Sunbeam Alpine - Performance Roller Rocker Set

Fits the following:  all engines 1600cc to 1725cc with Alloy Heads   Hillman Hunter - All models with Alloy Heads Hillman Super Minx - Series 1,2,3,4 Humbler Sceptre - Mk1, Mk2, Mk3 Singer Vogue - Series 1,2,3,4, and New Vogue Singer Gazelle - Series 3c,4,5,6,7, and New Gazelle Sunbeam Alpine - Series 1,2,3,4,5 Sunbeam Rapier - Series 2,3,4,5 with Alloy Heads Set of 8 Rockers that slide right on to your existing stock rocker shaft Our Roller Rockers reduce friction and wear = increased horsepower. Less side-loading on the valve. Greater Valve Life. Slightly more aggressive that the stock ratio (1.5:1 vs 1.4:1), but still very streetable. Reduces valve chatter. Ratios are more accurate from rocker to rocker (vs stock rocker arms), making the lift more even across all of the cylinders. Can be used on your stock shaft (inspect to make sure its in good condition). Valve clearance remains set to standard. Special Features: Bronze bearing (pinned to prevent spinning) Hardened Roller Tips are precision machined for concentricity with a smooth mirror finish. Trunion features a counter bore for better polylock engagement. (translation:  the central pivot piece of the rocker arm has a recessed pocket carved into the top of it, which allows the adjusting nut to sit deeper and grab more threads on the mounting stud so it won't vibrate loose. Anodized Aluminum body. Hand-assembled cages with 27 needles for superior friction reduction. Internal roller and pushrod oiling system Rocker sets consist of rocker arms only (you re-use your OEM adjusters) FREE SHIPPING FOR ALL U.S. AND PUERTO RICO ORDERS !! Technical: Made from a selection of 9 different 2024-T3511 high Quality aluminum extrusions designed specifically for Classic Car Performance, Inc.  We are proud to say that all components, materials, and resources are sourced in the U.S. Classic Car Performance's pins are larger than the offshore competition, offering increased strength and are knurled to prevent spinning. Centerless ground journals are counter-bored and induction annealed for maximum strength. Heat treated ends are riveted to prevent backing out. Heavy Duty Roller Bearing wall thickness provide maximum strength. Lifetime Guarantee against manufacturer defect.