What are flat tappet and roller tappet lifters?
Flat tappets (lifters) have a flat face that rides against the cam lobe. In reality the face has a slight crown (convex) to help the lifter spin or rotate when the cam lobe moves past it. These are available in both hydraulic and mechanical. All Scorpion Racing Products flat tappets are made in the U.S.A. from a proprietary formula of hardenable cast iron for wear resistance. The face of the lifter has a high concentration of microscopic carbides and is mirror finished for durability in both street and high load race engines. Scorpion Racing Products mechanical flat lifters are available with and without a.015″ oil hole in the face. Scorpion Racing Products hydraulic flat lifters are available with three different types of hydraulic units, race, short travel and variable duration. Therace lifter has the travel and bleed rate of an “anti-pump up” race tappet, the short travel has .050 of hydraulic travel and a custom bleed rate for higher rpm. The variable duration lifter has a faster b
