Diesel Section

The XUD engine

XUD Engine1905cc diesel and turbo diesel versions were produced for the 306 between 1993 and 1999. The engines were the same units as previously seen in the award winning 405 series in the early 90s. The unit itself was the bigger brother of the 1.8d and td engines that were used in many Peugoets in the 80ís. The 1.9 turbo version was intercooled and produced an impressive 92bhp and 145 lbs/ft. The non turbo was ultra economical 55mpg and a respectable 70bhp.

Word has it that the turbo charged engine had to be de-tuned prior to its release because it was on par with the XSi model performance wise. Because of is this, the engine is very easy to tune with its mechanical injection systemÖ. with just a small tweak of the fuel pump and shortening of the wastegate arm, big gains can be seen.

It was considered to be one of the finest diesel engines of its time only superseded by the common rail engines the Germans developed in the mid - late 90s. The diesel engines are also widely renowned to be bomb proof in the reliability stakes. The early models were prone to head gasket failure but apart from that the engines were very, very good and have been known to go to 200,000 miles and beyond.

The Dturbo model was the top of the line 3 door with XTDT being the top 5 door. (There were very few Dturbos produced with 5 doors)

The DW10 (HDi) engine

DW10 EngineThe 2.0 L DW10 was the first PSA Diesel engine to feature common rail direct injection, and was given the commercial designation HDi. It has a bore of 85 mm (3.3 in) and a stroke of 88 mm (3.5 in) for a total displacement of 1997 cc, replacing the XUD9 in 1999. It was initially available in 90 PS (66 kW) form, with two valves per cylinder and a non-inter-cooled turbo.

The DW10 was used as the basis for the new family of Diesel engines co-developed with Ford, and it is used in the many Fords besides various CitroŽn and Peugeot passenger models. The DOHC 16-valve power plants (not seen in a 306) were mated to a second generation common rail injection system and a different turbo, pushing power to 136 PS (134 hp/100 kW).

Going with the flow of the common rail engine, Peugeot had developed the 2 litre HDi engine to keep up with the Germans; a much more refined, smoother and quieter engine than its predecessor. It was slightly down on power with 90bhp but torque was improved with around 155lbs. Strangely Peugeot chose not to fit an inter-cooler to the 90bhp version (110bhp versions were seen in the 406 and 307).

The engines respond well to re-maps and tuning box technology, although an after-market inter-cooler is needed to get big power increases from them.

Trim levels remained high with the Meridian and Dturbo being the top of the range.