Page "Cosworth" Paragraph 53

Currently these are inline-four engines based on the Mazda MZR engine.

Changes includes a billet crankshaft, barrel throttle bodies, new cylinder head with larger valves, pistons, con rods and camshafts.

A detuned version, targeting club racers, is sold to the consumer market.

This engine retains the standard crankshaft, and has a different cylinder head.

Both engines are built by Cosworth in Torrance, California, under the guidance of newly appointed technical designer Wayne Merry ( formerly of Cosworth in Worcester UK ).