Spec Racer Ford (SRF)

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The Spec Racer Ford is a one-design, fixed-specification race car; thus the name “Spec Racer”. Critical chassis parts must be only those produced by the vehicle kit manufacturer, SCCA Enterprises. The engines, transmissions, and shock absorbers are sealed by SCCA Enterprises to ensure that each of these components is the same for all competitors. Engine assembly and rebuild can only be performed by SCCA Enterprises, who ensure that every engine leaving their shop is within a 3-horsepower window. With each car in the race being virtually identical, the emphasis is placed on driver skill and not on the latest trick components. Close racing is guaranteed, since no one competitor has a large performance advantage. The cost of racing is also dramatically reduced, since standard parts can be mass-produced and do not change over time.

This philosophy of stable design and equal competition has resulted in the Spec Racer Ford becoming one of the most popular categories of racing in the SCCA, with as many as 2,000 racers participating nationwide each year. Over 840 cars have been delivered over the past 20 years, with new units continuing to expand the class each year.

The Spec Racer Ford (SRF) is an enclosed-wheel, open-cockpit, mid-engine, purpose-built race car. The chassis is a steel tube frame with the driver centered in the cockpit. The body is a three-piece fiberglass design having tightly-controlled dimensions. Power is provided by a Ford 1.9-liter single overhead cam four-cylinder engine. Tires must be Goodyear SRF-branded racing tires, with one model for dry track conditions and one model for rain races.

ENGINE bay

BARE FRAME

FRONT CHASSIS DETAIL

REAR CHASSIS DETAIL

The suspension uses rocker-arm-actuated springs and shocks, with adjustable front and rear swaybars. The four shock absorbers are sealed and rebound-adjustable, being either Penske gas monotube or Koni steel twin-tube units. Camber, caster, toe, ride height, and corner weights are fully adjustable. Steering is rack and pinion.

Data acquisition and cockpit instruments are fundamentally unrestricted, as long as they have no part in controlling vehicle systems.

SRF Specifications:
• Chassis: Tubular steel welded frame
• Engine: Ford 1.9 Liter fuel-injected SOHC 8-valve Hemi-head 4-cylinder, water cooled, sealed
• Transmission: Ford 5-speed synchronized transaxle, sealed
• Exhaust: 4-into-2-into-1 steel tubular header
• Engine Management: Ford Electronic EEC IV
• Wheelbase: 92"
• Track: Front: 57.5” Rear: 57.75”
• Weight: 1670 lbs. (with driver)
• Suspension: Independent front and rear, inboard shocks actuated by rocker arms
• Shock absorbers: Rebound adjustable, Penske gas monotube, or Koni twin tube, sealed
• Fuel: Unleaded 93 Octane or greater “pump gas”
• Fuel capacity: Approximately 7 gallons contained in a racing fuel cell
• Brakes: 4-wheel disc, Brembo solid rotors, single-piston calipers, cockpit adjustable bias
• Body: Three piece fiberglass
• Horsepower: 105
• Top Speed: 135 mph
• Wheels: Front: 13x5.5” Rear: 13x7”
• Tires: Goodyear Eagle A400 SRF tire: Front - 22"x7"x13"; Rear - 22"x7"x13"