[Dr K]

With the wear all on 1 side like you had, and despite the lack of spacer, I think you need to rebuild the calipers to make sure both sides work evenly.

[Scuba]

Originally Posted by Dr K

With the wear all on 1 side like you had, and despite the lack of spacer, I think you need to rebuild the calipers to make sure both sides work evenly.

Yeah...It's been looming, but I've been hoping against hope that something magical would happen so I could avoid the rebuild...

What's the consensus on turning down the driver's side rotor, too, and continuing to use then with a new set of pads? (With correct spacers and a caliper rebuild)

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[BlackTalon]

Consensus is vented rotors should not be turned.

[Vicegrip]

Originally Posted by Scuba

Yeah...It's been looming, but I've been hoping against hope that something magical would happen so I could avoid the rebuild...

What's the consensus on turning down the driver's side rotor, too, and continuing to use then with a new set of pads? (With correct spacers and a caliper rebuild)

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I vote No. Rebuild all 4 corners, replace both front rotors and anything else that looks worn. Wheel bearings are cheap and a spun bearing can kill a hub and spindle.

Entire PPI suspect if something like this slipped through. This is the kind of thing that is spotted 20 seconds after the lift came to a stop. More weekends get messed up over brakes/breaks. Not the place to skimp in maintenance or money. They are accelerated wear item on track cars. Wheel bearings and 1/2 shafts are as well.

[smdubovsky]

Porsche OEM 930 two pc rotors are $500 each. $200 is totally reasonable for a decent rotor. They should last a very long time on a 911.

Edit: There are aftermarket 930 replacement rotors avail now for significantly less. Might be cheaper then the Coleman. But you'll have to do your homework to make sure they fit w/ the calipers/adapters you already have. Its somewhat odd that the hat on yours wasn't machined to take an off-the-shelf coleman rotor. Its what most do. So leaves me wondering if they adapters you have are one-offs.

[Scuba]

Originally Posted by Vicegrip

I vote No. Rebuild all 4 corners, replace both front rotors and anything else that looks worn. Wheel bearings are cheap and a spun bearing can kill a hub and spindle.

I found a receipt for a shop to do the brake job with "customer supplied rotors". Don't know if that was the first time he'd put Coleman's on or not, but conspicuously missing from the receipt is "customer supplied spacers"...

After seeing the passenger side, I'd committed to totally rebuilding the front, on the hope that a mistake had just been isolated to that corner. One i pulled the driver's side and saw the same lack of spacer and the beginnings of the same scoring, I knew I needed to get into the rears, too. I'm afraid of what I'll find there - they're 944 turbo front calipers, apparently.

Originally Posted by Vicegrip

Entire PPI suspect if something like this slipped through. This is the kind of thing that is spotted 20 seconds after the lift came to a stop.

The PO recommended the shop, which I initially took with a grain of salt, until I checked the website.

http://www.kmwmotorsports.com/

That struck me as someone who knows exactly what they're looking at with Porsche racecars.

The PPI paperwork says "front pads low" - and clearly the only pad with real wear is that front inside one. Which is why I almost didn't check the passenger side before taking it to Dominion - I figured he was recommending new pads before a full race weekend, and I could get by with just a few sessions of shakedown without worrying. Good thing I checked...

Originally Posted by smdubovsky

There are aftermarket 930 replacement rotors avail now for significantly less. Might be cheaper then the Coleman. But you'll have to do your homework to make sure they fit w/ the calipers/adapters you already have. Its somewhat odd that the hat on yours wasn't machined to take an off-the-shelf coleman rotor. Its what most do. So leaves me wondering if they adapters you have are one-offs.

Thanks, I'll check into hat + rotor combinations to get off the custom order friction rings - that just seems excessive.

Thanks to everybody for all the advice!

[Dr K]

Kurt (VG) is more conservative than I am. He put his race seat about a foot in from the door/cage for safety. But I agree with him 100% here. Were this my car, I would do one of 3 things:

1. Take the car to Intersport and ask Charley to sort this mess out correctly
2. Convert back to stock brakes. Plenty of stopping power with the correct pads. Stock rotors are quite affordable.
3. Take your time, rebuild all 4 calipers, find out about the spacers and rotors and replace them, replace the bearings (VG is very right about replacing a $20 bearing rather than a $600 (plus labor) strut, esp. since they really should be replaced in pairs), and kindly ask another expert (shop or certain members of Dorkiphus) to look it over for you after you've satisfied yourself that it looks right.

Good luck. Sorry for the headache but this is something that can be fixed without much difficulty.

[}{arlequin]

price of turned rotors vs totaled car when disc explodes?

[roundel]

What is the big deal about brakes on track cars? All they do is slow you down.

[Lupin..the..3rd]

Originally Posted by Dr K

With the wear all on 1 side like you had, and despite the lack of spacer, I think you need to rebuild the calipers to make sure both sides work evenly.

Flip them side to side to even out the wear. Same as flipping tires on the rim.