Drag Illustrated Issue 134, July 2018 | Page 115

More RPM! Manley’s Valve Train Components allow your engine to achieve its maximum performance potential. Weight is the enemy offers TensileMax steel retainers that are nearly as light as standard titanium retainers but much harder (Rc 52-54) for improved wear. H-13 tool steel retainers, which Rockwell at 56, are 33% lighter than standard 10° steel retainers. Titanium Saves Weight Compact Dual Valve Springs Among other things, it hampers valve train kinetics and has an impact on reliability. That’s why Manley’s engineering team strives to make the company’s products as light as possible —without sacrificing durability. Manley one-piece forged titanium valves are preferred by leading engine builders and have an outstanding track record of reliability. And Manley makes a good thing even better through offering custom hollow stem