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mtenderenda
05-10-2010, 12:37 PM
Does anyone know if it is possible to resurface cross drilled rotors???? Feels like it is time to resurface my rotors, I have the KVR two piece.
ctrlraven
05-10-2010, 12:52 PM
Yes it is possible if you find a shop that has the right milling bit and will actually do them but they can only shave off just a hair of it and could possibly make them a lot weaker as to warp again quicker.
Zack
05-10-2010, 12:53 PM
Does anyone know if it is possible to resurface cross drilled rotors???? Feels like it is time to resurface my rotors, I have the KVR two piece.

1 million percent OK to turn 2-piece rotors.

You may encounter some 'resistance' finding someone to do it though.
mtenderenda
05-10-2010, 01:01 PM
i am already experiencing the resistance. I've gone to a number of high performance shops giving me the same answer. "Nope it can't be done."
ctrlraven
05-10-2010, 01:26 PM
If I was still over seeing one of my old client's he could turn them no problem. He turned my EBC dimpled/sloted MM rotors and foxbody KVR cross drilled rotors with great results.
illwood
05-17-2010, 05:53 PM
1 million percent OK to turn 2-piece rotors.

You may encounter some 'resistance' finding someone to do it though.
Zack's right, the rotors are best to be turned on a brake lathe rather than milled on, well, a milling machine. The brake lathe has 2 cutting tools that face both the inside and the outside of the rotor at the same time to prevent distortion in the rotor from the part bending from just one tool without support during the cut.
Phrog_gunner
05-17-2010, 06:12 PM
The brake lathe has 2 cutting tools that face both the inside and the outside of the rotor at the same time to prevent distortion in the rotor from the part bending from just one tool without support during the cut.

The little arms that hold the bits on a brake lathe (which the adjustments are only finger tight) are in no way strong enough to bend or distort a brake rotor. If we were turning a rotor and one side was done before the other, we would just cut the one remaining side, there is no sense in taking material off of one side just because the other side's finish isn't correct yet.
illwood
05-17-2010, 06:43 PM
The little arms that hold the bits on a brake lathe (which the adjustments are only finger tight) are in no way strong enough to bend or distort a brake rotor. If we were turning a rotor and one side was done before the other, we would just cut the one remaining side, there is no sense in taking material off of one side just because the other side's finish isn't correct yet.

Well, there is enough force to allow the bit to cut the rotor. How much are you taking off a pass? Ten thousands, twenty thousandths?

My main intent was to discourage a milled rotor. I've seen it attempted and fail.