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100S ROLLER ROCKER KIT

Comprising of roller rocker arms made from aircraft specification aluminium, offset steel posts, spacers and 100S shaft. These are fully assembled, ready to fit. They are considerably lighter and a higher ratio than standard and therefore not only reduce valve guide wear but also give increased valve lift (1.65:1 theoretical ratio).

A replacement Roller Rocker Shaft for 100S is also available.

100S STEEL ROCKER PEDESTAL AND SPACER SET

These are much stronger than the standard aluminium ones and stop the rocker shaft from flexing and fretting. The spacers hold the rockers firm, stopping them from moving up and down the shaft.

100S Rocker Cover

Finished in crackle black and highlighted with our motif. They are complete with polished Monza quick action filler cap and all fittings. They were designed to give extra clearance for rocker gear, especially on engines with high-lift cams.

VALVES

Made from one-piece forgings in 214N stainless steel with stellite tips and plasma-nitrided. Suitable for both leaded and unleaded fuel. These are made to the lightest design using Buloc type collets, 5/16" diameter stems and original head diameters.

Suitable for our 100S heads.

COLISBRO-BRONZE VALVE GUIDES

These are essential in all engines with gas flowed ports whether aluminium or iron and engines converted to lead-free fuel. With original ½" outside diameter and to suit 5/16" valve stems. 

COMPETITION VALVE SPRING SET

Double spring, set of 8 - to suit our 100S heads.

VALVE SPRING CUP

Hardened steel cup to locate the spring around the guide, suitable for our cylinder heads.

VALVE STEM OIL SEAL

This is top-hat type seal which fit around the top of the valve guide to suit 5/16" diameter valve stems.

Suitable for our 100S cylinder heads.

LIGHTWEIGHT VALVE TOP CAP SET

Aluminium hard anodised light weigh top caps.

To suit our 100S heads.

100S TAPPET SIDE COVER

Flat aluminium plate to clear the tacho drive housing.