are brake torque burnouts bad for your tranny?


thanks

 

Depends. It's not much different than a water burnout at the dragstrip. When done properly, there's no damage.

Start in first gear then once the wheels start spinning, shift to second. Before lifting off the gas, shift to third then don't let the gas off really quick. It's that sudden shock when the wheels catch dry pavement that will do the most damage.

Doing a burnout with street tires does nothing for traction anywhay. All you're doing is making smoke and wearing good rubber off. Street tires don't have the traction oils in the rubber and are not designed to be heated up. The tire manufacturers just love you since you'll be always buying new tires.

 

YES.

Bad for the trans. REALLY REALLY bad for the rear brakes.

 

And bad for the TC as well. But if done in the above description, I don't see the problem. It's when you just sit there and hold the brakes, this causes a lot of heat in the TC.

 

oh i have a 700r4 and usually put in third which to my knowledge is equal to D on normal cars

thanks for the replies

 

Whats the best way to do a burn with an automatic? The same way, manually shifting the automatic gears??

 

Get into high gear, 1:1, as soon as possible. If you just leave it in drive it should just shift automatically anyway. It's when in first or second gear that does the most damage when you quickly let off the gas or shock the driveline when you hit dry pavement.

And yes it does build a lot of heat in the torque converter. Heat kills a tranny more than any other failure. Invest in an aftermarket cooler for any car.

It also wears out your rear brakes. Having the brakes applied and doing a burnout will really heat up the rear brakes. Both drum and disk brakes are creating a lot of friction. After doing a burnout you may lose rear braking due to brake fade.

Drag cars like mine use a line lock. This allows you to apply the brakes then electrically through a solinoid, hold the front brakes and release the rear. Then when a burnout is done the rear brakes are not holding. When I cross the finish line at close to 120 mph I want all 4 brakes to slow me down not just the fronts.