shaw
Fredrick Humphrey
dnf
Paul Kerridge
William Barlow
dnf
William Webber
Alan Whitman
dnf
Charles Drewitt
David Evans
dnf
William Crawford
George Dean
dnf
Melvyn Lonsdale
David Otridge
dnf
John Simpson
Anthony Newsum
dnf
Andrew Frost
Robert Binns
dnf
James Hannah
Alex Little
dnf
Desmond Fitzgerald
Richard O'Brien
dnf
Michael Jackson
Christopher Cammack
dnf
Ronald Harrison
Robert Davis
dnf
Mallcolm Wise
Douglas Blair
dnf
David Warren
Edward Norman
dnf
Erik Nosek
Ronald Boughen
dnf
William Coleman dnf
Total points
()
53 10 3 22 15 3
Statistics
Others starts/finishes 73/23 5/2 10/1 6/4 2/2 50/14

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Drawings

ford_escort_mk_i_twin_cam_1968-55215.jpg Source
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