Spec Racer Ford is a class of racing car used in Sports Car Club of America (SCCA) and other series road racing events. The Spec Racer Ford, manufactured and marketed by SCCA Enterprises (a subsidiary of SCCA, Inc.), is a high performance, closed wheel, open cockpit, purpose-built race car intended for paved road courses, such as Mazda Raceway Laguna Seca, Buttonwillow Raceway Park, Road America, Watkins Glen, and many other tracks throughout North America. With more than 871 cars manufactured, it is the most successful purpose built road racing car in the United States.
the Spec Racer Ford is easily identified by the required "SRF" or "SR" designation on either side of the car
Spec Racer was first conceived as low-cost sports racing class by a director of the Sports Car Club of America (SCCA), Ted Cronin, in the early 1980s. The car was developed and originally manufactured by Renault/Jeep Sport USA in Livonia, Michigan under direction of Vic Elford. The car, designed by Roy Lunn, was introduced into SCCA Club Racing in 1984 as "Sports Renault." After Renault bowed out of the program in 1989, and the car was renamed "Spec Racer (SR)." The original Sports Renault/Spec Racer is no longer an SCCA class, although a few Renault powered cars still compete in National Auto Sport Association (NASA), Midwestern Council of Sports Cars Club (MCSCC) and Independent Motorsports Group (IMG) events. By 1994, the supply of rebuildable 1.7-liter Renault engines was drying up in the United States. The SCCA made the decision to replace the original Renault drivetrain with a 1.9-liter engine and five-speed transmission manufactured by the Ford Motor Company. This change gave the SRF an additional 10 horsepower (7.5 kW) to 105 - enough to push the cars along at speeds up to 135 mph (217 km/h). Ford Motor Company started to provide a new drivetrain in 1994 and the cars with the Ford powertrain renamed "Spec Racer Ford (SRF)." For a period of time, both Spec Racers (Renault powered) and Spec Racer Ford (Ford powered) both raced in the SCCA. Other more recent changes to what is now called "Spec Racer Ford" include the now-standard "tallman kit", which is an extension of the original rear roll hoop (which was designed too low), Penske shock absorbers in addition to the original Konis, Butler Built driver seat, alloy wheels, rear wheel well cutouts, engine coolant recovery system, adjustable fuel pressure regulator, a safety modification to the brakes and an optional, smaller alternator. During the life of the car, there have been some incremental changes in various parts to increase durability. Tires are Goodyear Eagle Racing four-shallow-groove slicks and full-deep-groove Gatorback-style rain tires specifically manufactured for the SRF. The SRF still uses the original Renault brake rotors, calipers, outer CV joints, and suspension knuckles.
The SRF rules dictate that no performance enhancing modifications other than suspension adjustments within described parameters can be made to the car. This effectively eliminates the never-ending need for design enhancements and associated large cash outlays necessary in other classes of racecars to remain competitive and puts the focus on driver skill, rather than financial and technical investment. Every Spec Racer Ford weighs the same using ballast that can accommodate drivers who weigh up to roughly 225 pounds, uses the same engine, the same transmission, the same fiberglass body, the same chassis, even the same tires. The idea is that all of the cars are meant to have identical performance, so the only way to go faster is to be a better driver. The SRF's engine, transmission, and shock absorbers are sealed with tamper-proof devices that make it impossible to modify these components undetected. In addition, many parts of the car, including suspension arms, fiberglass, and sheet metal are marked for compliance checking with special holographic tamper-evident stickers bearing the Spec Racer Ford logo. SCCA Enterprises periodically deploys compliance officials to conduct surprise inspections of Spec Racer Fords at SCCA National, SCCA Regional and SCCA Pro Racing events across the US.
Field for 2010 SCCA National Championships (U.S.) Runoffs
- Tube Frame Chassis
- Suspension: front/rear rocker arm, coil-over shock/spring, lower "A" arm, dual externally adjustable anti-roll bars
- Ford 1.9L fuel-injected, water-cooled, SOHC 8-valve, hemispherical head, inline 4-cylinder derived from Ford Escort, sealed by SCCA Enterprises
- ECU: Ford Motorcraft, modified for racing, sealed by SCCA Enterprises
- Ford 5-speed manual transmission, sealed by SCCA Enterprises
- Goodyear Eagle Racing tires (bias-ply, same size on all four corners of car) spec tire, Goodyear Eagle Racing deep-groove rain tire also available
- Custom exhaust
- Wheels: spec 13-inch alloy, can also run spec stamped steel wheels
- Brake Pads: Hawk (spec pads)
- Cockpit Adjustable Brake Bias (Tilton)
- Penske Racing or Koni (original) shock absorbers (single adjustable, rebound only) sealed by SCCA Enterprises
- 92 in (2,337 mm) wheelbase
- 1,670 lb (757 kg). including driver
- 3-piece fiberglass body
- Instruments: tachometer, oil pressure, water temperature, alternator warning light
- 105 hp (+/- approx. 3 hp)
- Fuel Capacity: 7.75 US gal (29 L; 6 imp gal) ATL Fuel Cell
- Fuel: commercial pump fuel only, usually 93 to 100 octane
- 135 mph (217 km/h) top speed
Gaming / Simulation 
The Spec Racer Ford is available in iRacing where the car is now available in the starting rookie package. It is also available as a freeware download for rFactor.
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