KIBBLEWHITE 20-23450 961975 KPMI ROCKER SHIM SPRING KIT HT STEEL 0.675" LIFT

The KPMI® Rocker Shim Conversion Spring Kit for the Milwaukee-8 utilizes a dual spring system and a lightweight retainer that houses a standard Ø9.5mm hardened steel shim. The rocker arm rides directly on the shim surface and the 9.5mm diameter significantly increases the allowable rocker wipe area. This increase in wipe area provides the ability to utilize larger lift cams, that previously were unable trun on a 6mm valve stem.
The system is intended to be adjustable and allows for at least 0.060” of spring shims, tailoring the pressures and lift capacity to meet the engine buier’s needs. Additionally, the rocker shim thickness can be varied to adjust effective stem protrusion.
When larger camshafts are used, and valvetrain acceleration values increase KPMI® strongly recommends running titanium valves for maximum performance.

IMPORTANT NOTE:
Modification Necessary:
To max shim contact in the retainer, KPMI recommends “tipping” (shortening the valve tip). See KPMI® installation instructions for more info.
Stem Protrusion:
There is anticipated to be a rough 0.100” increase in effective stem protrusion with the use of the shim.
Valve Guide Compatibility:
This system must be run with KPMI’s newer style M8 valve guides, which are shortened for 0.675” valve lift. See KPMI® installation instructions for more info.

Manufacturer Part #: 20-23450

Prop 65 WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or reproductive harm. For more information go to www.P65Warnings.ca.gov.