Mazda RX-7

Series 1 (produced from 1978 until 1980) is commonly referred to as the "SA22C" from the first alphanumeric of the vehicle identification number. Mazda's internal project number for what was to become the RX-7 was X605. In Japan, it was introduced in March 1978, replacing the Savanna RX-3, and joined Mazda's only other remaining rotary engine-powered products, called the Cosmo which was a two-door luxury coupé, and the Luce luxury sedan.

The lead designer at Mazda was Matasaburo Maeda (前田 又三郎, Maeda Matasaburō), whose son, Ikuo, would go on to design the Mazda2 and the RX-7's successor, the RX-8.[2] The transition of the Savanna to a sports car appearance reflected products from other Japanese manufacturers. The advantage the RX-7 had was its minimal size and weight, and the compact rotary engine installed behind the front axle helped balance the front and rear weight distribution, which provided a low center of gravity.

In Japan, sales were enhanced by the fact that the RX-7 complied with the Japanese Government dimension regulations: thus Japanese buyers were not liable for yearly taxes for driving a larger car. The rotary engine had financial advantages to Japanese consumers in that the engine displacement remained below 1,500 cc (1.5 L), a significant determination when paying the Japanese annual road tax; this kept the obligation affordable to most buyers while having more power than the traditional engines having a straight cylinder configuration.

In May 1980, Mazda introduced a limited production run of special North American models known as the Leathersport Models. This package was essentially an uprated GS model with added LS badges on each B-pillar, special stripes on the exterior, and LS-only gold anodized wheels (with polished outer face and wheel rim). All LS editions came equipped with special LS-only full brown leather upholstery, leather-wrapped steering wheel, leather-wrapped shift knob, removable sunroof, LS-specific four-speaker AM/FM stereo radio with power antenna (though listed as a six-speaker stereo, as the two rear dual voice coil speakers were counted as four speakers in total), remote power door side mirrors, and other standard GS equipment. Two primary options were also available; a three-speed JATCO 3N71B automatic transmission and air conditioning. Other GS options such as cassette tape deck, splash guards, padded center console arm rest and others could be added by the dealer. The LS model was only ever available in three different exterior colors: Aurora White, Brilliant Black, and Solar Gold. No official production records are known to exist or to have been released. This series of RX-7 had exposed steel bumpers and a high-mounted indentation-located rear license plate, called by Werner Buhler of Road & Track magazine a "Baroque depression."

Mazda RX-7 Series 2 GSL (US; 1983)

The Series 2, referred to as the FB (produced from 1981 to 1983), had integrated plastic-covered bumpers, wide black rubber body side moldings, wraparound taillights and updated engine control components. While marginally longer overall, the new model was 135 lb (61 kg) lighter in federalized trim.[3] The four-speed manual option was dropped for 1981 as well, while the gas tank grew larger and the dashboard was redesigned, including a shorter gear stick mounted closer to the driver.[3] In 1983, the 130 mph (209 km/h) speedometer returned for the RX-7. The GSL package provided optional four-wheel disc brakes, front ventilated (Australian model) and clutch-type rear limited-slip differential (LSD). This revision of the SA22 was known in North America as the "FB" after the US Department of Transportation mandated 17 digit Vehicle Identification Number changeover. For various other markets worldwide, the 1981–1985 RX-7 retained the 'SA22C' VIN prefix. In the UK, the 1978–1980 series 1 cars carried the SA code on the VIN but all later cars (1981–1983 series 2 and 1984–1985 series 3) carried the FB code and these first-generation RX-7s are known as the "FB" only in Northern America.

In Japan, a very well appointed version similar to the export market GSL arrived late in 1982, called the SE-Limited. This model received two-tone paint, alloy wheels shaped like the Wankel rotor, all-wheel disc brakes, limited-slip differential, and a full leather interior. It also had the latest iteration of the 12A rotary engine, the RE-6PI with variable induction port system and 140 PS (103 kW; 138 hp).[4]

In Europe, the FB was mainly noticed for having received a power increase from the 105 PS (77 kW) of the SA22; the 1981 RX-7 now had 115 PS (85 kW) on tap. European market cars also received four-wheel disc brakes as standard.[5]

1984–1985 Mazda RX-7 (Series 3)

Series 3 Interior (US)

The Series 3 (produced 1984–1985) featured an updated lower front fascia. North American models received a different instrument cluster. GSL package was continued into this series, but Mazda introduced the GSL-SE sub-model. The GSL-SE had a fuel injected 1,308 cc (1.3 L) 13B RE-EGI engine rated at 135 hp (101 kW; 137 PS) and 133 lb⋅ft (180 N⋅m). GSL-SE models had much the same options as the GSL (clutch-type rear LSD and rear disc brakes), but the brake rotors were larger, allowing Mazda to use the more common lug nuts (versus bolts), and a new bolt pattern of 4x114.3mm (4x4.5"). Also, they had upgraded suspension with stiffer springs and shocks. The external oil cooler was reintroduced, after being dropped in the 1983 model-year for the controversial "beehive" water-oil heat exchanger.

The 1984 RX-7 GSL has an estimated 29 MPG (8.11 litres/100 km) highway/19 MPG (12.37 L/100 km) city. According to Mazda, its rotary engine, licensed by NSU-Wankel allowed the RX-7 GSL to accelerate from 0 to 80  km/h (50  mph) in 6.3 seconds.

In 1985, Mazda introduced the RX-7 Finale in Australia. This was the last of the series and brought out in limited numbers. The Finale featured power options and a brass plaque mentioning the number the car was as well as "Last of a legend" on the plaque. The finale had special stickers and a blacked out section between the window & rear hatch.

The handling and acceleration of the car were noted to be of a high caliber for its day. The RX-7 had "live axle" 4-link rear suspension with Watt's linkage, a 50:50 front and rear weight distribution, and weighed under 1,100 kg (2,425 lb). It was the lightest generation of the RX-7 ever produced. 12A-powered models accelerated from 0–97 km/h (60 mph) in 9.2 seconds, and turned 0.779 g (7.64 m/s²) laterally on a skid pad. The 1,146 cc (1.1 L) 12A engine was rated at 100 hp (75 kW; 101 PS) at 6,000 rpm in North American models, allowing the car to reach speeds of over 190 km/h (120 mph). Because of the smoothness inherent in the Wankel rotary engine, little vibration or harshness was experienced at high engine speeds, so a buzzer was fitted to the tachometer to warn the driver when the 7,000 rpm redline was approaching.

The 12A engine has a long thin shaped combustion chamber, having a large surface area in relation to its volume. Therefore, combustion is cool, giving few oxides of nitrogen. However, the combustion is also incomplete, so there are large amounts of partly burned hydrocarbons and carbon monoxide. The exhaust is hot enough for combustion of these to continue into the exhaust. An engine-driven pump supplies air into the exhaust to complete the burn of these chemicals. This is done in the "thermal reactor" chamber where the exhaust manifold would normally be on a conventional engine. Under certain conditions, the pump injects air into the thermal reactor and at other times air is pumped through injectors into the exhaust ports. This fresh air is needed for more efficient and cleaner-burning of the air/fuel mixture.[6]

Options and models varied from country to country. The gauge layout and interior styling in the Series 3 was only changed for the North American models. Additionally, North America was the only market to have offered the first generation of the RX-7 with the fuel-injected 13B, model GSL-SE. Sales of the first-generation RX-7 were strong, with a total of 474,565 cars produced; 377,878 (nearly eighty percent) were sold in the United States alone.

Mazda Savanna RX-7 Turbo

Following the introduction of the first turbocharged rotary engine in the Luce/Cosmo, a similar, also fuel injected and non-intercooled 12A turbocharged engine was made available for the top-end model of the Series 3 RX-7 in Japan. It was introduced in September 1983.[7] The engine was rated at 165 PS (121 kW) (JIS) at 6,500 rpm. While the peak power figures were only slightly higher than those of the engine used in the Luce/Cosmo, the new "Impact Turbo" was developed specifically to deal with the different exhaust gas characteristics of a rotary engine. Both rotor vanes of the turbine were remodeled and made smaller, and the turbine had a twenty percent higher speed than a turbo intended for a conventional engine.[8] The Savanna Turbo was short-lived, as the next generation of the RX-7 was about to be introduced.

1988 Mazda RX-7 convertible (FC)

Mazda introduced a convertible version of the RX-7, the FC3C, in 1988 with a naturally aspirated engine—introduced to the US market with ads featuring actor James Garner, at the time featured in many Mazda television advertisements. Only about 22,000 convertibles were built.

The convertible featured a removable rigid section over the passengers and a folding fabric rear section with heated rear glass window. Power operated, lowering the top required unlatching two header catches, power lowering the top, exiting the car (or reaching over to the right-side latch), and folding down the rigid section manually. Mazda introduced with the convertible the first integral windblocker, a rigid panel that folded up from behind the passenger seats to block unwanted drafts from reaching the passengers—thereby extending the driving season for the car with the top retracted.[10] The convertible also featured optional headrest-mounted audio speakers and a folding leather snap-fastened tonneau cover. The convertible assembly was precisely engineered and manufactured, and dropped into the ready body assembly as a complete unit—a first in convertible production.

Production ceased in 1991 after Mazda marketed a limited run of 500 examples for 1992 for the domestic market only. In markets outside the US, only the turbocharged version of the convertible was available.

The Series 4 (produced for the 1986 through the 1988 model years) was available with a naturally aspirated, fuel injected 13B-VDEI producing 146 hp (109 kW; 148 PS) in North American spec. An optional turbocharged model, known as the Turbo II in the American market, was rated at 182 hp (136 kW; 185 PS) and 183 lb⋅ft (248 N⋅m) of torque at 3,500 rpm. The turbo model was introduced at the Chicago Auto Show in February 1986, with a target of 20 percent of overall RX-7 sales.[11]

The Series 5 (1989–1992) featured updated styling and better engine management, as well as lighter rotors and a higher compression ratio 9.7:1 for the naturally aspirated model, and 9.0:1 for the turbo model. The naturally aspirated Series 5's 13B-DEI engine was rated at 160 hp (119 kW; 162 PS), while the Series 5 Turbo was rated at 200 hp (149 kW; 203 PS) at 6,500 rpm and 195 lb⋅ft (264 N⋅m) of torque at 3,500 rpm.

Mazda sold 86,000 RX-7s in the US alone in 1986, its first model year, with sales peaking in 1988.

Mazda introduced the 10th Anniversary RX-7 in 1988 as a limited production model based on the RX-7 Turbo II. Production was limited to 1,500 units. The 10th Anniversary RX-7 features a Crystal White monochromatic paint scheme with matching white body side moldings, tail light housings, mirrors and 16-inch alloy seven-spoke wheels. There were two "series" of 10th Anniversary models, with essentially a VIN-split running production change between the two. The most notable difference between the series can be found on the exterior- the earlier "Series I" cars had a black "Mazda" logo decal on the front bumper cover, whereas most if not all "Series II" cars did not have the decal. Series II cars also received the lower seat cushion height/tilt feature that Series I cars lacked. Another distinctive exterior feature is the bright gold rotor-shaped 10th Anniversary Edition badge on the front fenders (yellow-gold on the Series II cars). A distinctive 10th Anniversary package feature is the all black leather interior (code D7), which included not just the seats, but the door panel inserts as well and a leather-wrapped MOMO steering wheel (with 10th Anniversary Edition embossed horn button) and MOMO leather-wrapped shift knob with integrated boot. All exterior glass is bronze tinted (specific in North America to only the 10th Anniversary), and the windshield was equipped with the embedded secondary antenna also found on some other select models with the upgraded stereo packages. Other 10th Anniversary Edition specific items were headlight washers (the only RX-7 in the US market that got this feature), glass breakage detectors added to the factory alarm system, 10th Anniversary Edition logoed floor mats, 10th Anniversary Edition embroidered front hood protector and accompanying front end mask (or "bra"), and an aluminum under pan.[12][13]

In 1989, with the introduction of the facelifted FC RX-7, and to commemorate the RX-7s IMSA domination, Mazda introduced a limited model labeled the GTUs. Starting with the lightweight base model, which came with manual windows, no rear wiper, the sunroof and air conditioning was dealer optioned, the GTUs added items found on the Turbo model such as four-piston front brakes, ventilated rear brake rotors, vehicle speed-sensing power steering, one-piece front chin spoiler, cloth-covered Turbo model seats, leather-wrapped steering wheel, 16-inch wheels, 205/55VR tires, and a GTUs-only 4.300 viscous-type limited-slip differential (all other FC LSD's were 4.100). This allowed quicker acceleration from the naturally aspirated 13B rotary engine. It was rumored that Mazda built 100 cars in 1989–1990. There have not been 100 of these models found and registered. The only way to verify the GTUs model is through the door ID tag and firewall VIN. It is the only model with turbo ID tags and a non turbo VIN.[14]

RX-7 Spirit Type R A-spec with pop-up headlights raised

Series 6 was exported throughout the world and had the highest sales. In Japan, Mazda sold the RX-7 through its ɛ̃fini brand as the ɛ̃fini RX-7. Models in Japan included the Type S, the base model, Type R, the lightweight sports model, Type RZ, Type RB, A-spec and the Touring X, which came with a four-speed automatic transmission.[22] The RX-7 was sold in 1993–1995 in the U.S. and Canada. The Series 6 was rated at 255 PS (188 kW; 252 hp) and 294 N⋅m (217 lb⋅ft).

At launch, three option packages were offered; the unlabeled base model, the Touring and the R1 (renamed R2 in 1994). All cars were only available as a 2-seater unlike the previous generation which was a 2+2 configuration in North America. All cars were equipped with the same sequential twin-turbo 13B REW engine. A 5-speed manual transmission was standard and a 4-speed automatic was available on the base model and Touring package. A driver-side airbag and anti-lock brakes are standard as well. The Touring package included a glass moonroof, fog lights, leather seats, a rear window wiper and a Bose Acoustic Wave music system with CD player.[20] The R1 (R2 in 1994–95) model featured upgraded springs, Bilstein shocks, an additional engine oil cooler, an aerodynamics package comprising a front lip and rear wing, suede seats and Pirelli Z-rated tires. Cruise control was deleted on the R1.[23] The R2 differed from the R1 in that it had slightly softer suspension.[20]

In 1994, the interior received a small update to include a passenger-side air bag, and a PEG (popular equipment group) package was offered. The PEG package featured leather seats, a rear cargo cover and a power steel sunroof. It did not include the fog lights or Bose stereo of the touring package. An automatic transmission was not available with the PEG.

In 1995, the Touring package was replaced by the PEP (popular equipment package). The PEP included a rear wing, leather seats, sunroof and fog lights, but didn't have the Bose Stereo nor the rear window wiper.[20] An estimated 500 RX-7s were produced for the 1995 model year.[24] This would be the final year of RX-7 production for North America.

A special high-performance version of the RX-7 was introduced in Australia in 1995, named the RX-7 SP. This model was developed to achieve homologation for racing in the Australian GT Production Car Series and the Eastern Creek 12 Hour production car race.[25] An initial run of 25 cars were made, and later an extra 10 were built by Mazda due to demand.[26] The RX-7 SP was rated at 277 PS (204 kW; 273 hp) and 357 N⋅m (263 lb⋅ft) of torque, a substantial increase over the standard model. Other changes included a race-developed carbon fiber nose cone and rear spoiler, a carbon fibre 120 L (32 US gal) fuel tank (as opposed to the 76 L (20 US gal) tank in the standard car), a 4.3:1 final drive ratio, 17-inch wheels, larger brake rotors and calipers. A "three times more efficient" intercooler, a new exhaust, and a modified ECU were also included.[26] Weight was reduced significantly with the aid of further carbon fibre usage including lightweight vented bonnet and Recaro seats to reduce weight to 1,218 kg (2,685 lb) (from 1,250 kg (2,756 lb)) making this model road-going race car that matched the performance of the rival Porsche Carrera RS Club Sport for the final year Mazda officially entered.[25] The formula paid off when the RX-7 SP won the 1995 Eastern Creek 12 Hour, giving Mazda the winning 12-hour trophy for a fourth straight year.[25] The winning car also gained a podium finish at the international tarmac rally Targa Tasmania months later. A later special version, the Bathurst R, was introduced in 2001 to commemorate this victory in Japan only.[27] It was based on the RX-7 Type R and 500 were built in total, featuring adjustable dampers, a carbon fibre shift knob, carbon fibre interior trim, special fog lamps and a different parking brake lever.[28]

Mazda 13B-REW rotary engine

In Europe, only 1,152 examples of the FD were sold through the official Mazda network, due to a high price and a fairly short time span. Only one model was available and it included twin oil-coolers, electric sunroof, cruise control and the rear storage bins in place of the back seats.[29] It also has the stiffer suspension and strut braces from the R models.[30] Germany topped the sales with 446 cars, while UK is second at 210 and Greece third with 168 (thanks to that country's tax structure which favored the rotary engine).[31] The European models also received the 1994 interior facelift, with a passenger air bag. Sales in most of Europe ended after 1995 as it would have been too expensive to reengineer the car to meet the new Euro 2 emissions regulations.

In the United Kingdom, for 1992, customers were offered only one version of the FD, which was based on a combination of the US touring and the base model.[29] For the following year, in a bid to speed up sales, Mazda reduced the price of the RX-7 to £25,000, down from £32,000, and refunded the difference to those who bought the car before that was announced. From 1992 to 1995, only 210 FD RX-7s were officially sold in the UK.[31] The FD continued to be imported to the UK until 1996. In 1998, for a car that had suffered from slow sales when it was officially sold, with a surge of interest and the benefit of a newly introduced SVA scheme, the FD would become so popular that there were more parallel and grey imported models brought into the country than Mazda UK had ever imported.[32]

Series 7 included minor changes to the car. Updates included a simplified vacuum routing manifold and a 16-bit ECU which combined with an improved intake system netted an extra 10 PS (7 kW). This additional horsepower was only available on manual transmission cars as the increase in power was only seen above 7,000 rpm, which was the redline for automatic transmission equipped cars. The rear spoiler and tail lights were also redesigned. The Type RZ model was now equipped with larger brake rotors as well as 17-inch BBS wheels. In Japan, the Series 7 RX-7 was marketed under the Mazda and ɛ̃fini brand name.

Series 7 RX-7s were also sold in Australia, New Zealand and the UK. Series 7 models were produced only with right-hand drive (RHD), which likely explains why they were only exported to these RHD markets.

Series 8 was the final series, and was only available in the Japanese market. More efficient turbochargers were available on certain models, while improved intercooling and radiator cooling was made possible by a redesigned front fascia with larger openings. The seats, steering wheel, and instrument cluster were all changed. The rear spoiler was modified and gained adjustability on certain models. Three horsepower levels are available: 255 PS (188 kW; 252 hp) for automatic transmission equipped cars, 265 PS (195 kW; 261 hp)for the Type RB, and 280 PS (206 kW; 276 hp) available on the top-of-the-line sporting models.

The high-end "Type RS" came equipped with Bilstein suspension and 17-inch wheels as standard equipment, and reduced weight to 1,280 kg (2,822 lb). Power was increased with the addition of a less restrictive muffler and more efficient turbochargers which featured abradable compressor seals, 280 PS (206 kW; 276 hp) at 6,500 rpm and 314 N⋅m (232 lb⋅ft) of torque at 5000 rpm as per the maximum Japanese limit. The Type RS had a brake upgrade by increasing rotor diameter front and rear to 314 mm (12.4 in) and front rotor thickness from 22 mm (0.9 in) to 32 mm (1.3 in). The Type RS version also sported a 4.30 final drive ratio, providing a significant reduction in its 0–100 km/h (62 mph) time. The gearbox was also modified, 5th gear was made longer to reduce cruising rpm and improve fuel efficiency. The very limited edition Type RZ version included all the features of the Type RS, but at a lighter weight, at 1,270 kg (2,800 lb). It also featured gun-metal colored BBS wheels and a red racing themed interior. An improved ABS system worked by braking differently on each wheel, allowing the car better turning during braking. The effective result made for safer driving for the average buyer.

Mazda RX-7 Spirit R

Instrument panel of RX-7 spirit R

Easily the most collectible of all the RX-7s was the last model limited to 1,500 units. Dubbed the "Spirit R", they combined all the extra features Mazda had used on previous limited-run specials with new exclusive features like cross-drilled brake rotors. Sticker prices when new were 3,998,000 yen for Type-A and B and 3,398,000 yen for Type-C. Mazda's press release said "The Type-A Spirit R model is the ultimate RX-7, boasting the most outstanding driving performance in its history."

There are three models of "Spirit R": the "Type A", "Type B", and "Type C". The "Type A" is a two-seater with a 5-speed manual transmission. It features lightweight red trim Recaro front seats as seen in the earlier RZ models. The "Type B" shares all features of the "Type A" but with a 2+2 seat configuration. The "Type C" is also a 2+2, but has a 4-speed automatic transmission. Of the 1,504 Spirit R's made, 1,044 were Type A, 420 Type B and 40 Type C.[33] An exclusive Spirit R paint color, Titanium Grey, adorned 719 of the 1,504 cars produced.

In Japan the FD3S production span is categorized into 6 models: #1 from 1991/12, #2 from 1993/08, #3 from 1995/03, #4 from 1996/01, #5 from 1998/12 and #6 from 2000/10. The model number (1 to 6) actually shows as the first digit of the 6 characters long JDM VIN number, for example in VIN# FD3S-ABCDEF the A is the model number. A total of 9 limited editions (type RZ in 1992/10 (300 cars), RZ 1993/10 (150), R-II Bathurst 1994/09 (350), R Bathurst X 1995/07 (777), RB Bathurst X 1997/01 (700), RS-R 1997/10 (500), RZ 2000/10 (325), R Bathurst R 2001/08 (650), Spirit R 2002/04 (1504)) and 2 special editions (Bathurst R 1995/02, R Bathurst 2001/12 (2174)) were produced.[34][35][36]

The third-generation Mazda RX-7 entered its first professional race in the world on February 23, 1992, at the Miami Grand Prix. The cars made it to the podium many times and won the IMSA Supercar race at Sebring in 1994. Peter Farrell Motorsport also fielded RX-7's in the IMSA Firestone Firehawk Endurance Series dominating many races and finishing runner up in the overall championship two years in a row.