MBF7

##### 1989 Mazda Rx-7 GXL #####

When people talk about the RX-7, one of the things that typically comes up, is the rotary engine. Technically speaking, the rotary engine is peerless Southern
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in its design. A conventional reciprocating engine must convert the linear motion of pistons to the rotary motion needed to power a car. A fair amount of energy is lost in that conversion. A great deal of power is also lost in the valve train. Even though cams run at half speed in comparison to the crank, they have to compress valve spings. Aside from the fact that rotary engines don't require Julie Wade's San Diego
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a linear to rotary conversion, there's no valve train requirement. Mazda is the only automobile manufacturer to use a rotary engine. There're many advantages to the rotary design but the big three are is compact size, high horsepower to size ratio, and the few number of moving parts. There's more to the Rx-7 than just a a unique engine design. The development of the second generation RX-7 resulted in over three hundred patents. One Porsche Meet in
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hundred of those patents were used in the final design. The design goals of the second generation RX-7 outstripped existing automotive technology, so Mazda’s engineers took some cues from aircraft technology. For example, the front A-arms were forged by Kobe Steel on an 8000-ton press. That press was normally used for aircraft components. In addition to the forged On the rack

front A-arms, other suspension parts that were fabricated from aluminum alloys include the rear semi-trailing arms, wheel hubs, and the differential housing. At the time of the second generation RX-7’s manufacture, the power and reliability of the RX-7 had made it the most successful single model in International Motor Sports Association (IMSA) racing history. For the technically inclined automotive enthusiast, the second generation RX-7 is an engaging piece of work.

	The GXL package includes Air conditioning, power windows, power door locks, cruise control, rear wiper/washer, illuminated drivers door lock cylinder, Halogen fog lamps, rigid removable cargo cover, door mounted courtesy lights, illuminated ignition key cylinder, driver and passenger door map pockets, tilt steering column, leather-wrapped steering wheel, leather-wrapped gear shift knob, leather-wrapped handbrake cover, and power sunroof. In addition to the GXL package, the car has factory leather front seats with adjustable drivers lubar and thigh support, leather rear seats (non-factory - the factory rear seats were available only in cloth during the 1989 year), and BBS wheels.
	Specifications General 1989 Base price : GXL $21,600 Weight: 2881 lb (50.2% - 49.8% - front/rear balance) Track front / rear: 57.1/56.7 inches Length: 169.9 inches Height/Width: 49.8 inches / 66.5 inches Wheelbase: 95.7 inches Fuel Capacity.: 18.5 U.S. gallons
	Drivetrain Shortblock - series 5, 6-port, 13b rotary engine twin 654cc inline rotary lightweight rotors w/fully machined combustion recesses 9.7:1 compression ratio .7mm side seals Intake and Exhaust Multi-port electronic fuel injection with two fuel injectors per rotor Variable Dynamic Effect Intake (ECU controlled variable length intake tracks) Linear type airflow meter ECU controled 6-port Induction System ECU controlled electronic oil metering pump Racing Beat header Random Technology high flow cat Racing Beat mufflers Transmission Five speed manual with overdrive Hydraulic clutch linkage Racing Beat lightweight flywheel Ratios 1st - 3.475 2nd - 2.002 3rd - 1.366 4th - 1.00 5th - .697 reverse - 3.493 final drive ratio - 4.1
	Suspension Front Forged aluminum A-arms Rack and pinion steering with vehicle-speed-sensitive variable power assist 15.2:1 ratio 2.7 turns lock to lock Electronically controlled MacPherson type struts (AAS) 24 mm rear anti-roll bar w/ball joint mountings Factory sport coil springs Rear Electronically controlled shock absorbers (AAS) Dynamic tracking suspension system (DTSS) with triaxial floating hubs (passive four-wheel-steering) Forged aluminum semi-trailing-arms Rear camber control links Factory sport coil springs 14 mm rear anti-roll bar w/ball joint mountings
	Brakes Power assisted with dual hydraulic circuits 4-piston calipers (front) 10.9 inch ventilated discs (front) single piston floating calipers (rear) 10.75 inch ventilated discs (rear)