Cosworth High Performance Engine assemblies are the perfect basis for your high performance application. Each version has gone through countless hours of engineering and evaluation to determine the best combination of parts and build specification, ensuring maximum reliable performance. Each Cosworth High Performance Engine assembly starts with all new select components as the foundation of the performance build. Every block is thoroughly inspected before the cylinders are honed to perfection. We then balance the rotating assembly that includes new Cosworth Billet crank along with Cosworth Forged connecting rods, Cosworth tri-metal bearings and Cosworth Forged Pistons. The motorsport grade parts are then professionally assembled by expert engine builders in the Cosworth engine assembly facility. Each High Performance Engine Assembly includes a complete specification sheet listing all critical dimensions along with a serialized plaque. Combine with one of our CNC ported Big Valve Cylinder Heads and Camshaft sets for additional performance.

The Cosworth 4G63 2.2L stroker engine combines the perfect bore to stroke ratio, yielding potentially big gains in torque while still allowing the engine to rotate and produce power in the higher rpm range.

New Mitsubishi 4G63 Evolution Block
New Cosworth Billet Crank (94mm)
Cosworth Forged H-beam Connecting Rods
Cosworth Forged Pistons (86mm) and rings
Cosworth Tri-metal bearings
Cosworth Heavy Duty main studs
Piston squirt jets
Balanced to within .5 gram
Complete blue-print assembly
Ring gap checked
Bearing clearance checked
Deck height checked
Connecting Rod side clearance checked
Crankshaft end float checked