2 piece '96 rotor

[NJSHO]

Has anyone ever looked into getting 2 piece rotors made that would work with the '96 upgrade? Trying to cut down on that 16lbs of unsprung weight from the stock rotor. Wilwood has 11.66" rotors ~7 to 8 lbs, but no hats (from what I can tell) that are 5x108.

 

[nc89sho]

eradispeed doesn't make any either, but i belive you can get the 12.5s in a two piece design, and that, IIRC, will also fit under slicers.

 

[AutoSHO]

Since the hats are aluminum, it would be very easy to drill a 2nd pattern onto the hats in the correct 5x108 diameter. Make sure the rotor offset is correct for the 11.6" setup, though.

 

[Shoaz]

eradispeed doesn't make any either, but i belive you can get the 12.5s in a two piece design, and that, IIRC, will also fit under slicers.

The 12.5" are not available from Baer in a two-piece rotor. I get mine from Todd Cook (TCE). They don't fit under the slicers, either.

 

[SHO92]

Eric, I just got my 12.5" kit finally. It is the old SS kit that fits under slicers. Does Todd not make a 2 piece rotor that fits underslicers, and you just not using them, or not at all?

Also what rotor hoops are you using on the 12.5" rotors?

 

[Shoaz]

IIRC, one way that SS got the PBR caliper to fit under the slicer was by grinding generous amounts of material off the top. Not what I'd call a very elegant mod, but, whatever.

I don't know whether there are differences between the SS 12.5" kit and the Baer 12.5", so I don't know whether the rotors are compatible or not.

Todd can supply the hat and the iron rotor to make two-piece rotors for the 12.5" kit. The rotors can be ordered directly from Coleman if you know the dimensions, but if you get the hats from Todd there's not much reason to not get the rotors from him as well.

And to the OP's original point on the hats, Todd's hats are really pretty impressive. I'd be surprised if he doesn't have something that would work for the 96 rotors as well. I need to pull the 12" rotors off the Pumpkin and get two-piece sets for that as well, and I just need to make sure that the hats clear the inside bracket. That'd be the only worry, I'd think.

 

[SHO92]

I was under the same assumptions about the SS 12.5" kit until I actually removed this kit from the car it was on. There was no metal removed from the calipers that I could tell. They were the original "light duty" PBR calipers with the stiffening ribs across the entire caliper, not just the rear.
The SS kit used modified highoffset corvette rotors to space the caliper away from the inner face of the wheel.
The only thing I still don't know is if the newer heavy duty calipers will still clear. I really hope that they will, or I'll have to see what can be done. My last resort will be to buy a set of 16" wheels that will fit.
I am going to take a picture when the weather gets warmer here that shows just how close the rotor is to the lower ball joint. This will be the downside of using this kit on a track car. High temp grease will hopefully alleviate some of the problem.

 

[Shoaz]

Using the lighter calipers might be why they're clearing the slicers without trouble.

FWIW, the Baer kit also uses the Corvette high-offset rotors, and with the HD PBR caliper they don't fit under slicers. If you were to grind off the top of the caliper (not recommended) they might be able to be made to fit.

Lots of other 16" wheels do fit, though. I've tried the ROH Snypers (which I have) and recently acquired a set of Konig 16x7 that fit as well as a set of Borbet 16x7.5 that fit. The Konigs and the Borbets also fit over the 12" Cobra kit on the Pumpkin, so they'll become the track wheels once I grind the rest of the race rubber off the Snypers.

Also, the LCA/ball clearance hasn't been an issue for me. I took the angle grinder to the LCA, though, and the two-piece rotors I get from Todd have a little more clearance with the LCA. Others have had heat trouble with these brakes and the ball joints, but even with all the brake overheating problems I've had the ball joint boots and grease still seem to be fine. YMMV.

 

[Todd TCE]

Not sure I can help on this one.

Reason is that the nose of the caliper on a hat of 8.125" may bump into the OD of the hat. If not...then it's a matter of pick and choose to get the parts right.

Price? Oh, about $500 for the pair.

 

[Shoaz]

Not sure I can help on this one.

Reason is that the nose of the caliper on a hat of 8.125" may bump into the OD of the hat. If not...then it's a matter of pick and choose to get the parts right.

That's exactly what I was wondering about.

At some point I'll pull one of the 12" rotors off the pumpkin and bring one of my old 11.6" rotors down to your place and we can see what works and what doesn't. I'll measure where the caliper bracket reaches near the hat.

 

[Todd TCE]

I'll save you the trip.
I have one rotor in a box now (on ebay) and I can check it before shipping it out. Assuming it sells...but hey, what do you want for $2??

 

[Shoaz]

Let me know what you figure out. I'm still interested in a two-piece set for the 12" kit, too, which is 13" Cobra rotors cut down to 12" (you probably remember all this too well). I suspect that that means that the same hats that work on the 13" Cobra rotors for the Mustangs will work on this assuming the hat clears the caliper/bracket.

 

[Todd TCE]

The width of the rotor suface (pad area) is going to be 2.00"- a tad under. The nose of the caliper, pads, or brackets cannot exceed this width. The height of the hat at this area is about .75 so only the floater bracket can be above this.

Hat no. 170-6378
Requires change to bolt circle holes and *********** of center bore.
Requires custom rotors and hardware.

Ballpark price to do this: $525 per pair.

In the eyes of most folks it's probably not worth it even if it can be done.

 

[Shoaz]

Todd, is what you just mentioned for the 11.6" rotors or the 12"?

 

[Todd TCE]

I thought this was all about a two piece 11.6 rotor. Did I miss something?

* I see. No these numbers were not on 12.0 but would not be hard to figure out. The plan here was all about the 11.6.