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Trimetal connecting rod bearings 50 mm Peugeot Citroën XU9 XU10

New product

Set of 8 trimetal connecting rod half-bearings for Peugeot and Citroën XU9, XU10 (Ø 50 mm).

  • Brand and treatment: ACL Race, King Racing
  • Compatibility: Peugeot 205, 305, 306, 309, 405, 406, 605, 806; Citroën BX, ZX, XM, Xantia, Evasion, Xsara
  • Engine codes: XU9, XU10
  • Available sizes: standard to +0.25 mm, increased-clearance version (HX / STDX)

More details

70,50 € tax incl.

-5%

74,21 € tax incl.

IN STOCK

Stock NSB France : 25 Items

  • The Peugeot and Citroën XU9 and XU10 four-cylinder engines

    The XU9 (1.9 litre) and XU10 (2.0 litre) are in-line four-cylinder engines from Peugeot and Citroën, in 8-valve (XU92C, XU9JA, XU10J2 and derivatives) and 16-valve (XU9J4, XU10J4, XU10J4RS) versions, fitted to the Peugeot 205, 305, 306, 309, 405, 406, 605 and 806 and to the Citroën BX, ZX, XM, Xantia, Evasion and Xsara. ACL and King list the same bearing set for these engines: a single set covers the family.

    From the factory, these engines are fitted with standard production connecting rod bearings, sized for the loads of the original engine: as soon as power, engine speed or boost pressure increase, they reach their limits.

    Trimetal connecting rod bearings

    A trimetal bearing stacks three layers: a steel back, a copper-lead intermediate layer with high load capacity and an anti-friction running surface that protects the journal. The complete set contains 8 half shells, four pairs for a four-cylinder engine.

    The original bearing relies on an aluminium alloy over a steel back, intended for low to medium loads, whereas trimetal is designed for high, sustained loads: an aluminium bi-metal takes around 8,000 psi, a performance trimetal up to 12,000 psi, 50% more. Hence better resistance and better durability on turbocharged, supercharged and high-revving engines.

    Technical specifications

    Fitment dimensions common to all references
    ACL / King bearings
    Crankpin Ø 49.984 / 50.000 mm
    Housing bore Ø 53.695 / 53.708 mm
    Width 20.2 / 20.25 mm
    ReferenceBrand and treatmentSizeWall thickness (mm)
    4B7700H-STDACL Race - UntreatedStandard1.834
    4B7700HX-STDACL Race - UntreatedStd, increased clearance (HX)1.820
    4B7700H-.25ACL Race - Untreated+0.251.959
    CR4602XPKing Racing - UntreatedStandard1.834
    CR4602XP STDXKing Racing - UntreatedStd, increased clearance (STDX)1.821
    CR4602XP0.25King Racing - Untreated+0.251.961

    Running clearance

    The running clearance is the gap between the bearing and the journal where the oil film flows.

    In operation, the crankshaft journal does not rub against the bearing: it rides on this oil film, which carries the load. Clearance sets the thickness of this film: too tight, oil flows poorly, temperature rises and the risk of seizure increases; too loose, oil escapes, the film loses load-carrying capacity and oil pressure drops. The right clearance is the balance between adequate lubrication and a well-maintained oil film.

    Size / gradeWhen to choose itACL Race SeriesKing XP
    Standard (STD)Standard journal, not reground0.053 to 0.063 mm0.050 mm
    Increased clearance (HX / STDX)Wider clearance: high oil flow, high rpm0.078 to 0.088 mm0.075 mm
    +0.25 mmJournal reground to 0.25 mm0.053 to 0.063 mm0.050 mm

    Checking on assembly: lay a calibrated strip (Plastigauge) on the journal, torque the rod cap to spec, then compare the crushed strip against the gauge to read the clearance.

    Plastigauge

    Order the Plastigauge →

    Technical guide

    The ACL and King rod bearings shown here are trimetal bearings, designed for engine building and racing. Compared with an original bearing, they handle far higher loads: they cope with increased power, high rpm or the addition of a turbo or supercharger, where a standard bearing quickly reaches its limit.

    The two brands

    ACLACL Bearing Company, an Australian manufacturer of high-performance engine bearings since 1949, offers with its Race Series precise trimetal bearings, available in many sizes and proven on built engines worldwide.
    King RacingKing Engine Bearings, an Israeli manufacturer of high-performance engine bearings since the 1960s, offers with its pMax Black trimetal alloy bearings designed for heavy loads.

    Construction and advantages

    CriterionACL Race SeriesKing Racing
    Cross-sectionCross-section of an ACL Race Series trimetal bearingCross-section of a King Racing trimetal bearing
    TypeHigh-performance trimetal bearingHigh-performance trimetal bearing
    Country of manufactureAustraliaIsrael
    ConstructionTrimetal: steel back, copper layer, soft surfaceTrimetal: steel back, copper layer, soft surface
    AlloyRace Series (copper-lead)pMax Black (hardened copper-lead)
    Protective coatingNoNo
    Available sizesStandard to +0.25 mm (+ increased clearance HX)Standard to +0.25 mm (+ increased clearance STDX)

    Vehicle compatibility

    This connecting rod bearing set fits the XU9 and XU10 engines of the following Peugeot and Citroën models:

    BrandModel (chassis)Engine codePowerYears
    PEUGEOT205 I (741A/C) 1.9 GTIXU9J1, XU9JA102–128 hp1986–1987
    PEUGEOT205 I Décapotable (741B, 20D) 1.9 / 1.9 CTI / 1.9 CTiXU9J1, XU9JAZ101–125 hp1986–1994
    PEUGEOT205 II (20A/C) 1.9 / 1.9 GTI / 1.9 GTI CatXU92C, XU9J1, XU9JA, XU9JAZ102–131 hp1987–1998
    PEUGEOT305 II (581M) 1.9XU9J1, XU9S98–102 hp1982–1988
    PEUGEOT305 II Break (581E) 1.9XU9J1, XU9S98–102 hp1984–1988
    PEUGEOT309 I (10C, 10A) 1.9 / 1.9 GTIXU9J1, XU9JA, XU9JAZ, XU9M, XU9S98–131 hp1985–1989
    PEUGEOT309 II (3C, 3A) 1.9 / 1.9 GTI / 1.9 GTI 16VXU9J1, XU9J4, XU9J4Z, XU9JA, XU9JAZ, XU9M98–158 hp1989–1993
    PEUGEOT405 I (15B) 1.9 / 1.9 (15BDFV) / 1.9 4x4 / 1.9 Injection / 1.9 Injection 4x4 / 1.9 SPort MI-16 4x4 / 1.9 Sport MI-16XU92C, XU9J1, XU9J2, XU9J4, XU9J4Z, XU9JAZ, XU9M95–158 hp1987–1993
    PEUGEOT405 I Break (15E) 1.9 / 1.9 4x4 / 1.9 AWDXU92C, XU9J1, XU9J4, XU9JAZ, XU9M95–158 hp1987–1992
    PEUGEOT405 II (4B) 1.9 / 1.9 (4BD5A2) / 2.0 / 2.0 16V / 2.0 MI-16 / 2.0 T 16 X4 / 2.0 X4XU10J2, XU10J4, XU10J4TE/Z, XU10J4Z, XU92C, XU9JAZ97–196 hp1992–1999
    PEUGEOT405 II Break (4E) 1.9 / 2.0 / 2.0 4x4XU10J2, XU10J4TE/Z, XU92C, XU9J2107–196 hp1992–1997
    PEUGEOT605 (6B) 2.0 / 2.0 16V / 2.0 16V (6BRFV2, 6BRFV9) / 2.0 TurboXU102C, XU10J2, XU10J2TE, XU10J2Z, XU10J4R, XU10MZ107–147 hp1989–1999
    PEUGEOT306 (7B, N3, N5) 2.0 / 2.0 S16 / 2.0 STXU10J2, XU10J4, XU10J4R, XU10J4Z121–152 hp1994–2001
    PEUGEOT306 Berline à hayon (7A, 7C, N3, N5) 2.0 / 2.0 16V / 2.0 S16 / 2.0 XSiXU10J2, XU10J4, XU10J4R, XU10J4RS, XU10J4Z121–169 hp1993–2001
    PEUGEOT306 Break (7E, N3, N5) 2.0 / 2.0 16VXU10J4R132–135 hp1997–2002
    PEUGEOT306 Décapotable (7D, N3, N5) 2.0 / 2.0 16VXU10J2, XU10J4R121–135 hp1994–2002
    PEUGEOT406 (8B) 2.0 / 2.0 16V / 2.0 TurboXU10J2TE, XU10J4R132–147 hp1995–2004
    PEUGEOT406 Break (8E/F) 2.0 / 2.0 16V / 2.0 TurboXU10J2TE, XU10J4R132–147 hp1996–2004
    PEUGEOT406 Coupé (8C) 2.0 16VXU10J4R132–136 hp1997–2004
    PEUGEOT806 (221) 2.0 / 2.0 16V / 2.0 TurboXU10J2, XU10J2TE, XU10J4R121–147 hp1994–2002
    CITROËNBX (XB-_) 1.9 / 1.9 GTi (XB) / 19 / 19 E / 19 GTi / 19 GTi 16V / 19 GTi 4x4XU92C, XU9J2, XU9J4, XU9JA, XU9M95–160 hp1984–1994
    CITROËNBX Break (XB-_) 1.9 TZi / 19 / 19 4x4 / 19 CatXU92C, XU9J1, XU9J2, XU9JA, XU9M95–125 hp1986–1994
    CITROËNEVASION Monospace (22, U6) 2.0 / 2.0 16V / 2.0 Turbo C.T.XU10J2/C, XU10J2TE, XU10J4R121–147 hp1994–2002
    CITROËNXANTIA (X1_, X2_) 2.0 / 2.0 16V / 2.0 Turbo / 2.0 i / 2.0 i 16VXU10J2C, XU10J2C/Z L3, XU10J2TE, XU10J4/Z, XU10J4R121–157 hp1993–2003
    CITROËNXANTIA Break (X1_, X2_) 2.0 Turbo / 2.0 i / 2.0 i 16VXU10J2C, XU10J2TE, XU10J4R121–147 hp1995–2003
    CITROËNXM (Y3) 2.0 i / 2.0 i TurboXU10J2, XU10J2TE/Z, XU10J4R, XU10MZ107–141 hp1989–1994
    CITROËNXM Break (Y3) 2.0 Turbo / 2.0 i / 2.0 i (Y3A)XU102C, XU10J2, XU10J2TE/Z, XU10MZ107–141 hp1991–1994
    CITROËNXM (Y4) 2.0 / 2.0 Turbo / 2.0 i 16VXU10J2, XU10J2TE, XU10J4R121–147 hp1994–2000
    CITROËNXM Break (Y4) 2.0 / 2.0 Turbo / 2.0 i 16VXU10J2, XU10J2TE, XU10J2TE/Z, XU10J4R121–147 hp1994–2000
    CITROËNXSARA (N1) 2.0 16VXU10J4R132 hp1998–2000
    CITROËNXSARA Break (N2) 2.0 16VXU10J4R132 hp1998–2000
    CITROËNXSARA Coupé (N0) 2.0 / 2.0 16V / 2.0 VTS / 2.0 i 16VXU10J4R, XU10J4RS132–167 hp1998–2005
    CITROËNZX (N2) 1.9 / 1.9 i / 2.0 / 2.0 i / 2.0 i 16VXU10J2C, XU10J4/Z, XU10J4RS, XU9JA120–166 hp1991–1997
    CITROËNZX Break (N2) 2.0XU10J2C/Z L3121 hp1993–1995

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