Description

Ford Escort RS Cosworth 1993 Training Manual

If you are working on an Escort RS Cosworth and you want to know what Ford Motorsport actually did to prep these cars for Group N rallying, you need this 25-page training manual. I’ve seen too many guys try to guess the suspension geometry or use aftermarket torque specs on the engine cradle. Don’t. This is the Ford-approved document that tells you exactly what parts to fit and how to install them. It’s dated May 1993 – Issue 2 – and it’s the real deal from the factory motorsport department.

Engine: What the Manual Actually Specifies

Engine section covers modifications for Group N homologation – not general service procedures. You’ll find the recommended oil cooler setup, boost regulation details, and the exact fasteners for the engine cradle. Torque values are given for the main bearing caps and cylinder head bolts. If you’re swapping a fresh long block into a competition shell, cross-check your numbers here. The manual also lists the part numbers for the competition engine mounts – those make a difference in how the drivetrain handles torque loads. Do not rely on a generic aftermarket manual for these; they get the thread pitch wrong half the time.

7 Sections Beyond the Engine

The table of contents runs through Body, Engine, Suspension, Wheels/Tyres/Steering, Brakes, Drive Line & Transmission, Clutch, Exhaust, Fuel, Electrics, and the Engine Wiring Diagram. Each section is short – this is a 25-page document – but every page is packed with factory data. For example, the Suspension section specifies spring rates and damper settings for gravel and tarmac. The Brakes section tells you which pad compounds and disc sizes are allowed under Group N rules. The Fuel section covers the surge tank installation and the required fuel lines. You won’t find that in a Haynes manual.

Wiring Diagram: Page 3 Reference

Page 3 contains the Engine Wiring Diagram. If you’re chasing an intermittent cut-out or setting up a standalone ECU, this diagram shows the factory routing for the Ford EEC-IV system. The manual also includes the Electrics section with notes on fuse ratings and relay positions for the competition harness. Use this when you’re sorting out the charging system or adding a kill switch. Aftermarket diagrams often omit the ground points that matter.

Who Needs This Manual?

Home garage enthusiasts building a dedicated rally car or a street-driven Escort RS Cosworth that sees track days. If you’re a DIY mechanic who wants to understand how Ford prepared these cars for competition – and you want to avoid breaking expensive Cosworth components – this is your reference. The manual assumes you have the standard workshop manual for service procedures, so pair it with the Ford Sierra and Escort RS Cosworth Workshop Manual for a complete library. For other Ford training manuals, see the Ford Transit 2000 Training Manual – OEM Factory Specs & Procedures or the Ford ESCAPE Training Manual – Factory OEM 436 Pages.

Source Authenticity: OEM vs. Aftermarket

This is a genuine Ford Motorsport publication – not a scanned reprint from a third party. The disclaimer on page 2 states the right to change specs without notice, which tells you it’s an official document. The part numbers use Ford’s Finis codes; items marked with an asterisk are standard production parts orderable through any Ford dealer. I trust OEM documentation because the torque values and wiring colors match what came from the factory. Aftermarket manuals skip the homologation notes and the specific Group N part numbers. Don’t take a shortcut here.

For broader context on automotive engineering standards, you can read the Automotive Industry Overview and the Manual Transmission article for understanding driveline basics, but for this specific car, stick to the Ford source.

FAQ

Does this manual include wiring diagrams?

Yes, page 3 shows the engine wiring diagram.

What about torque specs for the suspension?

The suspension section covers front and rear damper settings, spring rates, and ball joint preload. Ford engineers documented the specific torque values for the lower arm pivot bolts and anti-roll bar brackets. If you’re setting up a rally car, you need these numbers because aftermarket specs often differ. I’ve seen stripped threads from using generic values. This manual gives you the factory recommended torque in lb-ft for each fastener. Don’t skip it.

The manual is ready to use as a PDF – 25 pages of pure factory data. Whether you’re refreshing a Cosworth for vintage rallying or building a fresh Group N replica, the information here is what Ford Motorsport released for the 1993 season. Access the Factory Manual now to get the correct part numbers, wiring diagrams, and torque specs on your bench before you touch a wrench.