OneFasTT997

I have quantum brake ducts to the spindle and the car weighs under 2800lbs.

KNSBrakes

If you have a Billet Superlite caliper you could swap brackets and run a stock sized rotor. That would increase your rotor options considerably and you lose very little rotor diameter.

RX-Ben

how much hp, what tires and did you "season" the rotor before going to town on it?

OneFasTT997

Stock motor, continental slicks, the guys at wilwood said it looked like it had been bedded in properly but to be honest I just ran them. What can I do better there?

drivinhard

Bedding pad material and seasoning the rotor are a bit different. I try to run the rotor through a bunch of mild HC's (street driving is great, if possible) before wailing away on it.

I have seen excellent results with the Spec37 rotors in terms of life.

RX-Ben

Right, and in terms of rotor life, seasoning properly (in my experience), makes a significant difference in terms of life. I'd had good luck with only a single seasoning session consisting of gradually increasing intensity stops from 70mph or so and then letting the whole thing cool down to ambient before lapping with it. More sessions like Mark does are better, but it is tough with a track car - you are either going to blow some sessions bedding pads or need to find a large enough parking lot/private road to do the break-in. Or buy the discs pre-burnished and not have to worry about all this.
I'd suggest getting another set of rings, season them and see how that works out before spending cash on other parts.
I have not found bedding to be all that important and have changed compounds ***** nilly with no noticeable effect. You experience may vary in this department, depending on the compounds you use.

OneFasTT997

Ok, I'll try new rings and season them a bit first. Thanks for the suggestion.

lathrash

I wanted to bump this old thread and see what you guys think of these rotors that I am planning to run this weekend.
Based on some of the other pics in this thread, I'm guessing they are fine, but being a novice to the track, I wanted to get some other opinions.

Would you run these?
(FYI, they are Centric rotors going on a base C6 with Raybestos ST43 pads)

RX-Ben

60% life left in that. Minimum.

brkntrxn

Looks three times better than what I have raced on this year.

lathrash

That's exactly what I wanted to hear. Thanks guys.

VGLNTE1

I'd say it's fine. I've done it, but that crack is pretty bad

argonaut

Run them until they either crack to the edge or you can put a finger nail into the cracks.

ScaryFast

Those are fine.

The time to pitch them is when the crack gets to where the it is on the OP picture

BTW, speaking of ST43 pads, the only time I had issues switching compounds was when I changed from PFC01 to ST41 on the same rotor. They apparently were not compatible, the brakes shuddered worse than anything I've felt.

Other than that, I've switched between compounts a hundred times with no issues.

CHJ In Virginia

TO the OP - Have you considered DBA 5000 series rotors ? I ran these rotors for several years and got on the average 3 weekends or + - 25 sessions on them. I had cooling ducts, Wilwood SL6 calipers and ran Wilwood H pads. IMHO they are the best bang for the buck and I have tried several different combinations over the years.

Larry Bittner

These rotors are dangerous and the cost of the car far outweighs the cost of a rotor. Use the fingernail test and if you nail can feel the crack it is time to replace. Never run a rotor when the cracks go to the edge.