The cam support plate in a Twin Cam® engine not only supports the cams, it provides the manifold system used to distribute oil flow to all critical areas of the engine. It also contains oil pressure bypass valve, which is designed to redirect excess oil pressure from the manifold back into the pump. Once excess pressure is relieved, the bypass valve should close and direct all oil flow through the manifold system. Due to a number of issues, the factory parts used in this system typically do not seal (most we test leak 50% or more), causing available oil pressure and volume to fall below acceptable levels designed to protect critical engine components, especially at low RPMs and idle.

Zipper’s Billet Cam Support Plate is CNC-machined from high quality billet aluminum, which unlike the original die-cast plate, does not have inherent casting porosity (air pockets and pits). These porosity pits are highly prevalent in the seat area of the bypass valve; between these casting voids and the irregular shape of the factory bypass valve tip, the system cannot fully seal when the valve closes. When the bypass valve leaks, engine wear accelerates, noise increases and performance suffers, as the engine’s hydraulic components (lifters, cam chain tensioners, piston cooling jets) do not operate as designed. These issues are amplified when performance parts such as cams and heads are installed.

Each of our billet cam plates is blueprinted by our technicians and includes a spec sheet to assure the builder that it meets the specifications developed during our testing and R&D. This process provides increased oil flow throughout the entire engine, especially at idle and low RPMs when the oil pump is producing the least pressure. With this system installed, you can expect a quieter, smoother and longer-lasting engine!

– Stronger Billet Plate Design with Bronze Bushings, Free of Porosity with Added Structural Integrity
– Hand-Sealed, Lapped and Pressure Tested Oil Pressure Bypass Valve
– 50% or Greater Oil Flow at idle over Plates with Leaking Bypass Valves
– More Stable Oil Pressure at all RPM’s, and all Temperature Ranges
– Prevents Wear on Critical, High Pressure Engine Components, Lengthening Engine Life
– Models For ’99-’06 Engines Set Up for Hydraulic Cam Chain Tensioners and 2007+style Oil Pump
– Compatible with Zipper’s Dual Piston Cam Chain Tensioners
– A Must for All Performance Engine Builds

Weight 1 lbs

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