The older style standard shims will not hold up to the extreme spring pressures and high RPM found in racing engines being built today. COMP Cams offers a simple but effective solution to this problem - a thin, hardened steel alloy seat which will not only protect the head and shim but also locate and hold the spring in place. Previously, this part has been available only in a cup form with the retaining portion being on the outside of the part. This required that the head be machined a great deal to accept this cup so COMP now offers an I.D. locator with the locating shoulder on the inside, as well as the spring cup. Many sizes are available to locate from the inside or outside diameter.
Seat Spacer Set 100 for BBC - 1.568" OD, .623" ID, .300" Thick
Locator; Seat; Cup; Spring Seat; Spring Cup
4779-100 - Rotator Eliminator, EB CB EXH
Seats BBC 1.568" OD .623" ID .300" Thick
COMP Cams Rotator Eliminator Eb CB Exh
See 4779-1 for a single seat spacer.
Rotator Eliminator, EB CB EXH
Engine Valve Rotator
None
