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The cam follower, or tappet, is used in the inlet guide block where there is no provision for an oil passage. The ‘R’ radius offers a slightly flatter profile for increased valve opening duration and is often paired with the E3134 profile camshaft. New production camshaft follower from Hepolite. This listing is for (1) cam follower.
The genuine Hepolite precision machined tappet features a hardened surface for increased durability. Original factory specification for 1966-1972 T120 engines. The ‘R’ designation refers to the 1-1/8″ radius and is often called for when fitting aftermarket performance camshafts in the B-range Triumph engine. Made in the UK.
In almost all instances, when new camshafts are being installed, the manufacturer will specify the replacement of tappets showing any wear whatsoever. The R-radius inlet tappets can be used in the exhaust guide blocks on pre-unit engines with magneto ignition, as well as early unit-construction engines when mated with the appropriate camshafts.
The tappets require pre-lubrication with assembly lube when fitted to the guide block. It is recommended to secure the stems in the guide block with a zip tie or strong rubber band to prevent them from falling out into the engine cavity during installation of the cylinder barrel onto the crankcase.