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For over 40 years; Cosworth's been leader in innovative multi valve cylinder head design both racing high performance production cars. Cosworth Ported Valve Cylinder head range is latest advancement. Modified from OE cylinder head castings; substantial flow improvements upgraded valve train components offer superior performance your high performance engine.
Each original cylinder head design is carefully evaluated tested to establish improvements required to meet target performance level. Hours of testing flow bench validation used to determine best advanced port design yielding maximum usable power response. However; there is more to cylinder head design than just maximum flow. It is critical that port velocits maintained to ensure drivability valve train components matched to guarantee reliable performance. Once of these factors have been tested validated; final port contour is digitized. Using digitized program; we then reshape both intake exhaust ports using axis mill producing an accurate consistent port shape every time. In addition to reshaping enlarging intake exhaust ports; most Valve Cylinder heads feature a re-shaped combustion chamber to un-shroud valves increasing flow performance. After machining; each cylinder head receives a multiangle high performance valve on precision valve seat cutter. Then each cylinder head is ultrasonically; cleaned; serialized then hand assembled with select high performance valve train components; ready to install on your engine.
Key Features
All OE Castings
Enlarged Intake Exhaust ports
Large diameter stainless steel intake valves
Large diameter Inconel exhaust valves
Hi Rev; Dual valve springs
Titanium Retainers
Hardened Steel spring platforms
Reshaped combustion chamber on most applications
Flow bench proven design
Dyno tested
Machined Cosworth Logo
Precision Multi angle valve job
Pre-assembled; ready to install
Machined port bore finish
Knife edge port divider Learn More

The piston is of most important components within engine. It be subjected to directional change up to times every second must withstand acceleration forces of 8500gs. Cosworth high performance forged pistons designed engineered to withstand this type of punishment still perform. Cosworth's pistons manufactured using same methods as Formula pistons include features such anti scuff skirt coating; ultra-strong pins; polished and patented antidetonation bands. Additionally; each application uses a unique forging to minimize weight ensure strongest possible piston design.
Key Features
Unique forgings each application
Xylan anti scuff skirt coating
Polished tops (reduces carbon build up relieves stress)
Manufactured from proprietary alloy (CosAl 010)
Ultra strong pin
Patented anti-detonation bands Learn More

Large diameter valves essential improved flow. Cosworth high performance intake valves produced from high quality stainless steel maximum durability. Exhaust valves machined from Inconel for
high temperature (2400 F) reliability. Each valve features swirl polished back improved flow dished face additional weight reduction. Cosworth high performance valves compatible with Cosworth Ultra
Race Valve Spring kits. Learn More

Large diameter valves essential improved flow. Cosworth high performance intake valves produced from high quality stainless steel maximum durability. Exhaust valves machined from Inconel for
high temperature (2400 F) reliability. Each valve features swirl polished back improved flow dished face additional weight reduction. Cosworth high performance valves compatible with Cosworth Ultra
Race Valve Spring kits. Learn More

Used mounting cam angle sensor to front of North American Spec cylinder heads. Useful adapting cylinder heads to Japanese European market engines. Learn More

The original sheet metal timing belt guide flex from belt deflection when subjected to extreme rpms causing timing belt to skip or more teeth on crankshaft sprocket. Cosworth Billet Timing Belt Guide developed to control this problem is machined from solid aluminium with a hard anodized finish. Includes mounting hardware. Learn More

Carrillo Connecting Rods are manufactured from a proprietary steel; manufactured and forged to custom specifications. After experimenting with virtually every other reasonable material; Carrillo found a chromium/nickel/vanadium/molybdenum-forged alloy to be the best product to meet the stringent requirements of performance motors. Through out the manufacturing process Carrillo rods are inspected and measured to uphold high quality standards. When you go with Carrillo you go with quality. These rods are sold PER PIECE as replacement or for test fitment purposes. Learn More

Mishimoto Plastic Replacement Radiators. Learn More

Mishimoto Plastic Replacement Radiators. Learn More