Turning Warped Rotors.

[PewterBird]

All four are warped. The fronts are only a year old, but have been warped for almost as long. The rear are stock, and have possible never been turned.

Im getting sick of all the shakey stops and brake fade.

How effective is turning warped rotors?

[PewterBird]

Im going to do this myslef. The local auto parts store will turn the rotors for rather cheap. And Im going to get new pads and do some paint and decal work on the calipers.

Not to mention I will buy myself a torq wrench and make sure not to **** them up like the shop did.

[Turbo V6 Camaro]

5 think your beter off just getting new ones on ebay for like less then 200 (front and rear) and they will have slots in them
too. just my 2 cents

[Dan Vincent]

I'd say turn the rotors until they're not at their minimum thickness anymore. If they're stock, though, I'd replace them with good ones (Autozone's $40 rotors are really good, I hear).

[AllTheGoodNamesAreGone]

I allways have mine turned.. untill they get to thin..

you are throwing away money otherwise on cheep ebay rotors..

[Jason McCallister]

Torquing all the lugnuts to 100 ft/lbs eliminated all of my "warped rotor" symptoms. This theory was proven when I had new tires mounted and the goofballs used an impact wrench to tighten the lugnuts and all the "warped rotor" symptoms came back. The symptoms disappeared after I loosened/retighted all the lugs to 100 ft/lbs.

[hockeyman]

I will never turn warped rotors, I'll just buy replacements. Some will disagree, but it's my opinion that once they are warped they are junk.

[StudlyCamaro]

ive never had a problem with turning my rotors and the rest of my family's cars that i work on

[zlexiss]

Stoptech has a good paper on warped rotors. They call it mostly a myth, caused by either uneven torque or uneven transfer of friction material to the disc (and state "The driver can feel a 0.0004" deposit or TV on the disc. 0.001" is annoying").

I didn't think that the rotor and pad break-in on installation was that important, but I'll do it with the new brakes I'm putting on in a couple weeks.

I autocrossed on my EBC Greenstuffs the day after I installed them on the stock rotors, beat them to powder autocrossing and road racing, and never had any problem with an uneven pedal.

[PewterBird]

Originally posted by Jason McCallister:
Torquing all the lugnuts to 100 ft/lbs eliminated all of my "warped rotor" symptoms. This theory was proven when I had new tires mounted and the goofballs used an impact wrench to tighten the lugnuts and all the "warped rotor" symptoms came back. The symptoms disappeared after I loosened/retighted all the lugs to 100 ft/lbs.

Ok...I guess my next purchase is going to be a torq wrench.

I know the guy who put on my brakes used an impact gun to put it on. I regret not saying anything now.

I hope that solves the problems.

[zlexiss]

Addendum to my "luck" with never having brake problems with the stock rotors:

1) I'm super anal about torque values, I think a torque wrench is about the most important tool to buy when working on a car. I torque just about _everything_. Hell, I've even torqued my oil drain plug until I learned about the right feel for it. Remember to use them properly - for the click types, smooth tightening motion until it clicks. If you stop to ratchet and it clicks right away when you apply force, back off and try again.

Even the Harbor Freight wrenches are good enough if you treat them well, you can get their 10-150 ft-lb torque wrench, on sale for $10! (4% accuracy seems to be plenty good for me).

2) While I abuse the brakes to no end on the course (ABS is my friend, I hit it often), I treat them like gold in the pits. I'll use them for the last time about 20 feet from my grid spot or pit lane, then just drift in to place. Push the clutch in and cut the engine just before I reach my spot, then gently use the clutch (car in first)to stop the car. Brake pads will stay retracted from the discs, allowing for more even cooling, and no prolonged contact between the hot disc and the pads.

[PewterBird]

Thank your for that link. Thats a great deal. Im picking one up tomarrow.

[Ian]

turning rotors works, its just that the more you turn them, the faster they will warp again.