Silverspeed

I've got some two piece Baer drilled and slotted rotors that have some pad build up that I want to get ground off. Anyone know a place in Houston that has a Blanchard grinder, or that can turn drilled and slotted rotors? I live on the NW side and work in Spring so the closer the better. Thanks for the help.

Wisdom

How about Standard Auto Parts? Can't they turn it down for you?

back 40

They are not exactly close but Monument Chevrolet turned my Z-06 rotors.

Silverspeed

I haven't asked them, but several I have asked can't. You can't turn a drilled and slotted the same way as a regular rotor. Don't really understand why, but that's what I've been told and read.

VCar

Try Corvettes of Houston. They did mine in October.

tommie

what do they have to have to machine drilled/slotted?

Silverspeed

From how I understand it, they either have to be Blanchard ground, or the machine they use to turn them has to use a positive rake.

Nobody in Houston has turned drilled and slotted rotors?

Silverspeed

Just saw this. I actually thought of them today when I drove by their place. Thanks for the help.

tommie

Hmmmm...

I have a Hunter BL505 brake lathe at work.... I have never machined drilled/slotted rotors because I was always told that you could not machine them.....

link to brake lathe

also on the 2nd page of the PDF they say that the brake lathe comes with positive rake bits....

link to pdf...

If the positive rake thing is true... then i should be able to machine them.....

is this true?

Silverspeed

I'm pretty sure it is, I found this in another post:

Their was a GM tech tip that came out in May of 2005 that states.

Cross-drilled brake rotors are being used on the 2005 1/2 Pontiac Grand Prix GXP, and available on the 2005 Chevrolet C6 Corvette and the upcoming Cadillac XLR-V.

If required, these brake rotors can be machined on a lathe in a similar manner to standard rotors.

TIP: When cutting rotors, use positive rake tooling on the lathe. Positive rake tooling requires less cutting pressure, reduces chatter, and improves surface finish. When setting up the brake lathe, be sure to use a vibration dampener/silencer.

Using SI procedures, apply a non-directional finish to the rotor surface after machining by using a sanding block and 150-grit aluminum oxide sandpaper.
- Thanks to Fred Tebbets and Rob Coultes, GM Techlink, May 2005
General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions and know-how to do a job properly and safely. If a condition is described, do not assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See a General Motors dealer servicing your brand of General Motors vehicle for information on whether your vehicle may benefit from the information.
© Copyright General Motors Corporation. All Rights Reserved.

tommie

cool...thanks for the info....just need to try it now.....

tommie

i am willing to try my brake lathe listed above......if anyone has any used rotors they want to use for test subjects.........

i'm on the n/e side of houston...brake lathe is in atascocita.......

tomlink

Check with Frank Coleman at Franks Vettes in Spring on Louetta just west of I-45. I just had my rotors replaced at Franks. I'm sure he could machine yours. He is definitely one of the best Vette mechanics in Houston.

LoneStarFRC

I too have heard some nice things in the past about them and I was about to suggest them. They specialize in Vettes.