kat
10-27-2000, 08:24 PM
Busch Series mandates carburetor booster wires
By Dave Rodman
NASCAR Online
MILLINGTON, Tenn. (Oct. 27, 2000)
Citing a recent string of carburetor booster failures, NASCAR has mandated "retaining wires" for the boosters for Sunday's NASCAR Busch Series Grand National Division Sam's Town 250 at Memphis Motorsports Park.
A technical bulletin issued by the NASCAR competition department on Wednesday notified NASCAR Busch Series teams that "their carburetor boosters must be secured by a steel wire not less than 0.025-inch in diameter" for practice, Bud Pole Qualifying and the race.
A booster is a tube within the carburetor, where air and fuel is mixed before being delivered to the engine that assists in fuel flow.
"The wire must be installed in such a manner," the bulletin said, "that in the case of a carburetor booster failure, the carburetor booster would remain suspended in the carburetor without any interference to the operation of the throttle shaft and the throttle plates. The wire must loop through a hole in the booster barrel and then be tied to the respective float bowl vent tube."
NASCAR Busch Series director John Darby Friday said after two booster failures at North Carolina Speedway in Rockingham last weekend there was enough of a pattern to issue the bulletin.
"Booster failures are not totally rare in the sport," Darby said while overseeing the inspection process for 51 entries at Memphis. "But with the number we've had, and with two in one weekend at Rockingham, we decided to issue this bulletin."
Darby said broken boosters impeded the throttle mechanisms' action during both Mike Wallace's crash in Friday's final Happy Hour practice at North Carolina Speedway in the No. 77 Lear Corporation/UAW Ford and Hank Parker Jr.'s crash in the Team Marines Chevrolet in the Sam's Club 200 on Saturday.
It certainly couldn't hurt, with all of these throttles continuing to hang!! :( :(
By Dave Rodman
NASCAR Online
MILLINGTON, Tenn. (Oct. 27, 2000)
Citing a recent string of carburetor booster failures, NASCAR has mandated "retaining wires" for the boosters for Sunday's NASCAR Busch Series Grand National Division Sam's Town 250 at Memphis Motorsports Park.
A technical bulletin issued by the NASCAR competition department on Wednesday notified NASCAR Busch Series teams that "their carburetor boosters must be secured by a steel wire not less than 0.025-inch in diameter" for practice, Bud Pole Qualifying and the race.
A booster is a tube within the carburetor, where air and fuel is mixed before being delivered to the engine that assists in fuel flow.
"The wire must be installed in such a manner," the bulletin said, "that in the case of a carburetor booster failure, the carburetor booster would remain suspended in the carburetor without any interference to the operation of the throttle shaft and the throttle plates. The wire must loop through a hole in the booster barrel and then be tied to the respective float bowl vent tube."
NASCAR Busch Series director John Darby Friday said after two booster failures at North Carolina Speedway in Rockingham last weekend there was enough of a pattern to issue the bulletin.
"Booster failures are not totally rare in the sport," Darby said while overseeing the inspection process for 51 entries at Memphis. "But with the number we've had, and with two in one weekend at Rockingham, we decided to issue this bulletin."
Darby said broken boosters impeded the throttle mechanisms' action during both Mike Wallace's crash in Friday's final Happy Hour practice at North Carolina Speedway in the No. 77 Lear Corporation/UAW Ford and Hank Parker Jr.'s crash in the Team Marines Chevrolet in the Sam's Club 200 on Saturday.
It certainly couldn't hurt, with all of these throttles continuing to hang!! :( :(