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Reduced price! Coussinets de bielles trimétal ACL Opel 1.6 Turbo Z16LER A16LET View larger

ACL trimetal connecting rod bearings Opel 1.6 Turbo Z16LER A16LET

New product

Set of 8 trimetal connecting rod half-bearings for Opel 1.6 Turbo.

  • Brand and treatment: ACL Race
  • Compatibility: Corsa, Astra, Insignia, Meriva
  • Engine codes: A16LEL, A16LER, A16LES, A16LET, B16LER, Z16LEL, Z16LER, Z16LET
  • Available sizes: standard to +0.50 mm, increased-clearance version (HX)

More details

72,69 € tax incl.

-5%

76,51 € tax incl.

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  • The Opel 1.6 litre turbocharged petrol four-cylinder engine

    This 1.6 litre turbocharged 16-valve petrol four-cylinder engine (A16LEL, A16LER, A16LES, A16LET, B16LER, Z16LEL, Z16LER, Z16LET) is fitted notably to the Corsa D and E, Astra H and J, Insignia A and Meriva A. ACL lists a single bearing set for these engines: same crankpin diameter, 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 bearings
    Crankpin Ø 42.971 / 42.987 mm
    Housing bore Ø 46.000 / 46.013 mm
    Width 16.63 mm
    ReferenceBrand and treatmentSizeWall thickness (mm)
    4B1355H-STDACL Race - UntreatedStandard1.495
    4B1355HX-STDACL Race - UntreatedStd, increased clearance (HX)1.482
    4B1355H-.025ACL Race - Untreated+0.0251.5075
    4B1355H-.25ACL Race - Untreated+0.251.62
    4B1355H-.50ACL Race - Untreated+0.501.745

    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 Series
    Standard (STD)Standard journal, not reground0.047 to 0.056 mm
    Increased clearance (HX)Wider clearance: high oil flow, high rpm0.073 to 0.081 mm
    +0.025 mmPolished journal0.047 to 0.056 mm
    +0.25 mmJournal reground to 0.25 mm0.047 to 0.056 mm
    +0.50 mmJournal reground to 0.50 mm0.047 to 0.056 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 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 brand

    ACL Bearing CompanyACL 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.

    Vehicle compatibility

    This connecting rod bearing set fits the 1.6 litre turbocharged four-cylinder engine of the following Opel models:

    BrandModel (chassis)Engine codePowerYears
    OPELASTRA H (A04) 1.6 TurboA16LET, Z16LET180 hp2007–2010
    OPELASTRA H Estate (A04) 1.6 TurboA16LET, Z16LET180 hp2007–2010
    OPELASTRA H GTC (A04) 1.6 TurboA16LET, Z16LET180 hp2007–2010
    OPELASTRA H TwinTop (A04) 1.6 TurboA16LET, Z16LET180 hp2007–2010
    OPELASTRA J (P10) 1.6 Turbo / 1.6 Turbo 4x4A16LET180 hp2009–2015
    OPELASTRA J Saloon 1.6 TurboA16LET180 hp2012–2013
    OPELASTRA J GTC 1.6 TurboA16LET180 hp2011–2013
    OPELASTRA J Sports Tourer (P10) 1.6 TurboA16LET180 hp2010–2015
    OPELCORSA D (S07) 1.6 TurboA16LEL, A16LER, A16LES, B16LER, Z16LEL, Z16LER150–211 hp2006–2014
    OPELCORSA D Van/hatchback (S07) 1.6Z16LER192 hp2012–2014
    OPELCORSA E (X15) 1.6 TurboB16LER207 hp2015–2019
    OPELINSIGNIA A (G09) 1.6 TurboA16LET180 hp2008–2017
    OPELINSIGNIA A Saloon (G09) 1.6 TurboA16LET180 hp2008–2017
    OPELINSIGNIA A Sports Tourer (G09) 1.6 TurboA16LET180 hp2009–2013
    OPELMERIVA A MPV (X03) 1.6 TurboZ16LET180 hp2005–2010

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