Baer Track Kit (interesting development):
I can't believe I've owned this car for 20 years, and never really figure this out. I basically drove it every day for about 3 years, and even tracked it a couple times without ever needing to replace the rotors. I have a more experienced eye for these things than I did back in '07 when I radically changed the combo.
Anyways, I couldn't tell you exactly what year the Baer kit was installed on Father Time, as it happened before I purchased the car in '04, but I always thought it was the "Baer Brakes Track Kit," and any research I still do points to the fronts being equivalent to SN-95 Cobra 13" discs. However, that turns out to be wrong in Father Time's case. I suspect, and perhaps a phone call to Baer will clarify, that their original kits for foxes came with 88-94 C4 Corvette/Gen4 F-body Brakes all the way around. My theory is that they were not just the 12" rears, but also the 13" fronts fronts with deeper hats (not sure about my terminology there, but see pics). Baer was definitely redrilling the rear 12 rotors for 4.5" lug-spacing (thinking GM is 4.75").
When I sent the car off for paint, I asked Manir to paint the calipers, too. And, I picked up a complete old school Baer Track Kit along the way. So, on went the "new" calipers, which were cleaner than my old ones. And, for good measure I gave him some Cobra fronts, which obviously didn't work. Check this out:
And look at the cut and rewelded tabs to mount the calipers deeper on this spindle:
The good news is that there's not an urgent need, as there's plenty of rotor left, and they frankly appear thicker, albeit with narrower veins.
Swept Area:
One thing I’ve never liked is the wear pattern on these rotors. A lot of the inner radius is untouched. Now I can see why: looking at the top caliper tab, there’s almost no room to bring the caliper inward without cutting dangerously deep into the spindle. On the bottom, I might be able to have a fabricator reweld the tab to shift the caliper inboard—but then I’d risk putting the pad at an angle relative to the rotor, with the top sticking further out than the bottom. I’d need to take a closer look to see if the caliper itself has room for that adjustment. And, from the top-looking-down picture, you can see that there really isn't any room left for the rotor to go further into the caliper, regardless.
Another option might be to swap to stock SN95 spindles. That way, all my cars would share the same front rotors, and with
Father Time likely never being too far from the trailer, I’m not overly worried about being able to do emergency swaps from a parts store.
Here are a couple extra pics I took for good measure: