C5 Z06 Brake Conversion with Stock Sawblades

[Dynomite]

I have a 90' and 91' with identical Wilwood/C5 Z06 Brake Conversions as shown. A-Molds fit this conversion without any issues other than the redistribution of wheel weights. See item # 9 of ZR-1 (90' and 91') Wilwood Rotors and C4 to C5-Z06 Conversion

The question came up regarding Stock Sawblades fitting this Wilwood/C5 Z06 Brake Conversion.



I measured a stock Sawblade wheel and found the inside diameter is about identical to A-Molds at the two critical locations of the Calipers (see 13B below).

I also measured the spoke Offset from the Hub of a Stock sawblade and found it to be .75 inch as compared to 1 inch for A-Molds (see 13A below). When installing the Sawbade wheel the spoke of the Sawblade JUST came into contact with the C5 Z06 Caliper as shown. In other words I would say the offset of the stock Sawblade wheel is 1/4 inch short of what would be required (3/4 inch vrs 1 inch).

It would be easy to place a 1/4 inch spacer on the Hat of the Wilwood Rotor but you would then be 1/4 inch shorter on the stud length for the wheel nuts which you end up with 1/4 inch less than the bit over 1/2 inch threaded contact now (as I view my Hubs with the Wilwood Rotors installed with Hats).



The inner wheel Clearance of this brake setup using A-Molds was identical (90' and 91'). For OTHER wheels (other than A-Molds and Sawblades) the information below will apply.
See item # 13A and 13B of ZR-1 (90' and 91') Wilwood Rotors and C4 to C5-Z06 Conversion for do it your self wheel measurements to determine if your wheels will fit this Brake Set Up. Copied here

13. Wheel Dimensions that will fit on this brake Set-Up.
This would be the limit of a wheel inner dimensions which would fit/clear this Brake Caliper Set-UP.
Rather than try to measure the offset and the maximum radius of the Caliper it was easier just to measure the A-Mold wheel which just clears the spokes as well as the Caliper outer radius as shown below. I would say this is Minimum Clearance. The clearances of this Set-Up is on the order of 1/4 inch on spoke and 1/8 inch on wheel inner radius so very close. There is slop in the Caliper pins riding in the bracket so this clearance is definitely required.



A. Spoke Offset.
The Spoke Offset from hub surface is 1 inch at the widest part (outer edge) of the Caliper.
The wheel weights are located on the inner rim and single stacked.



B. Wheel inner diameter.
Two Inner wheel diameters are shown. The one on the left is the wheel diameter at the hub surface which is 15.25 inches (this would coincide with the the radius of the outer part of the caliper) . The Second wheel diameter on right is the wheel diameter at 4.5 inches up from the spoke where the inner (larger radius) part of the caliper which is larger radius sits which dimension is 15.75 inches.