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Mark Martin won the race, only to lose 46 championship points after NASCAR officials discovered a somewhat oversized carburetor spacer plate in his car. This ultimately became a key factor in determining the 1990 championship. It was admitted later that the spacer plate was actually not oversized and not technically illegal.
A 46-point penalty at Richmond, for using an illegal (but non-performance-enhancing) carburetor spacer, caused him to lose to Dale Earnhardt by 26 points in the final standings. During this time, Martin also won five IROC titles (1994, 1996, 1997, 1998, and 2005) and 13 races, both records for that series.
Artist rendering of a NASCAR restrictor plate. A restrictor plate or air restrictor is a device installed at the intake of an engine to limit its power. This kind of system is occasionally used in road vehicles (e.g., motorcycles) for insurance purposes, but mainly in automobile racing, to limit top speed to provide equal level of competition, and to lower costs; insurance purposes have also ...
The last race with the original restrictor plates was the 2019 Daytona 500; after that race, the cars moved to a variable-sized tapered spacer already used at all other tracks, with the exception that the spacer would have smaller holes than the ones used at the smaller tracks, to ensure speeds stay under 200 MPH. The shape of the spacer helps ...
In 1991 Ford again sent a batch of supercharged engines, this time in production Thunderbird SCs, to the Arizona Highway Patrol for hot weather testing. [ 9 ] The supercharged Essex 3.8 L debuted in the new-for-1989 Thunderbird Super Coupe and Cougar XR-7 , becoming the first supercharged engine offered by an American manufacturer since the ...
With a single four-barrel carburetor they weighed 680 lb (308 kg) [26] and were rated at 616 horsepower (459 kW) at 7,000 rpm and 515 lb⋅ft (698 N⋅m) of torque at 3,800 rpm, with dual four-barrel carburetors 657 horsepower (490 kW) at 7,500 rpm and 575 lb⋅ft (780 N⋅m) of torque at 4,200 rpm. Ford sold them via the parts counter, the ...
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