Porsche 924
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| Porsche 924 | |
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| Manufacturer: | Porsche |
| Class: | FR sports car |
| Production: | 1976 – 1988 |
| Predecessor: | Porsche 914 Porsche 912E |
| Successor: | Porsche 944 |
| Body Styles: | 2-door coupe |
| Engines: | 2.0 L, 2.5 L I4 |
The Porsche 924 was an automobile produced by Porsche AG of Germany from 1976 to 1988. A two-door, 2+2 seat sports car coupe, the 924 replaced the 914 as the company's entry-level model, and was the model that finally retired the 912. It was the first Porsche model powered by a water-cooled, front-mounted engine to make production, although the similarly-configured 928 was designed before the 924. The front-engine, rear wheel drive arrangement was normal for most other manufacturers, but it was unusual for Porsche, who had previously only used mid or rear-mounted engines of a boxer configuration, all of which had been air-cooled. The 924 was a success, and not only helped to take Porsche out of financial ruin, but created the revenue stream needed to continue building and developing the 911. The 924 was replaced by the 944 in 1982 in the US market, but continued to be produced until 1985 in the Rest of World market.
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[edit] History
The 924 was originally intended to be Volkswagen's flagship sports coupe. Volkswagen commissioned Porsche to design the car, who developed a fresh chassis and transmission that would work with an existing Audi I4 engine. They also handled the suspension and the interior and exterior design. Porsche decided on a rear wheel drive layout, and designed a rear transaxle to help provide 52/48 front/rear weight distribution.
Due to growing concern over the oil crisis, Volkswagen put the project on hold, eventually dumping it entirely after their decision to move forward with the Quattro Coupe model instead. Porsche, who needed a model to replace the 914, made a deal with Volkswagen leadership, agreeing to buy the design for 100 million DM -- $10 million less than what Volkswagen paid Porsche to design it.
The deal specified that the car would be built at the ex-NSU factory in Neckarsulm located north of the Porsche headquarters in Stuttgart, the Volkswagen employees would do the actual production line work and that Porsche would own the design. It became one of Porsche's best-selling models to date, and the relative cheapness of building the car made it both profitable and fairly easy for Porsche to finance.
The original design used an Audi-sourced four-speed manual transmission for the 924 mated to VW's EA831 2.0 L I4 engine, previously used in the Audi 100 and Volkswagen LT van and producing 95 hp (71 kW) in North American trim. This later came up to 110hp (87kw). The four-speed manual was the only transmission available for the initial 1976 model. An Audi three speed automatic was offered starting with the 1977 model year.
European models, which didn't require power-sapping emissions equipment, made 125 hp. They also differed visually from the US spec model by not having the US cars low-speed impact bumpers and the round reflectors on each end of the body.
A 5-speed transmission, available starting in 1979, was a "dogleg" Porsche unit. This was troublesome and was quickly replaced for 1980 with a normal H-pattern audi five speed. The brakes were solid discs at the front and drums at the rear. The four wheel disc brakes, five lug hubs and alloys from the 924 Turbo were available on the base 924 as an "S" package starting with the 1980 model year.
The overall styling was penned by Dutchman Harm Lagaay, a member of the Porsche styling team, with the hidden headlights, sloping hoodline and grille-less nose giving the car its popular wedge shape. The car went on sale in the USA in July 1976 as a 1977 model with a base price of $9,395. Porsche made small improvements to the 924 each model year between 1977 and 1985, but nothing major was changed.
J. Pasha, writing in Excellence magazine, at the time, described the 924 as "the best handling Porsche in stock form".
[edit] Production
[edit] 924
| Model Year | Production | Rest of World | USA | Japan |
| 1976 | 5145 | 5145 | ||
| 1977 | 25596 * | 17675 | 7496 | 425 |
| 1978 | 21562 | 9474 | 11638 | 450 |
| 1979 | 20619 | 10475 | 9636 | 508 |
| 1980 | 12794 † | 9094 | 3700 | |
| 1981 | 11824 ‡ | 9669 | 2155 | |
| 1982 | 10091 | 7814 | 2277 | |
| 1983 | 5785 | 5785 | ||
| 1984 | 4659 | 4659 | ||
| 1985 | 3214 | 3214 | ||
| total | 121289 | 83004 | 36902 | 1383 |
* includes 3000 special edition "Martini" cars
† includes 1030 special edition "Le Mans" cars
‡ includes 1015 special edition "50 Jahre Porsche/Weissach" cars
[edit] 924 Turbo (931)
| Model Year | Production | Rest of World | US | Japan |
| 1979 | 2932 | 1982 | 950 | |
| 1980 | 5243 | 1803 | 3440 | |
| 1981 | 3312 | 1783 | 1529 * | 1529 * |
| 1982 | 1819 | 876 | 943 | |
| 1983 | 310 | 310 † | ||
| total | 13616 | 5568 | 6795 | 943 |
* sum total of cars brought into US and Japan
† cars brought only into Italy
[edit] 924 Carrera GT (937/938)
| Model Year | Production | Germany | UK | Rest of World | Notes |
| 1980 | 406 | 200 | 75 | 131 | includes prototypes |
[edit] 924S
| Model Year | Production | Rest of World | US | Notes |
| 1986 | 3536 | 3536 | ||
| 1987 | 8940 | 1993 | 6947 | |
| 1988 | 4193 | 2003 | 2190 | production ended Sept. ‘88 |
| total | 16669 | 7532 | 9137 |
There was also a sport package for the 924S, brought into the US, for which we have no production data.
[edit] 924 Special Production
| Model Year | Type | Production | Notes |
| 1978 | 924 Rallye Turbo | 4 | |
| 1979 | 924 Rallye Turbo | 1 | |
| 1979 | 924 SCCA | 16 | for US market |
| 1979 | 924 Group 4 | 1 | built up from street car |
| 1980 | 924 Le Mans GTP | 4 | |
| 1981 | 924 Carrera GTS | 59 | 15 were Club Sport with cage, etc. |
| 1981 | 924 Carrera GTR | 17 | |
| total | 101 |
[edit] 924 Turbo
Porsche executives soon recognised the need for a higher-performance version of the 924 that could bridge the gap between the basic 924 and the 911s. Having already found the benefits of turbochargers on several race cars and the 1975 911 Turbo, Porsche chose to use this technology for the 924, eventually introducing the 924 Turbo as a 1978 model.
Porsche started with the same Audi-sourced 2.0 L I4, designed an all new cylinder head (which was hand assembled at Stuttgart), dropped the compression to 7.5:1 and engineered a kkk k-26 turbocharger for it. With 10 psi (70 kPa) boost output increased to 170 hp (127 kW).
In order to help make the car more functional, as well as to distinguish it from the naturally-aspirated version, Porsche added a NACA duct in the hood and air intakes in the badge panel in the nose, 15-inch spoke-style alloy wheels, four-wheel disc brakes with 5 stud hubs and a five-speed transmission.
Internally, Porsche called it 931 (left hand drive) and 932 (right hand drive) internally, much like the 911 Carrera Turbo, which had been "Type 930". These designations are commonly used by 924 aficionados.
The turbocharged engine allowed the 924's performance to come surprisingly close to that of the 911 SC (180 bhp), thanks in part to a lighter curb weight, but it also brought reliability problems. Intense heat in the engine bay lead to short turbocharger life and turbo-related seal and seat problems. To fix the problems, Porsche released a revised 924 Turbo series 2 (although badging still read 924 Turbo) in 1981. By using a smaller turbocharger running at increased boost, slightly higher compression of 8:1 and an improved fuel injection system with DITC ignition triggered by the flywheel, reliability improved and power rose to 177 hp (132 kW).
After a successful sales run of both naturally-aspirated and turbo models, in 1981 Porsche decided to surprise everyone and a new 924 variant was unveiled at Le Mans 24 Hours.
By adding an intercooler, increasing compression to 8.5:1 as well as various other little changes, Porsche was able to develop the 924 Turbo into the race car they had wanted, dubbing it the 924 Carrera GT.
Visually it differed to the 931 in that it had polyurathane plastic front and rear flared guards, a polyurathane plastic front spoiler, a top mounted air scoop for the intercooler, a much larger rubber rear spoiler and a flush mounted front windscreen. It lost the 931's NACA duct in the hood but retained the air intakes in the badge panel. This more aggressive styling was later used for as motivation for the 944.
In order to comply with the homologation regulations, the 924 Carrera GT and later 924 Carrera GTS were offered as road cars as well, producing 210 and 245 hp (157 and 183 kW) respectively. Clubsport versions of the GTS were available with a factory included Matter rollcage and race seats. 924 Carrera GT variations were known by model numbers 937 (left hand drive) and 938 (right hand drive).
The ultimate development of the 924 in its race trim was the 924 Carrera GTR race car, which produced 375 hp (280 kW) from a highly modified version of the 2.0 L I4 used in all 924s except for the 944 Carrera GTP which used a highly modified as yet unreleased 944 2.5 litre DOHC 16v Porsche unit. This last model variant came 7th overall at Le Mans 24 Hours and spent the least time out of any other car in the pits.
Production of the 924 Turbo ceased in 1982 but in (1984 for Italy).
In 1986 the 924S was released. Porsche realised with the 944's prices increasing with new standard features and options, they were losing their place as Porsches entry-level model car. The 924S had an old-spec 944 engine and drivetrain but with a normal slim 924 body. In 1987 the 924S Le Mans (or Special Edition) was made available in limited numbers with a 944 spec 163hp engine, uprated suspension and cosmetically upgraded interior and exterior. This special 924 had manual windows, no sunroof, and no air conditioning to save weight, although you could order one with air conditioning if you so wished.
In 1988, the final year of production for the 924S, the power for all models was brought up to 163 hp (122 kW).
[edit] References
- Wood, J (1997). Porsche: The Legend. Parragon. ISBN 0-75252-072-5.
- Long, B (2000). Porsche 924. Veloce. ISBN 1-901295-85-0.
- 924/944/968 FAQ
[edit] External links
- 924/944/968 Frequently Asked Questions
- A fan page for the Porsche 924
- 924board.org
- Porsche 924 photo gallery
- Free Porsche 924 classified and resource site
- Official Porsche 924 Official Specs
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