When a car comes to the turns, I noticed flames coming from the rear lower side by tires. What causes that? I heard brakes and another told me engine back pressure. Whos right?
2007-02-27 02:45:02 · 17 answers · asked by 24DupontWatcher 3 in Sports ➔ Auto Racing ➔ NASCAR
Most times it's unburned fuel igniting inside the exhaust pipes. When they come off the throttle a bit before entering the turn, the resulting change in r.p.m. reduces the demand for fuel mixture that is already on its way to the cylinders and some of it gets blown out with the exhaust stroke. The pipes are hot enough to cause it to ignite. Ergo; flames.
2007-02-27 03:01:35 · answer #1 · answered by lurned1 3 · 2⤊ 0⤋
As stated numerous times by alot of people it is the unburnt fuel igniting through the exhaust system.It is not the car bottoming out on the track.When the car bottoms out on the track all you see is sparks from metal hitting the track.The bottom of the car will hit the track causing the sparks to shower out the back.It is the same as if the right side of the car hits the wall.You see sparks showering off the side.As stated by others the correct answer is unburnt fuel through the exhaust system.
2007-03-03 04:25:53 · answer #2 · answered by firerescuemo 3 · 0⤊ 0⤋
It is unburned fuel making into the exhaust system. The fact you saw it so prevalent in the California is that they switched to Unleaded fuel, and the engine tuners have to increase the amount of fuel that is jetted into the cylinders to have the same amount of horsepower, causing more excess fuel when lifting off the gas. The tuners will eventually get the jetting to a science so they have better fuel mileage and you will see less and less flames from the exhaust.
2007-02-27 13:58:44 · answer #3 · answered by gsxrken2002 2 · 1⤊ 0⤋
blow by fuel that ignites from the heat of the tailpipes and sometimes yes the is fire after the brake hold cherry red for an extended length of time and even sometimes sparks so thick they give an illusion of flame from a part of the frame or chassis that is too low to make clearance at intervals on the track.
2007-03-03 06:22:04 · answer #4 · answered by Dottie J 2 · 0⤊ 0⤋
Cars do something called bottom out, after that, sparks fly, and then after that, flames come out of the exhaust pipes on the side of the car
2007-03-02 20:18:04 · answer #5 · answered by chowda99@sbcglobal.net 3 · 0⤊ 0⤋
it is un burnt fuel burning in the headers. when you are driving flat out then let off the gas there is some un burnt fuel in the carb that flows into the headers on the exhaust stroke. this gets burnt by the hot headers thats why you see flames comming out of the pipes. whatch a night race you will see this all the time.
2007-02-27 11:03:17 · answer #6 · answered by Anonymous · 2⤊ 0⤋
It is the unburnt fuel exiting the exhaust pipes and since those pipes can get almost burning red it starts a fire.
2007-02-27 12:36:15 · answer #7 · answered by sexypanty07 2 · 0⤊ 0⤋
neither its access fuel burning out of the tail pipes which on the cup cars are on the side of the car
2007-02-28 19:19:31 · answer #8 · answered by Billy S 6 · 0⤊ 0⤋
Unburnt fuel!
2007-03-01 19:41:32 · answer #9 · answered by diecast_heart 3 · 0⤊ 0⤋
It's unburned fuel. Since racecar mufflers don't have spark arrestors you see flames.
2007-02-27 20:00:57 · answer #10 · answered by Anonymous · 0⤊ 0⤋