Engine
Group/Class	B/12		Homologation number: B243 (04/01 ET)
Years active	1983 - 1984		Homologation start: 1/5/1983 Homologation end: 31/12/1989
Type	Audi R5T GV/WR, straight 5 cyl, 4 stroke, petrol engine		located front longitudinal with 27.5^o inclination to co-drivers side (LHD)
Capacity	2135 or 2110 cc		WRC: x 1.4 = 2989 or 2954 cc 1988: x 1.7 = 3629.5 or 3587 cc
Bore x Stroke (mm)	79.3 x 86.4 79.51 x 85.0
Compression ratio	6.5:1
Output power - torgue	350 - 370 HP/ 7000 rpm		45.9 kgm (450 Nm) / 3400 rpm
Main bearings	die-forged steel crankshaft with 6 main bearings 54mm diameter, big end journal diameter 46mm		forged steel connecting rod length center to center 136mm, big end bearing tunnel diameter 49mm, aluminium alloy piston
Materials	block: aluminium alloy with GG cast iron cylinder liners, 88mm bore spacing, 220mm deck height		cylinderhead: reverse flow cast aluminium alloy with hemispherical combustion chambers and vertical valves
Cams/valves	1 overhead camshaft (SOHC), belt driven		2 valves/cyl. - 10 valves total. 41.1mm inlet valve diameter, 35.2mm exhaust valve diameter. 0^o angle between inlet valve axis and vertical, 0^o angle between inlet valve axis and vertical
Aspiration	KKK K27 turbocharger (12 blades nickel alloy turbine 64/76.2mm in/out diameter, 14 blades aluminium compressor 60.9/87mm in/out diameter) with air/air intercooler, with Pierburg/Bosch Sport multi point electronic hydraulic fuel injection			pressure:
Ignition	electronic, firing order 1-2-4-5-3
Cooling system	jacketed watercooled with pump, radiator, fan and thermostat
Lubrication system	dry sump with 1 oil cooler			12 lt
Transmission
Type	four wheel drive		5 speed manual gearbox
Gearbox ratios	1st: 3.600/1 (36/10) 2nd: 2.188/1 (35/16) 3rd: 1.360/1 (34/25) 4th: 0.967/1 (29/30) 5th: 0.778/1 (28/36) R: 3.500/1 (42/12)	1st: 3.000/1 (27/9) 2nd: 2.000/1 (24/12) 3rd: 1.500/1 (27/18) 4th: 1.174/1 (27/23) 5th: 0.962/1 (25/26) R: 3.500/1 (42/12)	1st: 3.000/1 (27/9) 2nd: 2.000/1 (24/12) 3rd: 1.500/1 (27/18) 4th: 1.217/1 (28/23) 5th: 1.040/1 (25/24) R: 3.500/1 (42/12)	1984+: 1st: 3.111/1 (28/9) 2nd: 2.273/1 (25/11) 3rd: 1.706/1 (29/17) 4th: 1.318/1 (29/22) 5th: 1.125/1 (27/24) R: 3.500/1 (42/12)
Diffrential ratio	front and rear, 4.285/1 (30/7), 4.375/1 (35/8), 4.571/1 (32/7), 4.857/1 (34/7)		output from gearbox secondary axis to open or locked or limited slip center differential with two outputs, 1st to hypoid spiral bevel gear, open front differential homocentrically through secondary hollow shaft of gearbox, 2nd to hypoid spiral bevel gear, 75% limited slip rear differential
Clutch	Fichtel & Sachs dry, single disk, 240mm diameter
Chassis-body
Type	steel monocoque Typ 85 chassis version of VW B2 platform with roll-cage. Front steel subframe. 2 door coupe steel and polypropylene bodyshell with polypropylene doors, polypropylene front/rear bonnets, polypropylene bumpers and polypropylene rear spoiler. 2 side air inlets in front of each rear wheel and extended wheel arches
Front suspension	mc pherson strut with lower steel/titanium/aluminium wishbone, 1 longitudinal radius arm, coil spring, telescopic gas shock absorber and antiroll bar
Rear suspension	mc pherson strut with lower steel/titanium/aluminium wishbone, 1 longitudinal radius arm, coil spring, telescopic gas shock absorber and antiroll bar
Steering system	rack and pinion with hydraulic power assistance		2.5 turns lock to lock. 22.4/1
Brakes	Front ventilated disks 280mm diameter with 1 cast iron piston caliper 54mm diameter, or 280/295/305mm diameter with 4 aluminium piston calipers 42.5mm diameter. Rear solid disks 245mm diameter with 1 cast iron piston caliper 36mm diameter, or 280/295/305mm diameter with 4 aluminium piston calipers 42.5mm diameter			dual circuit with vacuum servo, standard ratio split front to rear: 60%-40%
Dimensions
length: 4.404 m (173.4")		width: 1.733 + 6% = 1.837 m (72.3")		height: 1.346 m (53.0")
wheelbase: 2.524 m (99.4")		front track: 1.465 m (57.7")		rear track: 1.502 m (59.1")
Rims - tires	speedline light alloy snow or gravel: 6" - 8" x 15", tarmac: 10" - 11" x 15"		Michelin
Weight	1000 - 1100 kg		front-rear: 60% - 40%
Fuel tank	90, 120 lt
Drag coefficient	0.43

	1983	1984	1985	1986	Total
Works
Races /wins	8/3	11/6			19/9
Entries/finishes	24/13	25/19			49/32 (65.3%)
Others
Races			8	5	13
Entries/finishes	6/4	12/4	16/9	8/3	42/20 (47.6%)
*Total WRC results*
Races	8/3	11/6	8	5	32/9
Entries/finishes	30/17	37/23	16/9	8/3	93/52 (55.9%)
Total points	118	186	42	5	351 (10.969 per race) (3.774 per entry)

Entry		Rally event
Driver Codriver	Team	M.C	(SVE)	POR	KEN	TdC	GRE	N.Z	ARG	FIN	S.R	(CdI)	RAC

Hannu Mikkola Arne Hertz	works					acci dent	eng ine	fuel inje ction	1st	1st	fire	2nd	2nd
Michèle Mouton Fabrizia Pons	works					fire	acci dent	eng ine	3rd	16th	7th		acci dent
Stig Blomqvist Björn Cederberg	works						3rd	with drawn	2nd	2nd	acci dent		1st
Shekhar Mehta Yvonne Mehta	works								4th
Bernard Darniche Alain Mahé	works										9th
Luis Di Palma Nestor Straimel	works								acci dent
Lasse Lampi Pentti Kuukkala	works									7th*	with drawn		4th*
Per Eklund Ragnar Spjuth	Sesab Service									4th
John Buffum Neil Wilson	BF Goodrich Motor sport												6th
Darryl Weidner Rob Arthur	Clearlite												fire
Antero Laine Pekka Hokkanen													fire

Total points ()	118						8		34	30	6	9	31
Statistics
Works starts/finishes	24/13					2/0	3/1	3/0	5/4	3/3	5/2	1/1	3/2
Others starts/finishes	6/4									2/2			4/2

Entry		Rally event
Driver Codriver	Team	M.C	(SVE) Entry list	POR	KEN	TdC	GRE	N.Z	ARG	FIN	S.R	(CdI)	RAC

Walter Röhrl Christian Geistdörfer	works	1st		6th		eng ine		igni tion
Hannu Mikkola Arne Hertz	works	3rd		1st	3rd		2nd	3rd	2nd			2nd	2nd
Stig Blomqvist Ilkka Kivimäki	works	2nd	1st	acci dent	eng ine	5th	1st	1st	1st	4th
Michèle Mouton Fabrizia Pons	works		2nd		tur bo
Sarel van der Merwe Franz Boshoff	works			acci dent
Jorge Recalde Jorge del Buono	works								3rd
Luis Di Palma Nestor Straimel									eng ine
Lasse Lampi Pentti Kuukkala	VV Auto		gear box							eng ine
Per Eklund Ragnar Spjuth	Clarion		3rd							6th
Franz Wittmann Peter Diekmann					8th			eng ine
Franz Wurz Gerald Brandstetter					eng ine
Bernard Darniche Alain Mahé	Yacco					acci dent
John Buffum Neil Wilson	BF Goodrich Motor sport						5th						acci dent
Antero Laine Risto Virtanen										drive shaft

Total points (1st)	186	27	27	15	11	6	25	18	27	12		9	9
Statistics
Works starts/finishes	25/19	3/3	2/2	4/2	3/1	2/1	2/2	3/2	3/3	1/1		1/1	1/1
Others starts/finishes	12/4		2/1		2/1	1/0	1/1	1/0	1/0	3/1			1/0

Entry		Rally event
Driver Codriver	Team	M.C	SVE Entry list	POR	KEN	TdC	GRE	N.Z	ARG	FIN	S.R	(CdI)	RAC

Per Eklund Ragnar Spjuth	Clarion		5th							6th			4th
Lasse Lampi Pentti Kuukkala			with drawn							head gasket
David Llewellin Phil Short			acci dent
Werner Grissmann Jörg Pattermann				5th			dnf				8th
Malcolm Stewart Doug Parkhill								5th
Wilfried Wiedner Franz Zehetner									2nd
Kari Sohlberg Matti Jääsalo										13th
Matti Rastas Matti Rekonen										20th
Tomi Palmqvist Juha Saarinen										head gasket
Jari Niemi Jaakko Markkula										dnf
Jari Mäenpää Arto Laurila										dnf

Total points ()	42		6	6				6	9	5	3		7
Statistics
Others starts/finishes	16/9		3/1	1/1			1/0	1/1	1/1	7/3	1/1		1/1

Racing Cars

Specifications

Results in WRC

Statistics

Races

Drawings

KKK K27 turbocharger

Transmission