Theo's: Evolution 928

Worldwide production numbers (from WikiPedia)

All production numbers are approximates collected from several sources. Porsche hasn't published actual numbers.

Model	Model years	Numbers made
928 ⁽¹	1978-82	17669
928 S ⁽²	1980-83	8315
928 S/S2	1984-86	14347
928 S3	1986 1/2	3,750
928 S4 ⁽³	1987-91	16213
928 CS ⁽⁴	1988-89½	19
928 SE	1988	42
928 GT ⁽⁵	1989½-91	1620
928 GTS	1992-95	2831
Total	1978-95	61056

---------------------------------------------------------------
^{1) Count contains unknown number of US "Competition
Package" models made in 1981 and 1982 model years and 205 US
"Weissach edition" models made in 1982 model year.}
^{2) Count contains 140 ROW "50th Jubilee" models made in
1982 model year.}
^{3) Count contains 6 Club Sport prototypes made in 1987
model year.}
^{4) 10 ROW and 2 US models made in 1988 model year, 7
ROW in early 1989 model year. Last Club Sport was made in
early winter 1988/89.}
^{5) GT production started in around February 1989.}

Code:
MY Model Market Smallest VIN Largest VIN Qty Total

MY	Model	Market	Smallest VIN	Largest VIN	Qty	Total
92	928 GTS	ROW	WP0ZZZ92ZNS800061	801015	955	955
93.E	928 GTS	USA+CAN	WP0AA292_PS815061	815148	88
93	928 GTS	ROW	WP0ZZZ92ZPS800061	800681	621
93.L	928 GTS	USA+CAN	WP0AA292_PS820061	820162	102	811
94.E	928 GTS	USA+CAN	WP0AA292_RS820061	820079	19
94	928 GTS	ROW	WP0ZZZ92ZRS800061	800583	523
94.L	928 GTS	USA+CAN	WP0AA292_RS820080	820199	120	662
95	928 GTS	ROW	WP0ZZZ92ZSS800061	800459	399
95	928 GTS	USA+CAN	WP0AA292_SS820061	820137	77	476
						2904

And one more overview: 928production.xls VIN: VIN numbers overview.xls

Year	Type	Information	Photo	Modifications
1978	Porsche 928 4.5L / 219Hp / 16v	1978 Porsche 928		1 RR fog lamp in bumper Checkered seats ( Pasha) 7x16 cast telephone wheels Separate battery box Centre dash vent with fine grills and knob Hazard switch and seat belt warning on console Rear wiper control knob on binnacle Vacuum controlled A/C and central locking Central informer on console Horizontal type instruments K Jetronic injection (CIS) Single piston brakes 282/289 mm 3 speed Auto transmission or 5 speed manual
1979	Porsche 928 4.5L / 219Hp / 16v	1979 Porsche 928		"Basic equipment model" – no detergent washing Headlamp washers Cruise control Heavy seat bolstering Rear blind, auto air conditioning etc. Vertical reading ( current model) instruments including central informer Integral battery box Dash vent-heavy grilles and knob deleted
1980	Porsche 928 4.5L / 230Hp / 16v	none		Electrical central locking and A/C system Door protector strips optional Red door safety light 7x15 inch wheels and 215 tires High compression engines Relocation of some switches to binnacle And console ( rear wiper, trip reset)
1980	Porsche 928s 4.7L / 230Hp / 16v	1980 Porsche 928 S		Front and rear spoilers Forged 16 inch wheels Heavy bolstered seats Twin exhaust system Front floating ( first) calipers and larger directional slotted discs Air ducting to front brakes Auto A/C Detergent wash Headlamp washers Leather dash
1981	Porsche 928s 4.7L / 234Hp / 16v	1981 Porsche 928 S		Front and rear spoilers Forged 16 inch wheels Heavy bolstered seats Twin exhaust system Front floating ( first) calipers and larger directional slotted discs Air ducting to front brakes Auto A/C Detergent wash Headlamp washers Leather dash
1983	Porsche 928s US 4.7L / 234 Hp / 16v	1983 Porsche 928 S		928 Deleted Colored instrument binnacle 4 spoke 928S steering wheel Side protectors standard Cast wheels standard – optional forged Hydraulic belt tensioner Hydraulic engine mounts Engine mounted starter on cast iron bracket Round tooth cam belts and gears
1983	928s ROW 4.7L / 310 Hp / 16v	none		928 Deleted Colored instrument binnacle 4 spoke 928S steering wheel Side protectors standard Cast wheels standard – optional forged Hydraulic belt tensioner Hydraulic engine mounts Engine mounted starter on cast iron bracket Round tooth cam belts and gears
1984	Porsche 928s US 4.7L / 234 Hp / 16v	none		Electrically heated washer jets 4 speed auto transmission with front separate oil cooler LH EZK ignition/injection Adjustable front heights ABS optional Parcel tray under steering wheel Modified central informer Electric hatch release Windows operating with doors open Central locking from console buttons Twin distributors Fuel cooler
1984	Porsche 928s ROW 4.7L / 310 Hp / 16v	none		Electrically heated washer jets 4 speed auto transmission with front separate oil cooler LH EZK ignition/injection Adjustable front heights ABS optional Parcel tray under steering wheel Modified central informer Electric hatch release Windows operating with doors open Central locking from console buttons Twin distributors Fuel cooler
1985	Porsche 928s US 4.7L / 234 Hp / 16v	none		"Slim line" longer and lower seats with 4 way switches Automatic gear indicator in tacho Optional rear A/C 4 Spoke steering wheel with Porsche embossed Plastic front wheel arch guard Borg Warner type synchro in manual transmission with shorter lighter gear shift 115 amp alternator Dust trap air intakes Fan ventilation of hot stationary engine – switch on no. 2 intake tooth belt tension light Modified CEL – wiring plugs New generation wiring diagrams
1985	Porsche 928s ROW 4.7L / 310 Hp / 16v	none		"Slim line" longer and lower seats with 4 way switches Automatic gear indicator in tacho Optional rear A/C 4 Spoke steering wheel with Porsche embossed Plastic front wheel arch guard Borg Warner type synchro in manual transmission with shorter lighter gear shift 115 amp alternator Dust trap air intakes Fan ventilation of hot stationary engine – switch on no. 2 intake tooth belt tension light Modified CEL – wiring plugs New generation wiring diagrams
1984-1986	Porsche 928s2 4.7L / 310Hp / 16v	none		Euro version (UK market only?) Equipped with LH2.2 and EZK computers S4 brakes S4 front suspension better seats Modified exhaust Interior light delay
1986	Porsche 928s3 5L / 288Hp / 32v	1986 Porsche 928 S3		4 Valve quad cam engine Revised intake manifold Distributors on end of camshafts Unleaded low octane engine with secondary air injection ABS standard Cruise control standard 4 piston brake calipers Silver forged wheels
1987	Porsche 928s4 5L / 316Hp / 32v	1987 Porsche 928 S4		New look modern rounded body front and rear Separate hinged rear spoiler Deletion of front spoiler – underbody trays fitted to bring about ground effects cooling flaps for radiator Twin electric fans Revised "high-rise" induction manifold with resonance flap (flappy) Knock control no adjustment of idle speed or CO Single plate clutches Larger front brake calipers Asbestos free pads 7 & 8 inch wheels 245 rear tires Intensive washer, reservoir in plenum chambers, seat and mirror memory
1988	Porsche 928s4 5L / 316Hp / 32v	1988 Porsche 928 S4		Fixed rear spoiler Seat memory standard Injection/ignition available with flash code diagnosis and fault memory
1989	Porsche 928s4 5L / 316Hp / 32v	1989 Porsche 928 s4		Revised (stronger) heads installed mid MY 1989 Flashing snib alarm Computerized instruments including dash diagnosis and additional stalks Roof aerial Solenoid type central locking Tire pressure control system Bosch Hammer diagnosis Diagnosis ignition circuit monitor
1988 1989	Porsche 928CS - SE 5L / 316Hp / 32v	1989 Porsche 928 Club Sport and Sport Equipment		Weight reduction Close ratio manual gearbox only Modified camshafts, increased top-end torque Modified exhaust: single tailpipe Rev limiter up to 6775 instead of 6600 rpm) Limited Slip Differential 2.73:1 instead of 2.63:1 Sport suspension Rear axle 17mm spacers GT style alloy wheels forged from modified flat disks 8" + 9" Rims are not painted but anodized 42 SE units produced for the UK market 1988/1989 10 CS units produced for rest of the world 1988/1989
1989	Porsche 928gt 5L / 330Hp / 32v	1989 Porsche 928 gt		Revised (stronger) heads installed mid MY 1989 Revised camshafts Club sport 8x16 and 9x16 inch forged 928CS wheels up to 07/89, later cast model Rear wheel spacers LSD standard Twin tail pipes GT rear badge Modifications to LH and EZK controls RPM increased from 6600 to 6800 rpm, peak at 6200 and not 6000rpm 1mm higher camshaft lift different front springs different rear muffler with two outlets limited slip standard (ZF type code "220", PSD "221" starts in '90) fender lips "cringed" from factory (folded under)
1990	Porsche 928s4 5L / 316Hp / 32v	1990 Porsche 928 S4		Electrically adjusted headlamps Trip reset and intensive cleaning buttons on front binnacle face PSD ( electronic controlled LSD) standard Twin pipe muffler ( same exhaust as GT) Separate engine oil cooler under radiator Trans cooler top Window switch one touch control Analog clock Single piece defroster vent New central electric system (CEL) Higher ratio pulley on Alternator Same heads, pistons and intake as GT Airbags un US/CDN models standard Water pump impeller is now plastic Extra oil cooler below radiator RDK standard
1990	Porsche 928gt 5L / 326Hp / 32v	1990 Porsche 928 gt		Standard cast "design 90" 7.5 and 9 inch rims PSD differential, which is a computer controlled electro-hydraulically activated LSD Different vibration damper "GT" on the crank Thermo couplers relocated from cyl 4->3 and 8->7 Gold plated knock sensor to avoid corrosion
1991	Porsche 928s4 5L / 316Hp / 32v	none		Flash code alarm snib Recirculation A/C control position Leather clad hand brake lever Rear wheel arch full covers 3 dba quieter Deletion speedo reed contacts, now on ABS sensors High output power steering pump 100bar Deletion of radiator flaps Wheels 7.5 x 8 16" with spacers All models are equipped with PSD New Alarm systems Modifications to the electrical system Deletion of the pressure relief valve in the oil cooler Modified version LH computer (check-engine light) In Feb Airbags became standard on all models
1991	Porsche 928gt 5L / 326Hp / 32v	1991 Porsche 928 gt		same changes as in S4 version, except: Shorter Shift lever Changes in the clutch slave cylinder
1992	Porsche 928gts 5.4L / 350Hp / 32v	1992 Porsche 928 gts		Broad stance flared rear wheel arches Rear full width reflector Painted rear spoiler 17" wheels cup design 7.5 x 9 Delete S4 & GT designation Stronger gearbox Rear wheel spacers Larger 322mm discs front Turbo style (tear drop) mirrors Blaupunkt Symphony radio Deletion of hatch release function on pass.side
1993	Porsche 928gts 5.4L / 350Hp / 32v	none		Reinforced pistons and rings Factory Shell Synthetic 5w40 oil Various modifications in the engine venting Clutch operation, release bearing bushing Clutch disk with modified Friction Lining Changes caster setting policy (all models) to 4 +/-1 New brake fluid dot4 type 200 Rear lid lock can not be unlocked from passenger side
1994	Porsche 928gts 5.4L / 350Hp / 32v	none		Installation of a particle filter in airflow Deletion of the Tire Pressure monitoring system Different security lock wheel fitting Cup '93 17"wheels 225/45zr17 and 255/40zr17 Dynamic kick-down gearbox feature Radio Alpine 7807 Different color scheme
1995	Porsche 928gts 5.4L / 350Hp / 32v	1995 Porsche 928 gts		Key lock Blaupunkt London radio / CD R134a A/C gas

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