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PSA X engine
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The PSA X engine is a family of internal combustion engines used in Citroën, Peugeot, Talbot and Renault automobiles. The X family was mainly used in superminis and the entry level models of midsize vehicles. It is commonly called the "Douvrin" engine.
The X design was introduced in 1977 with the Peugeot 104. It was an all alluminium alloy SOHC straight-4 design with two valves per cylinder driven by a chain, using petrol as fuel. It was applied transversely in front wheel drive vehicles only, tilted by 72°.
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Encyclopedia
The PSA X engine is a family of internal combustion engines used in Citroën, Peugeot, Talbot and Renault automobiles. The X family was mainly used in superminis and the entry level models of midsize vehicles. It is commonly called the "Douvrin" engine.
The X design was introduced in 1977 with the Peugeot 104. It was an all alluminium alloy SOHC straight-4 design with two valves per cylinder driven by a chain, using petrol as fuel. It was applied transversely in front wheel drive vehicles only, tilted by 72°. Displacement ranged between 954 and 1361 cc. The gearbox (4 or 5 speed according to model) is integral and sits below the engine driven by transfer gears, using engine oil for lubrication.
The X was used until 1988, when it was replaced by the more modern belt driven camshaft TU. This was fitted with the now conventional end on gearbox with separate lubrication.
XV
The XV had a displacement of 954 cc, with a bore of and a stroke of . It used a single barrel carburetor, good for 45 PS (33 kW).
The XV was applied to the Citroën LN, Citroën Visa, Peugeot 104, Peugeot 205 and Talbot Samba.
| Model | Output | Notes |
|---|
| XV8 | 45 PS (44 hp/33 kW) | 1-bbl carb |
XW
The XW had a displacement of 1124 cc, with a bore of and a stroke of . It was initially powered by a single barrel carburetor, good for 57 PS (42 kW). A double-barrel carburetor version (XW 3S) raised power to 66 PS (48.5 kW). A detuned version with 50 PS (37 kW) was used in a few markets in place of the XV.
The XW was applied to the Citroën LN, Citroën Visa, Peugeot 104, Peugeot 205 and Talbot Samba. The version could be found in the sporty Visa X.
| Model | Output | Notes |
|---|
| XW? | 57 PS (56 hp/41 kW) | 1-bbl carb | | XW7 | 50 PS (49 hp/36 kW) | 1-bbl carb | | XW3S | 66 PS (65 hp/48 kW) | 2-bbl carb |
XZ
The XZ had a displacement of 1219 cc, with a bore of and a stroke of . It was powered by a single barrel carburetor, achieving 57 PS (42 kW) at launch, later 64 PS (47 kW). The XZ 7R variant used two double barrel carburetors which raised power to 90 PS (66 kW).
The XZ had a brief career, and was applied to the Citroën Visa, Peugeot 104, Talbot Samba and Renault 14. The could be found in the Peugeot 104 ZS Coupé and Talbot Samba Rallye, and their respective racing versions.
| Model | Output | Notes |
|---|
| XZ? | 57 PS (56 hp/41 kW) | 1-bbl carb | | XZ? | 64 PS (63 hp/47 kW) | 2-bbl carb | | XZ7 R | 90 PS (88 hp/66 kW) | twin 2-bbl carb |
XY
The XY was introduced in the place of the XZ. It had a displacement of 1361 cc, with a bore of and a stroke of . It was initially available only in a double barrel carburetor with 72 PS (53 kW), but later became available with single barrel, twin single barrel and twin double barrel carburetors. This one could reach 93 or 112 PS (68.5 or 82 kW), depending on the model it was meant for and the level of tuning.
The XY was applied in 60 PS (44 kW) to the Citroën Visa, Peugeot 104 and Peugeot 205 and Talbot Samba. The variant could be seen in deluxe versions of these models, such as the Samba Cabrio and 205 XT, the Citroën BX and the Renault 14 TS. The version was reserved for the intermediate sports levels Visa GT, 205 XS/GT, Samba S and possible the 104ZS. The two most powerful variants were used exclusively in the Visa Chrono and Chrono II, which had a successful career in rallying, especially in France. A 1440 cc with over 150 PS (110 kW) was used in the Group B racing model used by the factory team.
| Model | Output | Notes |
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| XY6B | 72 PS (70 hp/52 kW) | 2-bbl carb | | XY? | 112 PS (110 hp/82 kW) | twin 2-bbl carb | | XY7 | 60 PS (59 hp/44 kW) | 1-bbl carb | | XY8 | 80 PS (78 hp/58 kW) | twin 1-bbl carb | | XYR | 93 PS (91 hp/68 kW) | twin 2-bbl carb |
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