V1 2-piece brake rotor info

[Tinkles]

Currently I only have the front rotors for the Brembo calipers spec'd out. I am working on spec'ing out the front rotors for the normal calipers.

For Brembo Front Calipers:
This hat from Wilwood: PN#170-12159

Wilwood Disc Brakes

Hat No: 170-12159, hats, rotors, rotor hats, dynamic mount, fixed mount, GT series, HD series, forged billet, starlite, starlite 55, wide 5, wide 5 racing hubs, shallow offset, straight bell, flared bell, truck hats, spun steel, racing hub, aluminum hats, hat offset

www.wilwood.com

These are 5x114.3 hats and would have to be redrilled to 5x110 or 4x100 if you haven't made with switch to 5x114 hubs. I ordered them from Jegs.

The rotors have to be custom made, but the cost isn't too terrible. Wilwood recommended Colman Racing Products.
This is the rotor they recommended to use as the "blank" and the one I went with. PN# B810-1000-150. Just download the spec sheet I attached and send that to them.

Brake Rotor, D30 .81, Custom, Solid Mount

www.colemanracing.com

Colman also offer options for each rotor. I went with drilled, slotted, and balanced.

Brake Rotor, Option, Cross Drill

www.colemanracing.com

Brake Rotor, Gas Vent, Standard Pattern

www.colemanracing.com

Brake Rotor, Option, Balance

www.colemanracing.com

Brake Rotor, Option, Stress Relieve

www.colemanracing.com

Scallop Rotor, O.D. Only

www.colemanracing.com

And lastly you will need some 1/4-20x1" bolts to bolt the rotor to the hat. I chose 18-8 Stainless Steel because that is what the bolts are the Wilwood sells for this application. The only thing I have not worked out are "registration rings" to take up the difference in hub sizes, but that is a simple task for anyone with some fabrication skills.

The whole "are Brembos worth it" has been beat to death, I just want to provide this info to everyone in hopes it makes someone else's build journey easier. I'll update this original post as I figure out the specs for the other rotors.
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I am just gonna toss some links here so I don't lose them for potential rotor blanks and hat(s) for the normal calipers. So just ignore this rest of this post for now.

Brake Rotor, Custom

www.colemanracing.com

Brake Rotor, D30, Mini, Custom, Solid Mount

www.colemanracing.com

Wilwood Disc Brakes

Hat No: 170-12771, hats, rotors, rotor hats, dynamic mount, fixed mount, GT series, HD series, forged billet, starlite, starlite 55, wide 5, wide 5 racing hubs, shallow offset, straight bell, flared bell, truck hats, spun steel, racing hub, aluminum hats, hat offset

www.wilwood.com

 

[ATMironov]

Thanks for the write up!
Out of curiosity, would the OEM Brembo Rotors work? Or did you have to go to a custom two piece set to be able to use the OEM Brembo Calipers?

Thanks!

 

[Tinkles]

I went for the 2-peice rotors for aesthetics and potential unsprung/rotational weight savings.

 

[Rauq]

Comparing the dimensions between Tinkles' rotors and the OEM SS/TC rotors, it does not look like the OEM rotors will work. Diameter is smaller on the OEM rotors, and if I'm looking at hat height correctly, there's more offset on the OEM rotors as well.

 

[ATMironov]

Comparing the dimensions between Tinkles' rotors and the OEM SS/TC rotors, it does not look like the OEM rotors will work. Diameter is smaller on the OEM rotors, and if I'm looking at hat height correctly, there's more offset on the OEM rotors as well.View attachment 19815

I believe this cut sheet is for the Cobalt rear rotors, not the fronts.
This set us uses the Front Cobalt Rotors on the Front of the Goblin.

I did talk with Tinkles a little more and he confirmed that he designed the sizing of his 2 piece rotors on the specs of the OEM rotor.
Although he never had a front rotor to test, It seems like an OEM rotor with the OEM Brembo Calipers should not be a problem on the front of the Goblin.

 

[Rauq]

Well that was dumb, my bad haha. Here's the front rotor, and it does look like it's close enough to what Tinkles put together, although by this point you already know that. At least we can confirm you can't run an OEM SS/TC rear rotor on the front of a Goblin