Ford Escort Mk V RS Cosworth group A (1993)
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Home » Rally Cars » Ford Escort Mk V RS Cosworth
sx1.jpg Development chain
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
Development level
WRC
Group A
Group N

See video


Specifications

7145 units built
92: 2443
93: 1743
94: 1786
95: 1106
96: 67
Engine service manual
See group N preparation manual

Group/Class A/8 Homologation number: A5466
Years active 1993 - 1996 Homologation start: 1/1/1993
Homologation end: 31/12/2000
Engine
Type Cosworth YBT based on Pinto block, straight 4cyl, 4 stroke, petrol engine located front longitudinal, vertical
Capacity 1994.4 cc WRC: x 1.7 = 3390.5 cc
Bore x Stroke (mm) 90.8 x 77.0
Compression ratio 7.5:1
Output power - torgue 310 HP / 6250 rpm 45.9 kgm (450 Nm) / 4500 rpm
50.0 kgm (490 Nm) / 3500 rpm
Main bearings forged steel crankshaft with 5 main bearings 57mm diameter connecting rod distance between centers 128.5mm, big end bearing tunnel diameter 55mm
Materials block: cast iron, 220mm height cylinderhead: cross flow aluminium alloy with hemispherical combustion chambers, 138mm height
Cams/valves 2 overhead camshafts (DOHC), belt driven. Blue camshaft cover 4 valves/cyl. - 16 valves total. 35.25mm inlet valve diameter, 31.25mm exhaust valve diameter. 22.5o angle between inlet valve axis and vertical, 22.5o angle between exhaust valve axis and vertical. 1 coil spring per valve
Aspiration Garrett T35 turbocharger (11 blades high temperature nickel/iron alloy 48.8/58.9mm in/out diameter, 14 blades aluminium compressor 49.05/69.1mm in/out diameter) with air/air intercooler and single nozzle water injection. 38mm turbo restrictor fitted, Ford EEC IV or (1994+) Weber-Marelli IAW P8 multipoint electronic fuel injection.
1995+: 34mm turbo restrictor fitted
pressure: 1.4 - 2.2 bar
Ignition Weber Marelli electronic, firing order 1-3-4-2
Cooling system jacketed watercooled with pump, radiator, fan and thermostat 7.5 lt
Lubricating system wet sump with 1 oil cooler 4.75 lt
Transmission
Type four wheel drive Ford MT75 5 speed or Ford MS92/1 7 speed manual gearbox or 1995+: X-trac 6 speed sequential gearbox
Gearbox ratios constant input: 1.320/1 (33/25)
1st: 3.608/1 (41/15)
2nd: 2.081/1 (41/26)
3rd: 1.363/1 (32/31)
4th: 1.000/1 (-)
5th: 0.828/1 (27/43)
R: 3.256/1 (37/15)
1st: 2.071/1 (29/14)
2nd: 1.529/1 (26/17)
3rd: 1.263/1 (24/19)
4th: 1.047/1 (22/21)
5th: 0.895/1 (17/19)
6th: 0.760/1 (19/25)
7th: 0.653/1 (17/26)
R: 2.143/1 (30/21 x 21/14)
1st: 2.071/1 (29/14)
2nd: 1.529/1 (26/17)
3rd: 1.200/1 (24/20)
4th: 0.955/1 (21/22)
5th: 0.792/1 (19/24)
6th: 0.654/1 (17/26)
7th: 0.536/1 (15/28)
R: 2.143/1 (30/21 x 21/14)
1995+, 1st: 1.800/1 (27/15)
2nd: 1.263/1 (24/19)
3rd: 0.955/1 (21/22)
4th: 0.783/1 (18/23)
5th: 0.667/1 (16/24)
6th: 0.583/1 (14/24)
R: 2.143/1 (30/21 x 21/14)
1997+, 1st: 3.000/1 (36/12)
2nd: 2.125/1 (34/16)
3rd: 1.611/1 (29/18)
4th: 1.316/1 (25/19)
5th: 1.118/1 (19/17)
6th: 0.960/1 (24/25)
R: 2.143/1 (32/14 x 14/12)
Diffrential ratio Transfer box: 1.000/1 (31/31), 1.263/1 (24/19), 1.389/1 (25/18), 1.529/1 (26/17), 1.600/1 (24/15), 1.643/1 (23/14), 1.688/1 (27/16). 1995+: 1.611/1 (29/18)
1997+: 1.200/1 (24/20), 1.150/1 (23/20), 1.100/1 (22/20), 1.056/1 (19/18), 1.045/1 (23/22), 1.000/1 (24/24), 0.957/1 (22/23), 0.962/1 (25/26), 0.952/1 (20/21), 0.909/1 (20/22), 0.900/1 (18/20), 0.857/1 (24/28), 0.850/1 (17/20), 0.815/1 (22/27), 0.800/1 (20/25), 0.778/1 (21/27)
Front/rear: 3.615/1 (47/13), 3.917/1 (47/12), 4.625/1 (37/8), 4.429/1 (37/9), 3.818/1 (42/11), 3.636/1 (40/11), 3.417/1 (41/12), 3.250/1 (39/12)
helical gears input epicyclical center differential with viscous coupling connected to transfer box, with 2 outputs: 1st direct output to hypoid bevel gears, ZF limited slip or Torsen rear differential. 2nd output via hyvo chain in parallel shaft to hypoid bevel gear limited slip front differential. 30%-70% to 50%-50% front/rear torque distribution.
1995+: active hydro/electronically controlled front differential
Clutch dry, double disk 242mm diameter
Chassis-body
Type Steel monocoque chassis of Ford CT120 platform with roll-cage. Front and rear steel cross member subframes with rectangular tubes. 3 door liftback steel bodyshell with steel doors/bonnets, polyurethane bumpers, plastic rear spoiler and adjustable lower front spoiler
Front suspension macpherson strut with lower transverse arms and stabilizer, coil springs and telescopic gas shock absorber
Rear suspension trailing/semi-trailing arm, coil springs, telescopic gas shock absorber and anti-roll bar
Steering system rack and pinion with hydraulic power assistance. 1997+: electric power assistance 2.4 turns lock to lock
Brakes front ventilated disks with 278mm disk diameter and 1 cast iron piston caliper 60mm diameter, or 270-380mm disk diameter and 4/6/8 aluminium piston calipers. Rear ventilated disks with 273mm disk diameter and 1 cast iron piston caliper 42.8mm diameter, or 270-380mm disk diameter and 4/6/8 aluminium piston calipers. Optional Aluminium MMC alloy 6 piston calipers front/rear dual circuit with vacuum servo, adjustable ratio split front to rear. Disc protection shield and stone scraper fitted
Dimensions
length: 4.211 m (165.8") width: 1.742 m (68.6") height: 1.425 m (56.1")
wheelbase: 2.552 m (100.5") front track: 1.490 m (58.7") rear track: 1.505 m (59.3")
Rims - tires gravel 7" - 8" x 16" - 17"
tarmac: 8" - 9" x 17"
Pirelli P Zero 225/45ZR16, or michelin 210/610-18"
Weight 1220 kg
Weight/power 4.1 kg/HP
Fuel tank 70 lt

Results in WRC

Statistics

1993 1994 1995 1996 1997 1998 1999 2000 Total
Works
Races/wins 11/4 9/2 10/1 30/7
Entries/ finishes 23/13 27/15 22/14 72/42 (58.3%)
Others
Races/wins +1/1 +2 11 +4/1 9 10 10 9 56/2
Entries/ finishes 19/9 32/11 58/24 52/25 36/15 22/12 22/8 18/5 259/109 (42.1%)
Total WRC results
Races/wins 12/5 11/2 11 14/2 9 10 10 9 86/9
Entries/ finishes 41/22 59/26 58/24 74/39 36/15 22/12 22/8 18/5 331/151 (45.6%)
Total points 153 151 86 148 9 1 548
(6.372 per race)
(1.656 per entry)

Races

Works team: Ford Motor Co

Season
Entry Rally event
Driver
Codriver
Team M.C SVE POR KEN T.dC GRE ARG N.Z FIN AUS S.R ESP RAC
Miki Biasion
Tiziano Siviero
works 3rd 2nd 7th 1st 2nd acci dent eng ine eng ine 4th
François Delecour
Daniel Grataloup
works 2nd 1st 1st eng ine 2nd 3rd acci dent 1st 4th
Mikael Ericsson
Tina Thörner
works clu tch
Sebastian Lindholm
Timo Hantunen/ Timo Hakala
works eng ine 6th* acci dent
Fernando Peres
Ricardo Caldeira
12
works acci dent
Malcolm Wilson
Bryan Thomas
4565
works acci dent
Malcolm Wilson
Bryan Thomas
Michelin Pilot Team Ford // acci dent 3rd
Robbie Head
Campbell Roy
4565
Michelin Pilot Team Ford acci dent
Carlos Menem, Jr
Victor Zucchini
Mike Little Preparations 5th
Holger Helle
Karsten Richardt
28th
Guy Kridel
Alf Gaspar
dnf
Bernard Béguin
Jean-Paul Chiaroni
6th
Simon Jean-Joseph
Charley Pasquier
head gasket
Brian Stokes
Jeff Judd
wheel bearing
Franco Cunico
Stefano Evangelisti
Ford Italia 1st
Patrick Snijers
Dany Colebunders
Bastos Ford Credit 2nd
Grizzly
'Bull'
13th
Raffaello Fidanza
Gabriella Vasarri
dnf
Jeff Dewitt
Tom Johnston
56th
Penny Mallory
Sue Mee
acci dent
Peter Vassallo
Trevor Alexander
eng ine
Rob Barry
Mike Armistead
dnf
Christopher Rees
Malcolm Heymer
acci dent
Total points
()
153 17 19 19 10 15 9 5 8 19 17 15
Statistics
Works Starts/finishes 23/13 2/2 3/0 3/2 2/2 2/1 1/1 2/1 2/1 2/0 2/2 2/1
Others Starts/finishes// 19/9 2/1 2/1 1/1 1/0 2/1 4/3 7/2

*Ford Team Finland entry


Article from 4T 274, 7/1993

Click here

Article from Auto Express (greece) 283, 2/1991

Click here

Article from 4T 270, 3/1993

Click here

gear.jpg Source
MS92 gearbox gears

Drawings

fordescortrscosworth.jpg Source
fordescortrscoswort1993.jpg Source
ford_escort_rs_cosworth_wrc_1996.jpg Source

Suspension

Source
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