Cosworth CNC Ported Big Valve Cylinder Head EVO6/8 KK3672

Description

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