Cosworth YB Rallycross Engine

Cosworth YB Rallycross Engine | Proven Julian Godfrey Build

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.

This Cosworth YB rallycross 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.

Julian Godfrey’s reputation in Cosworth YB preparation is unrivalled at the top level of British and European rallycross. This Cosworth YB rallycross engine, bearing his name as builder, carries a level of build quality, attention to detail, and competitive credibility that commands immediate recognition among serious competitors and engineers in the sport.

Complete Package Includes:

• Complete Cosworth YB rallycross engine, freshly rebuilt, zero miles
• Smith and Jones cylinder head, high-flow rallycross-specification preparation
• Cosworth 200 block, preferred specification for high-output YB builds
• Borg Warner turbocharger, correctly specified for 600bhp output
• Cosworth SQ6 ECU with matched engine wiring loom
• Dry sump lubrication system with dry sump tank included
• Sump configured and ready to accept 8.5-inch front differential installation

Characteristics & Specification:

• Engine: Cosworth YB
• Application: Rallycross – Supercar Class
• Builder: Julian Godfrey
• Build Status: Just Rebuilt – Zero Miles
• Power Output: 600bhp
• Torque: 900Nm
• Block: Cosworth 200 Block
• Cylinder Head: Smith and Jones
• Turbocharger: Borg Warner
• Engine Management: Cosworth SQ6 ECU
• Wiring Loom: Included
• Lubrication: Dry Sump
• Dry Sump Tank: Included
• Sump Configuration: Ready to Accept 8.5-Inch Front Differential

Vehicle Fitment – Compatible Models:

• British Rallycross Championship Supercar class vehicles
• European Rallycross Championship entries
• World RX privateer and works-supported Supercar programmes
• Any 4WD rallycross Supercar chassis specifying 8.5-inch front differential compatibility

Why Choose This Cosworth YB Rallycross Engine:

• Freshly rebuilt with zero miles since completion, ready for immediate installation
• Built by Julian Godfrey, the foremost authority on Cosworth YB preparation in the UK
• Cosworth 200 block provides the structural integrity required to contain extreme cylinder pressures at full boost
• Smith and Jones head delivers the airflow efficiency needed to support 600bhp reliably
• Dry sump system with tank eliminates oil surge under extreme rallycross competition loads
• Sump configuration directly supports 8.5-inch front differential installation, a ready-to-install solution for Supercar-level 4WD layouts

Key Features:

• Cosworth YB turbocharged four-cylinder rallycross engine
• 600bhp and 900Nm torque output
• Cosworth SQ6 ECU with complete matched wiring loom
• Borg Warner turbocharger for fast spool and high-volume delivery
• Dry sump lubrication system with tank, fully integrated for competition use

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