Cylinder Head Restoration

Materials

bullet

Guides: Custom machined Ampco 45. Valve guide ID and OD diameters are concentric with .0005" (.013mm). Shown below are custom R69/R69S and R50/R60 valve guides.

bullet

Valve seats: Hi-Chrome SAE10b/5 globular perlite and tempered martensite with a uniform dispersion of chromium carbides.

bullet

Factory BMW valves, springs, collars and retainers. Alternative German high quality replacement parts are used when applicable.

Process

bullet

Heads are degreased and disassembled.

bullet

The heads are media blasted.

bullet

All critical dimensions and components are inspected.

bullet

Valves are ground on a Kwik-Way valve grinder which has a spindle chuck TIR at .0005" (.013mm) or less.

bullet

Valve bores (ID & OD) are machined using a precision Sunnen honing machine and tooling.

bullet

Seats features (both OD and valve interface angles) are processed with all carbide tooling.

 

E-mail for more info

Index Page