There are three alternatives when thinking of axles:
1) ‘English axle’ Standard production axle on all Escorts including RS products. Reliable but prone to bending in very rough events. Produced as homologated axle for RS2000 in Gp 1. Wheel arch extensions not necessary, but also excellent choice for cheap Gp II car.
The Capri derived Atlas axle is no longer available as a new part. Gp 4 axles with their bracketry for Gp 4 suspension can be made up or are available from Rallye Sport Dealers.
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For the first time, Ford is using a front-wheel drive in a middle range vehicle. For this reason, the well-proven MTX 75 transmission from the Fiesta/Escort has been modified and adapted to the requirements of the Ford Mondeo. At the same time, a 4×4 version is also offered, in which the MTX 75 transmission is extended, as on the Escort 4×4, by a transfer box. The transfer box in the Ford Mondeo is a new development and effectively transfers the higher torque to the front axle. This brochure describes all new features and modifications implemented on the MTX 75 transmission compared to the MTX 75 transmission of the Escort ‘91 as well as on the MTX 75 4×4 drive concept and vehicle compared to the Ford Mondeo with front wheel drive.
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The ‘I4′ DOHC engine first introduced in the Ford Sierra and Granada models of late 1989 was only available in the Sierra in 2.0-litre 8-valve form. While power output improvements can be made to the stock 2.0 8v engine, as documented in a separate article entitled ‘DOHC tuning’ and available from http://www.crustworld.co.uk/sierra/dohctuning.pdf, the engine output is ultimately limited by the availability and cost-effectiveness of off-the-shelf tuning parts.
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The Ford supplied Sierra 4×4 Supplementary Workshop Manual is a “must have” for any owner of one of these cars. The biggest problem can be actually finding one to purchase. I got lucky and managed to get mine direct from a Ford dealer, brand new for Ł8, who was having a clearout. They do appear regularly at autojumbles and it is just a case of keep looking. The manual only covers those items unique to the 4×4 Sierra’s and (more…)

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