Rollmaster technical information

Vernier Adjustable Timing Chain Sets

Gold Vernier timing sets are an upgrade of our Gold Series timing sets. The cam sprocket is produced in two parts and allows the outer sprocket section to move separately and independently to the inner hub by way of elongated slots, allowing infinite adjustment to cam timing, just by positioning the camshaft to the required degrees then locking the socket head screws around the perimeter which clamps the entire unit together as one solid cam sprocket. Vernier sprockets tend to be a little heavier than our standard sets as more material is used to aid the threaded section needed for the inner hub. All vernier sets use our regular crank sprockets with single crank keyway only, and both cam and crank sprockets have been nitrided. Torrington one-piece thrust bearings are used on all vernier sets where applicable; otherwise brass thrust washers are fitted. Of course Iwis chain is used on all vernier sets. Installation is a breeze with vernier sets as the entire set can be installed in the same manner as any other timing set. By leaving the locking screws on the cam wheel loose you can move the camshaft independently to the crankshaft and timing set without moving anything else. You just dial in your camshaft using the vernier scale and then tighten it all up.

Materials used for All Timing Sets

Crank Sprockets: K1045 Billet steel bar unless nominated otherwise. Cam Sprockets: K1045 Billet steel bar. Nitrided sets are listed with independent part numbers.

Timing Chains

Our Gold & Red Label timing sets including Vernier timing sets are fitted exclusively with Rollmaster/Iwis quality Pro Series Timing Chain. All chains are 3/8" pitch British Standard 1/4" full roller Single and Double Row chains. Please Note: Iwis chains are not made in varying pitch lengths to accommodate line bore engines.

AMC Rambler

BMC

Buick

Chevrolet Big Block

Chevrolet LS Series

Chevrolet Merlin

Chevrolet Small Block

Chevrolet

Chrysler

Chrysler Big Block

Ford Australian & British

Ford Big Block

Ford Cleveland

Ford Windsor

Holden

Oldsmobile

Pontiac

Rover

General

Chevrolet Small Block

Ford Windsor

Ford Cleveland

Ford

Holden

BMC

Chevrolet Small Block

Chevrolet

Chevrolet Big Block

Chrysler Small Block

Ford Cleveland

Ford Modular

Ford Windsor

Ford Local

Holden

Nissan

AMC Rambler V8

Chevrolet LS Series

Chevrolet Small Block

Chevrolet Small Block TPI

Chevrolet Big Block

Chevrolet Big Block Gen 6

Chrysler Big Block

Ford Big Block

Ford Cleveland

Ford Windsor