Essex World Radi-Cal II front brake system installation guide for Porsche 911, Boxster and Cayman, covering tools, installation steps and torque values.
This installation guide from Essex Parts Services covers fitting the World Radi-Cal II front brake system to Porsche 911, Boxster and Cayman models (version 1.0, 20.99.00006). It opens with a warranty disclaimer and notes on wheel clearance, brake noise and vibration, and the finish of the anodized aluminum caliper, bracket and hat, followed by a warning that the kits are for off-road use only.
The document lists the contents of the two boxes, the required tools and a note on brake ducts, then walks through the installation in numbered steps: washing the discs, lifting the car, detaching the hard line, removing the OE caliper and disc, fitting the Essex caliper bracket, the AP Racing J Hook disc and the CP9562 caliper, installing the Spiegler stainless brake line and pads, and repeating the steps on the other side. Torque values are given for the bracket bolts, caliper bolts, banjo bolt and pad retention bolts.
| Caliper bracket to upright torque | 74 lb.-ft. |
|---|---|
| Caliper to bracket torque | 40 lb-ft. |
| Banjo bolt torque at caliper | 18-22 ft.-lbs. |
| Pad retention bolt torque | 11 ft/lbs (15Nm) |
| Recommended brake fluid | AP Racing DOT5.1 |
| Torque wrench range required | 10-105 lb.-ft. |
The guide lists a torque wrench capable of 10-105 lb.-ft., a breaker bar, sockets including 19mm, 10mm hex and 6mm hex, line wrenches, pliers, a punch, rags and brake fluid.
Essex recommends AP Racing DOT5.1, and the tool list calls for 2 or 3 500ml bottles of brake fluid.
The supplied hex head bolts attaching the caliper bracket to the upright are torqued to 74 lb.-ft. with red Loctite 271 applied.
No. The guide states that Essex brake kits are for off-road use only and the components are not designed for use on public roads.