PSA XU engine

The PSA XU is a family of internal combustion engines used in Citroën and Peugeot automobiles. It became the dominant mid-size engine in Peugeot and Citroën products through the 1980s and 1990s.

The XU design was introduced in 1981 with the Peugeot 305. It was a SOHC or DOHC straight-4 design with two or four valves per cylinder, using petrol as fuel. It was applied transversely in front wheel drive vehicles only, tilted by 30°. Displacement ranged between 1580 and 1998 cc, and all production XU gasoline engines had a bore of 83 mm (3.3 in) or 86 mm (3.4 in). The engine uses in all models aluminium cylinder head. All models blocks are made, except XU10, in cast aluminium alloy with removable cast iron wet cylinder liners. XU10 blocks are made in cast iron, with bores machined directly in the block, without removable cylinder liners. Its first Citroën application was on the Citroën BX in 1983, where it appeared in 1580cc format.

The XU was replaced by the more modern EW/DW family.

XU5

The XU5 had a displacement of 1.6 L (1580 cc), with a bore of 83 mm (3.3 in) and a stroke of 73 mm (2.9 in). All XU5 engines were SOHC 2-valve per cylinder designs. It used either a single or double-barrel carburetor or fuel injection, depending on model. Output ranged from 80–115 PS (79–113 hp/59–85 kW).

XU7

The XU7 had a displacement of 1.8 L (1761 cc), with a bore of 83 mm (3.3 in) and a stroke of 81.4 mm (3.2 in). All XU7 engines used fuel injection, with a 16-valve DOHC version, the XU7 JP4, also produced. Output ranged from 90–112 PS (89–110 hp/66–82 kW).

XU8^[1]

The XU8 had a displacement of 1.8 L (1,775 cc), with a bore of 83 mm (3.3 in) and a stroke of 82 mm (3.2 in). the 16-valve DOHC turbocharged XU8 T which was fitted to the 205 Turbo 16.

XU9

The XU9 had a displacement of 1.9 L (1905 cc), with a bore of 83 mm (3.3 in) and a stroke of 88 mm (3.5 in). Many versions were produced, from a double-barrel carburetted 8-valve to a 16-valve DOHC fuel injected model. Output ranged from 105–160 PS (104–158 hp/77–118 kW).

XU10

The XU10 had a displacement of 2.0 L (1998 cc), with a bore and stroke of 86 mm (3.4 in). Many versions were produced, from a double-barrel carburetted 8-valve to a 16-valve DOHC fuel injected turbocharged model. Output ranged from 115–200 PS (113–197 hp/84–147 kW).

Motorsport

The XU engine was used in motorsport for over 3 decades.

See also

• PSA XUD (Diesel variant)
• List of PSA engines

Sources

• Guide des moteurs Peugeot Citroën (in French)

Groupe PSA, owner of the Peugeot, Citroën, and DS Automobiles brands
Current Automobile Marques	Peugeot Citroën DS Automobiles
Motorcycle Marques	Peugeot Motorcycles
Current Owners	Dongfeng Motor (13%) The French Government (13%) The Peugeot Family (14%)
Former Owners	General Motors (7%) (2012-2013)
Current Partners	BMW (Prince engine) FCA/Fiat/Ram (commercial vehicles, Sevel) Dongfeng Motor (13% owner of PSA) Mitsubishi Motors (Badge-engineering)
Former Partners	Chrysler Europe General Motors Guangzhou, China
Other Holdings	Process Conception Ingénerie Sevel (100%) Faurecia (57.43%)
Current Joint Ventures	Toyota Peugeot Citroën Automobile Czech (50%) Dongfeng Peugeot-Citroën (50%) Changan PSA (50%) Iran Khodro-Peugeot; IKAP (50%)
Former Joint Ventures	BMW Peugeot Citroën Electrification General Motors-PSA Alliance Guangzhou Peugeot Automobile Company
Automobile engines	Ford DLD engine List of PSA engines Prince engine PRV engine PSA ES engine PSA EW/DW engine PSA TU engine PSA X engine PSA XU engine PSA XUD engine
Former or Defunct Marques or Subsidiaries	Barreiros Chrysler Europe Citer SA Commer Gefco Hillman Humber Karrier Motaquip Simca Singer Sunbeam Talbot
Related articles	Automoto Christian Streiff List of Peugeot motorcycles List of PSA engines Prince engine