Why don't they use electric pumps like everybody else? Please don't tell me the new engines don't have a place to mount a mechanical pump,I know that.
2007-03-27 07:12:47 · 7 answers · asked by Anonymous in Sports ➔ Auto Racing ➔ NASCAR
The engines used are not equiped with the "electrtronic sensor systems".The technology used in NASCAR is the basic engines that they have been using since the 1960's.
2007-03-27 16:43:37 · answer #1 · answered by blakree 7 · 0⤊ 0⤋
All The Nextel do not have mechanical fuel pumps driven by the camshaft any more. The new Chevrolet motors do not have a mounting pad any more on the right front side of the block. The fuel pump is driven by the oil dry sump pump through a big speedometer like cable to the top of the fuel cell. The fuel pump itself is inside the fuel cell. It's mounted underneath the large center plate where the gas enters the cell.
The reason for the change is to reduce the chance of fires. The Chevy mechanical pump was mounted behind the right A frame rail. The least little bump in the front end would tear off the fuel pump breaking fuel lines and raw gas flew every everywhere.
2007-03-27 15:07:02 · answer #2 · answered by Country Boy 7 · 0⤊ 1⤋
When they wreck, maybe the engine isn't running but the electrical system may be intact. Thus an electric fuel pump MAY be pumping fuel while the car is wrecked and there are many hot things on a race car that could start a major fire.
2007-03-27 20:06:26 · answer #3 · answered by pei_mer 2 · 0⤊ 2⤋
1. the stock version's aren't running the fuel pump off the cam and this was one way that nascar had to adapt to.
2. this also prevent's the throttle linkage from hanging up which has killed a number of driver's. When the heat build's up against the firewall it distort's the metal which causes it to hang up, even with a triple spring.
It also minimizes the risk of a fire whcih normally occurs because of the placement of the pump in regard's to the frame rail and the rollcage, whcih used to get sheared off in a front end crash. plus it's one less opening in the firewall in which a fire will travel through. even a pin hole will act as a blowtorch when a fire is in the engine compartment and beeing pushed through the firewall when at speed.
2007-03-27 18:39:33 · answer #4 · answered by mbudditch2000 1 · 0⤊ 2⤋
they don't use electric pumps because It's a safety issue, did you watch Mikie splain it last night? in case of a wreck,they don't want it pumping gas out on everything. and they don't have anyway to shut if off like a street car with are their safety intelocks and shutoff switches.
it's in the rear because it's the most protected spot and it will shut off as soon as the rear axle stops turning. It's actually a good idea and will work great as soon as they get the bugs worked out, looks like the cable was a mite to short
2007-03-27 14:59:22 · answer #5 · answered by ClassicMustang 7 · 1⤊ 1⤋
It is an undependable abomination and needs to be replaced.With all the resources at NASCAR's disposal I find it difficult to believe that this is the best they could come up with.
2007-03-27 15:06:00 · answer #6 · answered by shotgun 4 · 2⤊ 0⤋
just another useless nascar rule, 20 fan
2007-03-27 14:17:15 · answer #7 · answered by itsthewill 6 · 1⤊ 0⤋