Rocker shaft
Sprite / Midget: Midget 1500 (1974-79)
Triumph: Spitfire Mk3, Mk4 and 1500 (1967-1980) • Dolomite 1300 and 1500 (1976-80) • Herald 13/60 (1967-71)
roller tip type, with needle bearings, valve lift: 1.55:1
Rocker shaft whose rocker work with increased stroke. Allows better filling of the combustion chamber than with the standard camshaft.
If high ratio rocker kits will be fitted always check valve clearance to block and pistons, may be additional machining is required. Also check the lift capabilities of the valve springs for coil binding. Alternatively fitting of a cam with lower valve lift is required.
Alternative products