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Duratec Tuning
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on November 02 2008

So this page is all about the Ford Duratec DHE420 engine. I managed to locate a new engine, from a Fiesta ST150, which is going to be the new powerplant for my Fiesta for 2009 onwards. I'm also changing the gearbox, from the B5 (or BC) to the latest IB5 box.

Looking on the web, there are a fair number of companies involved in tuning and producing parts for the Duratec engine. SBD, Raceline and Dunnel all sell kits and complete engines, and the costs appear to be quite high. But you are paying for quality at the end of the day, so the state of the build is once again down to the size of your wallet. Ford of course also has a large amount of information and parts for the Fiesta Sporting Trophy teams. Performance and upgrade parts have been honed over several years competition, on the tracks and in the forests, and it looks as though the support for the engine and drivetrain is improving all the time.

Pictures of the conversion
The pictures below show the engine being dismantled of all the parts that aren't really necessary for competition use. I've removed the Air Con compressor, power steering pump etc, and since fitting the engine in the car, have decided to retain the standard alternator for reliability. I've removed 31KGs of parts prior to refitting the Alternator.

August 2008: The pictures below show the first time I offered up the 2.0 Duratec and IB5 gearbox in to the car

This is what the standard Ford ST150 engine mount looks like (FINIS nnnnnnn)

As an upgrade to the ST150 engine mount (above) these pictures show the M-Sport GpN engine mounting arm which is CNC machined from a chunk of aluminium, and finished with a black anodised coating. M-Sport also supply (at extra cost) a nylon type insulator, which replaces the Ford rubber insulator from the ST150 mount. To replace the standard insulator, you simply bend out a couple of retaining tags and press it out, and push the replacement item back in its place. Two M6 bolts are then used to hold the replacement insulator in place.

The GpN mounting arm itself bolts more securely to the engine cover, as it uses 3x M8 bolts and 2x M12 bolts, whereas the standard arm just uses two M12 bolts.