Porsche 928 Model Guide - Detailed information on variations and features by model year
These are the oldest pages in 928.org.uk. Showing participants cars for almost all model year variations. More up to date owner information and pictures are in the 928 locator
1979 Porsche 928, Petrol Blue, Pascha Cloth Blueflame exhaust; Contributor: Peter Watts, (One of the 928.org.uk Founder meeting attendees)
1980 Porsche 928 S Silver; Contributor: Simon Hamnett
1981 Porsche 928 S Anniversary; Contributor: Marton Hasenberg
1984 Porsche 928 S2, Silver/Black; Contributor: Paul Coyne; Registration B62 RLP
1985 Porsche 928 S2, Auto, Iris Blue; Contributor:Steve Saunders
1985 928 S2 Manual Owner: Alan Whiting; Previous owners: 3, including William Woollard of Top Gear fame Mileage: 149,000 miles
1986 928 S4, Grand Prix White
Contributor: Peter Martin
1986 Porsche 928 S2 Auto, Red
Contributor: Richard Tatnall
1986 Porsche 928 S2, Prussian Blue, Blue & Linen
Contributor: John speake
How I came to own a 928
I have liked V8 engined cars for many years, and had owned two SD1 Rovers with the 3.5 litre engine. The time came to replace my heavily modified Opel Manta, which I had for 9 years. I wanted a fast sports car, my wife wanted a smooth grand tourer. I reasoned to myself if the car was fast but smooth, she wouldn’t notice I was driving fast !
(I also have owned a v-twin Vincent motorcycle, and a v-twin JAP engined 3 wheeler Morgan)
Jaguar saloons were briefly considered, but poor build quality was a turn off. By chance I bought the "Automobilia" book on the 928GTS, which gave a brief history of the previous 928 models.
Further investigation showed that there were 928’s in my price range (about £10k) but running costs would be high. I reasoned that with a car of the age I could afford, main dealer service stamps were not so important, and I could tackle the routine servicing. My annual mileage would be typically about 6k miles, so running costs would be reasonable.
So much for the theory, how about finding the right car ? A friend of a friend had sourced cars from Exchange and Mart, so I bought a copy for a few weeks to see what was available. The first impression was that the cars were reasonably priced. But after a while it was obvious that these were also the less desirable cars, as they relentlessly appeared week after week.
Eventually I saw a car in the Sunday Times that was in my price range ! Only problem, it was in Blackpool, I was in Cambridge. However, the purchaser sounded genuine and the car the right colour. Found Chris Sanderson advertising pre-purchase inspections in Exchange and Mart, from his STD code found he was in south Lancashire. He made a prompt, and efficient report, also giving his opinion of its value. What he found were minor problems - "a very nice car". I didn’t appreciate at that time how lucky I was !
The usual HPI checks were made on the present private plate and also the previous identity. All was well, so on the fateful day I hired a taxi to Blackpool. I wasn’t disappointed when I saw the car.
Having never driven a 928 before or read the driver’s manual, the return journey down the M6 was "interesting". Had great fun exploring kick down, and seeing everything vanish from the rear view mirror. The inevitable hold ups near Birmgham gave an opportunity to explore the moveable steering column and instrument binnacle, optimise the settings of the electric seat, and fiddle with the aircon controls. It seemed a very short journey !
The rear tyres lasted 10k miles. At the time of writing the one major cost has been a new water pump and cambelt. My main problem is getting a reliable reasonably priced garage within reasonable reach to undertake the jobs beyond my capabilities or facilities. It’s a brilliant car, and I intend to keep it as long as possible. It has 92k on the clock, so should be good for a few years yet !
1986 Porsche 928 S4 Auto
Contributor: Jeremy Napier
1987 928 S4 Auto, Slate Grey, Linen
Contributor: Martin Dunks
1987 Prototype Porsche 928 club sport
Contributor: Derek Bell
Derek Bell was given this 928 by Porsche AG, he was and still is, one of their racing drivers.
Derek does not know alot about the car. He was apparently reluctant to take the car because it was LHD and in fact initially refused it. Approximately a year later he asked about a white 928 sitting under a tree to be told "oh that's your 928". He then accepted the car and brought it back and registered the car in the UK. It had covered approx 20,000 miles - although Derek had a new "mph" speedo installed.
Derek knows it was one of 4 unique 928's built. All 4 were given to Porsche racing drivers. All 4 were white and LHD. The car is a 1987 model year prototype S4. This is identified by the VIN number and the folding rear spoiler (which was only fitted to 1987 model year S4's). He was told the car had uprated suspension and engine. The car was also lightened.
Derek knows that one of his colleague's blew up the engine in his 928. He would complain to Porsche that the car was incorrectly geared because "he would hit the rev limiter in top gear" on the Autobahn. Apparently this was 185mph - though we do not know if this was indicated or actual speed. (And we cannot work this out as the production Club Sport had 2 changes over a standard S4 - lower gearing and a higher rev limit - and we do not know if this changes were applied to these 4 cars).
The car features 16" forged light alloy wheels identical to those fitted to the production Club Sport / SE / Early 89 GT cars. The car has no sunroof, no rear blinds and no rear wiper which is also consistent with a CS. However it has a passenger side mirror and full leather interior which the production CS did not have (although the SE did have a passenger mirror).
Whilst Porsche have not officially identified these 4 cars as prototype Club Sports, it seems pretty certain from the VIN number that this is what they are.
Derek was until recently the only driver of the 4 to have kept his 928. He kept it with his other ultra rare Porsche - a red 924 Carrera GTS. He has covered approx 42,000 miles in the car before selling it.
Without a doubt it is the rarest and most unique 928 in the UK.
Andy Elvers, 5th July 1999.
1988 Porsche 928S series 4 with Sport Equipment -also know as the 928 S4 Sport or 928 S4 SE
Jeffs Red 928S series 4 with Sport Equipment - See the 'Sport' decal on the rear PU!
Original Press release - 928S series 4 with Sport Equipment - (Double Click for pdf)
1988 Porsche 928 S4 Auto
Silver/Blue Linen Lthr, RMB
Contributor: Mike Gibbons
1988 928 S4 Sport, Black
Contributor: Angus Fox, One of 42 1988 cars. My first Porsche!
Registration F501 GWR, VIN: WPOZZZ92ZJS841962
Date Registered, 1st August 1988
Date Bought, 26 April 1998
- L700 - Black
- 08 - Black Leather with Pinstripe
- Options C16 UK Car, 058 Bumpers with impact absorbers, 220 Locking differential, 302 Type designated on rear end, 330 Radio Blaupunkt Toronto SQR 46, 383 Sport seat - left, 387 Sport seat - right, 474 Sport shock absorbers, 494 2 speakers on back shelf, 567 Windshield green graduated tint
- Modifications, Hayward & Scott Rear Muffler Bypass (RMB) Performance Wheel Supplies Cup 1 Replica 17in wheels.
April 1998, Original forged light alloy Wheels in place. These ended up on my 89 GT.
After paint and PWS Cups and Hayward & Scott RMB fitted at Chandler Stewart Official Porsche Body Repair Centre in Croydon. Rear Sticker replaced by them... Spot the difference. I couldn't.
This car is written off. It came to a rather sad end. British Airways Express Parking managed to write it off in a car park while cleaning it. Impressive. Then they wouldnt agree its value so I had to claim it on my own insurance. Marvellous. (Thank you Norwich Union).
928.org.uk recommend Purple Parking!
Decisions decisions, Spot the SE (Pic Jeff Selwood)
No sunroof. No aerial. Proper mirrors! Must an ultra rare 1988 Porsche 928 S4 with Sport Equipment aka the SE or 'Sport' . Im not jealous. Honest! Just 42 built. At least 2 gone. Perhaps not as rare as a 95 GTS manual but arguably better. The SE is the red one on the left! Its a Blue 87 S4 on the right. SE's were only Red, White Black or Silver.
- Club Sport" front springs (still available from Porsche)
- Boge Sport Gas dampers (Bilsteins are a factory equivalent option)
- Different gear ratios (G 28/55 gearbox)
- 40% Limited-slip differential
- Shorter gear lever
- Wider "Club Sport" wheels - 8" front, 9" rear with different offsets
- Spacers to increase the rear track
- Different camshafts (same as used in the GT)
- No sunroof
- Full leather interior (but note seats)
- Sports seats with electric squab height adjustment; part leather
- Different intermediate mufflers, and a final muffler with twin outlets
- Higher rev limit (6,775 RPM), higher idle speed (800 RPM) and different fuel map
SE data points from Andy McIntyre in NZ
1989 'k' model year
Baltic blue S4 (Julian Macedo's Ex), Silver metallic GT (Rupert Stanley), Stone grey metallic S4 (Stephen Welsh), S4 (Justyn Brickman), Baltic blue S4 club sport (Samuel Fournis), Guards red GT (ex Angus Fox)
Many changes were made for model year 1989. Modified pistons were introduced in February 1988 with improved oil drainage. They may be installed retroactively. The fuel pump was modified and pump rollers now run in an elliptically shaped path. An in-tank pump is installed in addition to the fuel pump in order to guarantee delivery rate and avoid cavitation. (If you have a sluggish 1989 928 have the pumps checked out. The in-tank pump can fail causing the main pump to work overtime until it expires). Rubber hoses were replaced with rubber-lined polyamide pipes throughouts the 1988 model year. Polyamide pipes cant be bent or clamped shut for troubleshooting. Loose fitting pipe sleeves are signs of polyamide pipes! (Not a lot of people know that!). The fuel hose on the intake side of the fuel pump is not polyamide so that this hose may be clamped for replacement of fuel filter or removel of fuel tank.
Bosch KTS301 diagnostic tester was introduced for checking fault memories, inputs, system adaption, knock frequency counter and tyre pressure warning system. The tyre pressure warning system originally developed for the 959 was introduced. Pressure loss is automatically detected and notified to the driver by a display in the instrument cluster.
Roof mounted antenna was introduced instead of windshield based antenna. Car wash immune. Less interference.
Porsche information and diagnosing system (also known as digital dashboard) was introduced. Warnings are displayed in three displays text on the outer ones, pictograms on the centre one.
1989 Porsche 928 S4
The number of teeth on gear sets was changed to make the ratios more harmonic. Transmission identical worldwide for the first time. Engine speed and road speed information now used to initiate kickdown. First —> 2nd at 4950 ±50 Other kickdowns at 5950 ±50. The steel plate brake 3 is nitrated to improve N—R and R—N shifts. Pilot bearing for torque converter became a cylindrical roller bearing to absorb oscillation and be less sensitive to displacements between the torque converter and the automatic transmission. The central shaft was increased from 25mm to 28mm to absorb torsional oscilation.
The 1989 928 S4 has a 235kW / 320 PS (309 US HP) 5 litre engine with the same power output with and without catalytic converter.
1989 Porsche 928 GT
1989 Wiessach Test Track, Stuttgart, Germany. Pivotal moment for one Mr Burrell!
In model year 1989 the 928 GT arrived, clearly derived from the 1988 SE / Club Sport. 928 GT cars differ optically from the 928 S4 with forged light alloy wheels, twin pipe exhaust assembly and the 928 GT sign on the rear. Side rubbing strips are optional. Identification of 928 GT cars can be made by finding the option code M 639 - Special model 928 GT.
1989 928 GT's have High power output, 243kW / 330 PS (326 US HP) 5 litre engine with the same power output with and without catalytic converter.
The cars were supplied with sports shock absorbers as standard. Boge Gas pressure shock absorbers could be ordered as an optional extra (M 474) 'for entry of the car in sport racing events'. The M number was reserved additionally for Dunlop Tyres (Goodrich for the USA) Bridgestone tyres were supplied as initial equipment in conjunction with M 474 only when ordered by the customer (Z order)
Wheel rims supplied as standard were forged light alloy rims in Club Sport Design 8 J x 16 front, 9 J x 16 rear offset 60 mm. 17mm spacers are installed for wider track front and rear and rear arches are rolled/folded to ensure clearance.
Important!These spacers must always be removed when mounting the spare wheel or winter tyres on the rear axle
20mm shorter shift lever reduces travel by 10% to the Sporty short ratio five speed manual transmission and multi-plate limited slip differential with 40 % locking ratio
928 GT cars were not been assigned their own range of vehicle identity numbers. Rest of world cars began in model year 1989 in number range WPO ZZZ 92 ZKS 84 0001 . . . 5000 and USA cars in number range WPO JBO 92 - KS 86 0001 . . . 5000.
Other clues are engine numbers beginning, and engine type M28/47 (modified camshafts, 1mm higher cams and new cam shape), and transmission code G28/55 2 (the 2 is for the ZF multi-plate Limited slip differential) (final drive teeth changed to "Klingelnberg" palloid tooth system from motor racing)
Source: Checked and clarified from 928 GT '89 Information Technik, WKD 495.921 and 928 S4 '89 Information Technik, WKD 495 520
1990 'l' model year
S4 and GT cars had PSD as standard replacing the mechanical Limited slip differential.
Degign 90 Cast wheels
GT got modified engine management 330bhp from 320bhp, S4 remained at 320bhp
Handbrake rounded design leather trimmed lower position
Thicker leather covered sterring wheel
1991 'm' model year changes
RDS radio and provision for CD Autochanger
Somewhere along here the analog clock arrived replacing the pifcoesque digital one
Not a lot of people know that!
1991 was the last year of the GT, anything advertised as newer probably sat in a field when new as the GTS arrived in model year 1992
928 Cabs *DO* exist...
1988, Fully electric mechanism, RHD, Manual, about 15k miles, often for sale for a lot of money - one of about 5, the only RHD unless someone knows different.
Pic - Andrew Brierley
Look at the different detailing of the rear. Very Yacht like. I asked who made this and in August 2005 Maurice emailed me to say "Well is was a German firm called Caro. They have a website: http://www.caro-hamburg.de See under "history" page 1 and 2." Thanks for the info..
Pic - Rob Burrell
The big easy
The November 2002 edition of 911 & Porsche World carried a piece on the 928 called "The Big Easy". This cabrio featured in an 'Owner's Views' sidebar. The following information (not the pics) is taken from that source:
- Removed air con and exhaust emission pumps (this was a Californian import), fitted a Power Devil silencer and K&N filter.
- Hood replaced by a hand-made item using a Triumph TR6 frame, fitted Cup alloys, teardrop mirrors and S4 rear end.
- The tailgate spoiler is from a Ford Fiesta RS and the Audi TT -inspired rollover bars were originally intended for a Cobra replica. The bars do add to the structural strength of the car, but does mean the rear seats had to be removed.
- All work carried out between 2000 and 2002.
American spec means it's a 1980 4.5 litre with efi and higher compression than the UK model. Quoted as returning around 20mpg". Pics - Graham Manning
Artz Volkswagen Golf / VW 928 Hot hatch?
1980's Artz VW 928
We were talking on our mailing list about 928 versus Golf VR6. We talk about a lot of things like that :-)
I mentioned there were some VW Golfs that were actually complete 928's with special Golf bodyshells. People were interested and one of our listmembers dug up a few pictures to prove I was not under the influence.
Lets Off road in a Porsche Cayenne
Its certainly the only V8 to speak of the you can buy today.
It's a 928GT driven by Jean-Paul van Kol in the All Dutch Porsche Club Race series. I've attached a link and some pics. More photos can be found on www.racefotos.nl. and http://www.adpcr.nl/Deelnemers/vankol.html