Cosworth YB Rallycross Engine for Sale – Julian Godfrey Build, 600bhp, 900Nm, Dry Sump, SQ6 ECU, Zero Miles

Product Overview

For sale is an exceptional Cosworth YB rallycross engine, freshly rebuilt to full competition specification and recording zero miles since completion. This is a high-provenance, purpose-built unit assembled by Julian Godfrey— one of the most respected and recognised names in Cosworth YB engine preparation in the United Kingdom — representing the absolute pinnacle of what the YB platform can deliver in a rallycross application.

The engine produces 600bhp and 900Nm of torque, delivered through a Borg Warner turbocharger and managed by a Cosworth SQ6 ECU with a full engine loom included. Built around a 200 block with a Smith and Jones cylinder head, this is a complete, ready-to-install package with a dry sump system, dry sump tank, and a sump specifically configured to accept an 8.5-inch front differential.

Engine Specification

What’s Included

• Cosworth YB engine — freshly rebuilt, zero miles, full competition specification
• Smith and Jones cylinder head — renowned high-flow rallycross-specification head preparation
• Cosworth 200 block — the preferred block specification for high-output YB builds
• Borg Warner turbocharger — correctly specified for 600bhp output on the YB platform
• Cosworth SQ6 ECU — professional motorsport engine management, mapped for this build
• Engine wiring loom — complete and matched to the SQ6 ECU
• Dry sump lubrication system — fully integrated, essential for rallycross competition use
• Dry sump tank — included as part of the complete lubrication package
• 8.5-inch front differential compatible sump — configured and ready to accept 8.5-inch front diff installation

About the Cosworth YB & Julian Godfrey

The Cosworth YB is one of the most celebrated turbocharged four-cylinder engines in motorsport history. Originally developed for the Ford Sierra RS Cosworth and subsequently the Escort RS Cosworth, the YB became the engine of choice across rally, rallycross, circuit racing, and hillclimb for decades — and remains to this day the definitive platform for high-output, four-wheel-drive competition cars at the highest level of British and European Supercar class rallycross.

In rallycross Supercar specification, the YB platform is capable of producing outputs well in excess of 600bhp with 900Nm or more of torque — figures that demand the highest levels of build precision, component selection, and tuning expertise to achieve reliably and consistently across a full competition season.

Julian Godfrey is widely regarded as the foremost authority on Cosworth YB engine preparation in the United Kingdom. With decades of experience building engines for front-line British, European, and World Rallycross competitors, his work is synonymous with maximum power, exceptional reliability, and championship-winning results. An engine built by Julian Godfrey is not simply a component — it is a statement of intent from any serious rallycross programme.

The specification of this build reflects the demands of top-level competition: the Cosworth 200 block provides the structural integrity required to contain extreme cylinder pressures at full boost; the Smith and Jones head is a proven high-flow preparation delivering the airflow efficiency needed to support 600bhp; and the Borg Warner turbocharger provides the fast spool and high-volume delivery essential for the short, explosive power demands of the rallycross format.

The dry sump lubrication system — with tank included — is an essential requirement for rallycross use, eliminating oil surge under the extreme lateral and longitudinal loads generated in competition. The sump’s configuration to accept an 8.5-inch front differential makes this engine a direct, ready-to-install solution for the most common 4WD rallycross drivetrain layouts at Supercar level.

Ideal For

• British Rallycross Championship Supercar class
• European Rallycross Championship entries
• World RX privateer and works-supported programmes
• New rallycross Supercar builds requiring a complete, proven engine package
• Teams replacing or upgrading an existing YB installation
• Competitors seeking a Julian Godfrey-built engine with zero miles and full provenance

Purchasing & Enquiries

This Cosworth YB rallycross engine is available for immediate sale. The unit has zero miles since its rebuild and is complete with all ancillaries as listed. It is ready for installation without further preparation. Inspection is welcomed prior to purchase and full build documentation is available on request.

Please contact us directly for pricing, further technical specification, and availability.