1989 Audi 90 Rally car

AUDI 90 QUATTROForest Specification

Car:
-registration MN 90 44

-history Built new by GBM Rallye-Sport(AudiSport) in January 1989 from all new parts to full Group A Audi Sport specification.
Used in 1989 British Rally Championship by Andrew Wood, sponsored by Castrol/Wagon Finance with four top-ten finishes. Used in 1990 by Jim McRae, sponsored by Shell/Gemini, won Granite City, numerous top ten finishes. Used 1990-91 by Bob Locke for some Scottish Championship events including 2nd at Galloway Hills and Scotphone. Used by Chris Wagner to finish second in Scottish Championship series 1992. Exported 1999 to USA, used 1999-2001 in selected events by Alex Erisoty to win SCCA ProRally Rookie of The Year and tie in points for Northeast Division Open Championship. Numerous top-ten finishes.

Body:
-construction Shell (No B3/2) prepared by Matter (W. Germany), seam welded galvanised steel 4 door- saloon with integral Chrome/Molybdenum safety cage to full Audi Sport specification. Wheelbase lengthened (approx 100mm) to permit use of 16² wheels and to improve stability. Aluminum inner door frames and panels. Lightweight front screen, heated rear screen. Kevlar front and rear underbody guards. Quick lift jacking points (4) in sills.

-subframes competition strengthened subframes with eccentric spacers for adjustment of driveshaft angles and wheelbase.
-kerb weight 1130kg
-dimensions 4394mm long x 1704mm wide x 2537mm wheelbase.

Engine:
-type Full Group A, 5 cylinder in-line, iron block, Audi Sport S1 20v alloy head. Built by Motorentechnik Kolb of Ingolstadt (Audi Sport). 3 point magnesium- aluminium competition mounts to chassis. Water cooling by aluminium radiator with 700 W 2-speed motor mounted in Kevlar shroud. Twin, switchable, Bosch competition fuel pumps on quick release, self sealing couplings to system. Large bore, quick-release, competition exhaust system. Latest specification Year 2001 (Formula 2) Kolb pistons. 325 BHP.

-capacity 2.5L (2479cc), 82.5mm bore x 92.8mm stroke
-max. rpm 8200
-compression ratio 14 : 1
-induction Bosch Motronic electronic fuel injection
-reciprocating assembly Audi Sport billet stroker crank(92.8mm)-knife edged. Audi Sport polished steel connecting rods, Audi Sport (Kolb-F2) 14:1 pistons
-valvetrain Audi Sport Group A valves, springs, lifters
-camshafts 2 ohc by Audi Sport (Kolb), individually adjustable gear drive
-lubrication Finned alloy wet sump with trap door baffles and fabricated steel windage tray. Engine breather separator/catch tank. Oil cooled by Setrab aluminium cooler.
-exhaust Sport Quattro stainless headers to quick-release 7.5cm heavy wall tubing w/silencer

Transmission:
-drivePermanent four wheel drive, 50/50 fixed torque split with no centre differential.
-gearbox Competition long rally box incorporating plate type limited slip(80%) front differential. Light alloy mounting.
-gears 6 forward gears (3.500/2.273/1.706/1.318/1.040/0.889) reverse (3.500) Rose jointed, competition gear linkage with electric clutch button.
-rear differential Light alloy, competition unit with plate type limited slip(80%) differential and integral competition mounting.
-final drive ratio 4.86
-clutch Sachs (S1) twin plate. Electric operation option.
-driveshafts Competition heavy-duty (S1) shafts, adjustable for plunge. Kevlar driveshaft guards.

Steering:
-rack Competition ZF long (Sport S1) unit, 13.4:1 ratio with power hydraulic assistance. Aluminium off side mounting.
-steering column Group A (as GpA Audi 200) column, fitted with Personal Grinta¹ leather/alloy steering wheel, 1.75 turns lock to lock.
-power assistance Audi Sport competition high capacity pump fitted with alloy deep-v drive pulley. Tensioner. Baffled and filtered reservoir, and aluminium Setrab fluid cooler, full Aeroquip lines (entire car Aeroquip).
-steering arms Competition arms front and rear, all rose jointed to adjusted for toe-in/out.

Suspension:
-front/rear Magnesium alloy (Sport S1) McPherson struts with Boge inserts(V70/H69 settings), S1 competition top mounts, adjustable ride height and castor. Tubular competition wishbones, fully rosejointed and adjustable for camber.

Brakes:
-type Front/rear 295mm vented discs with light alloy 4-pot AP racing calipers. Dashboard brake bias front/rear adjustment via competition aluminium die-cast pedal box and twin master cylinders to dual circuit hydraulic system. Steel brake guards. Full Aeroquip lines.
-pads Mintex M171
-handbrake Fly-off competition magnesium/alloy handbrake, operating rear brakes with hydraulic assistance.

Running gear:
-wheels Magnesium alloy OZ racing 7¹x15¹, 5-stud fixing, with titanium wheel nuts. Spares (one or two) mounted in boot with quick-release belt fixing.
-tyres Pirelli ASG 195/65x15 K60 (soft) compound.

Electrical:
-wiring loom Aerospace specification, lightweight fireproof PTFE cable. Dashboard fuse panel with Glow fuses¹. Quick release control and instrument panels.
-generator 150A alternator
-battery Heavy duty dry(gel) cell with quick-release Anderson¹ connector.
-instruments Speedometer, Stack¹ non-linear tacho with computer readout and interface, oil temperature/pressure, water temperature, fuel system/control pressure, voltmeter, fuel contents.
-ancillaries Halda Rally Computer with foot operated remote zero, 2 x map lights, radio/Poti connections, roof aerial, foot operated air horns.
-lighting Aluminium auxiliary lamp bar for 4/6 lamps. PIAA or Cibie Turini (carbon fibre) lamps; 2 x spots, 2 x drive, 2 x virage (cornering). Quick release military specification multi plugs (gold contacts).


Equipment:
-safety Lifeline, aluminium, plumbed-in electric fire extinguisher system (2.5kg+5kg). 2 x 2.5kg hand held extinguishers. Sabelt 6-point (with crotch strap) aircraft buckle full harness seat belts. Rubber bladder, foam filled, 70L fuel cell in aluminium housing with quick release, auto sealing connectors.
-interior Collins Kevlar seats on adjustable aluminium brackets. Bilstein quick lift jack. Wheel brace. Foam helmet box. First aid kit. Emergency warning triangles. Tow rope. Tool kit in roll.