Description
Cosworth CNC ported cylinder heads feature dyno tested and flow bench proven ports, engineered for maximum real world power. Each new cylinder head is ported on a 5 axis machine to ensure consistency and perfect port shape every time. Additionally, larger intake (+1mm) and exhaust valves (+1mm) are utilized to help increase flow. Cosworth CNC ported Big Valve cylinder heads come complete with a performance valve job, hi rev (max 10,500rpm) valve springs with titanium retainers and are ready to install. Perfect for big turbo applications. A flow chart for the modified head is available by downloading the technical document on the left.
Specification
# CNC Ported/machine finished port – New OE Castings
# Hand blended finish work
# Intake – 26% Increased Flow (max)
# Exhaust – 18% Increased Flow (max)
# 4-angle Inlet Valve job
# 3-angle & radiused Exhaust Valve job
# Valves are lapped
# Back-Cut Inlet Valves
# Heads are Ultra Sonic cleaned prior to assembly
# Heads are Serialized and sport a machined Cosworth logo
# +1mm Stainless Steel Intake Valves (1800 degrees max.)
# +1mm Inconel Exhaust Valves (2400 degrees max.)
# Performance Valve Springs
# Titanium Retainers
# Hardened Steel Spring Platforms
# Reshaped combustion chamber
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