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1.6L 8v - C16NZ
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1.6L 8v - C16NZ
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Set of 8 trimetal connecting rod half-bearings for Opel 1.2-1.8.
These Opel petrol four-cylinder engines of 1.2 to 1.8 litres, with a single overhead camshaft and 8 valves (12NV, 12NZ, 12ST, C12NZ, X12SZ, 13N, 13NB, 13S, C13N, 14NV, 14SE, C14NZ, C14SE, X14NZ, 16NZR, 16SV, C16LZ, C16NZ, C16SE, C16SEI, E16NZ, E16SE, X16SZ, X16SZR, Z16SE) or twin overhead camshafts and 16 valves (C14SEL, X14XE, Z14XE, C16SEL, C16XE, X16XE, X16XEL, Y16XE, Z16XE, Z16XEP, Z16XER, Z16YNG, X18XE1, Z18XEL, Z18XER), are fitted notably to the Corsa, Kadett, Ascona, Manta, Astra, Vectra, Tigra, Combo, Meriva, Zafira and Signum. 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.
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.
| ACL bearings Crankpin Ø 42.971 / 42.987 mm Housing bore Ø 46.000 / 46.013 mm Width 16.63 mm |
| Reference | Brand and treatment | Size | Wall thickness (mm) |
|---|---|---|---|
| 4B1350H-STD | ACL Race - Untreated | Standard | 1.495 |
| 4B1350HX-STD | ACL Race - Untreated | Std, increased clearance (HX) | 1.482 |
| 4B1350H-.025 | ACL Race - Untreated | +0.025 | 1.5075 |
| 4B1350H-.25 | ACL Race - Untreated | +0.25 | 1.62 |
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 / grade | When to choose it | ACL Race Series |
|---|---|---|
| Standard (STD) | Standard journal, not reground | 0.047 to 0.056 mm |
| Increased clearance (HX) | Wider clearance: high oil flow, high rpm | 0.073 to 0.081 mm |
| +0.025 mm | Polished journal | 0.047 to 0.056 mm |
| +0.25 mm | Journal reground to 0.25 mm | 0.047 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.
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.
 | ACL 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. |
This connecting rod bearing set fits the petrol four-cylinder engines of the following Opel models:
| Brand | Model (chassis) | Engine code | Power | Years |
|---|---|---|---|---|
| OPEL | ASCONA B (81_, 86_, 87_, 88_) 1.3 S / 1.3 N | 13N, 13S | 60–75 hp | 1979–1981 |
| OPEL | ASCONA C (J82) 1.3 N / 1.3 S / 1.6 / 1.6 i / 1.6 i Cat | 13N, 13S, 16SV, C16LZ, C16NZ, E16NZ | 60–82 hp | 1981–1988 |
| OPEL | ASCONA C Hatchback (J82) 1.3 N / 1.3 S / 1.6 / 1.6 i / 1.6 i Cat | 13N, 13S, 16SV, C16LZ, C16NZ, E16NZ | 60–82 hp | 1981–1988 |
| OPEL | ASTRA F Saloon (T92) 1.4 i / 1.4 Si / 1.6 i / 1.6 Si / 1.4 i 16V / 1.6 i 16V / 1.4 / 1.6 | 14NV, 14SE, 16NZR, C14NZ, C14SE, C16NZ, C16SE, X14NZ, X14XE, X16SZ, X16SZR, X16XEL | 60–100 hp | 1991–1998 |
| OPEL | ASTRA F Hatchback (T92) 1.4 i / 1.4 Si / 1.6 i / 1.6 Si / 1.4 i 16V / 1.6 i 16V / 1.4 / 1.6 | 14NV, 14SE, 16NZR, C14NZ, C14SE, C16NZ, C16SE, X14NZ, X14XE, X16SZ, X16SZR, X16XEL | 60–101 hp | 1991–1998 |
| OPEL | ASTRA F Estate (T92) 1.4 i / 1.4 Si / 1.6 i / 1.6 Si / 1.4 i 16V / 1.6 i 16V / 1.4 / 1.6 | 14NV, 14SE, 16NZR, C14NZ, C14SE, C16NZ, C16SE, X14NZ, X14XE, X16SZ, X16SZR, X16XEL | 60–101 hp | 1991–1998 |
| OPEL | ASTRA F CLASSIC Saloon (T92) 1.4 i / 1.6 i / 1.6 i 16V | X14NZ, X16SZR, X16XEL | 60–101 hp | 1998–2002 |
| OPEL | ASTRA F CLASSIC Hatchback (T92) 1.4 i / 1.6 i / 1.6 i 16V | X14NZ, X16SZR, X16XEL | 60–101 hp | 1998–2002 |
| OPEL | ASTRA F CLASSIC Estate (T92) 1.4 i / 1.6 i / 1.6 i 16V | X14NZ, X16SZR, X16XEL | 60–101 hp | 1998–2005 |
| OPEL | ASTRA F Convertible (T92) 1.6 i / 1.4 Si / 1.4 i 16V | C14SE, X14XE, X16SZ, X16SZR | 71–90 hp | 1993–2001 |
| OPEL | ASTRA F Fourgon/Estate (T92) 1.4 i / 1.6 i / 1.6 i 16V | C14NZ, C16NZ, C16SE, X16SZ, X16SZR, X16XEL | 60–101 hp | 1991–1999 |
| OPEL | ASTRA G Saloon (T98) 1.6 / 1.6 16V / 1.8 16V / 1.4 16V / 1.8 / 1.6 LPG / 1.4 LPG | X14XE, X16SZR, X16XEL, X18XE1, Z14XE, Z16SE, Z16XE, Z16XEP, Z18XEL | 75–125 hp | 1998–2009 |
| OPEL | ASTRA G Hatchback (T98) 1.6 / 1.6 16V / 1.8 16V / 1.4 16V / 1.8 / 1.6 LPG / 1.4 LPG | C16SEL, X14XE, X16SZR, X16XEL, X18XE1, Z14XE, Z16SE, Z16XE, Z16XEP, Z18XEL | 75–125 hp | 1998–2007 |
| OPEL | ASTRA G Estate (T98) 1.6 / 1.6 16V / 1.8 16V / 1.4 16V / 1.6 CNG / 1.6 LPG / 1.4 LPG | X14XE, X16SZR, X16XEL, X18XE1, Z14XE, Z16SE, Z16XE, Z16XEP, Z16YNG | 75–125 hp | 1998–2004 |
| OPEL | ASTRA G CLASSIC (T98) 1.4 16V / 1.6 16V / 1.6 | Z14XE, Z16XE, Z16XEP | 90–103 hp | 2004–2009 |
| OPEL | ASTRA G CLASSIC Saloon (T98) 1.6 16V / 1.4 16V | Z14XE, Z16XE | 90–101 hp | 2004–2009 |
| OPEL | ASTRA G CLASSIC Caravan (F35) 1.4 16V / 1.6 | Z14XE, Z16XE, Z16XEP | 90–103 hp | 2004–2009 |
| OPEL | ASTRA G Coupé (T98) 1.6 16V / 1.8 16V | X18XE1, Z16XE, Z16XEP | 101–125 hp | 2000–2005 |
| OPEL | ASTRA G Convertible (T98) 1.6 16V / 1.8 16V / 1.6 | Z16XE, Z16XEP | 101–125 hp | 2001–2005 |
| OPEL | ASTRA G Fourgon/Estate (F70) 1.6 / 1.4 / 1.6 LPG | C16SEL, X14XE, X16SZR, Z14XE, Z16SE, Z16XE, Z16XEP | 75–103 hp | 1998–2005 |
| OPEL | ASTRA H (A04) 1.6 / 1.8 | Z16XEP, Z16XER, Z18XER | 105–140 hp | 2004–2010 |
| OPEL | ASTRA H Saloon (A04) 1.6 / 1.8 | Z16XEP, Z16XER, Z18XER | 105–140 hp | 2007–2010 |
| OPEL | ASTRA H Estate (A04) 1.6 LPG / 1.6 / 1.8 | Z16XEP, Z16XER, Z18XER | 105–140 hp | 2004–2010 |
| OPEL | ASTRA H CLASSIC Saloon (A04) 1.6 / 1.8 | Z16XER, Z18XER | 116–140 hp | 2009–2014 |
| OPEL | ASTRA H CLASSIC Hatchback (A04) 1.6 / 1.8 | Z16XER, Z18XER | 116–140 hp | 2009–2014 |
| OPEL | ASTRA H CLASSIC Estate (A04) 1.6 / 1.8 | Z16XER, Z18XER | 116–140 hp | 2009–2014 |
| OPEL | ASTRA H Fourgon/Estate (L70) 1.6 EcoTec | Z16XEP, Z16XER | 103–116 hp | 2004–2010 |
| OPEL | ASTRA H GTC (A04) 1.6 / 1.8 | Z16XEP, Z16XER, Z18XER | 105–140 hp | 2005–2010 |
| OPEL | ASTRA H TwinTop (A04) 1.6 / 1.8 | Z16XEP, Z16XER, Z18XER | 105–140 hp | 2005–2010 |
| OPEL | COMBO Fourgon/monospace 1.6 / 1.6 CNG 16V | Z16SE, Z16YNG | 87–97 hp | 2001– |
| OPEL | COMBO Fourgon/monospace (71_) 1.2 / 1.4 / 1.4 16V | C12NZ, C14NZ, C14SE, X12SZ, X14XE | 45–90 hp | 1994–2001 |
| OPEL | COMBO Tour 1.6 / 1.6 CNG | Z16SE, Z16YNG | 84–97 hp | 2001–2011 |
| OPEL | CORSA A Hatchback (S83) 1.2 S / 1.4 S / 1.3 i / 1.4 i / 1.4 Si / 1.6 GSI / 1.2 i / 1.2 N / 1.3 / 1.6 GSI Cat | 12NV, 12ST, 13NB, 14NV, C12NZ, C13N, C14NZ, C14SE, C16NZ, C16SE, C16SEI, E16SE | 45–101 hp | 1982–1993 |
| OPEL | CORSA A Fourgon/berline à hayon (S83) 1.2 / 1.3 | 12NV, 12ST, 13NB, C12NZ | 45–60 hp | 1986–1994 |
| OPEL | CORSA A TR (S83) 1.2 S / 1.3 / 1.4 i / 1.4 S / 1.2 i | 12ST, 13NB, 14NV, C12NZ, C13N, C14NZ | 45–72 hp | 1982–1993 |
| OPEL | CORSA B (S93) 1.2 i / 1.4 i / 1.4 Si / 1.6 GSI 16V / 1.4 i 16V / 1.6 i 16V / 1.4 / 1.3 / 160iS | 12NZ, 13NB, C12NZ, C14NZ, C14SE, C14SEL, C16SE, C16SEL, C16XE, X12SZ, X14XE, X16XE | 45–109 hp | 1993–2004 |
| OPEL | CORSA B Estate (S93) 1.4 i 16V | X14XE | 90 hp | 1999–2002 |
| OPEL | CORSA B Fourgon/berline à hayon (S93) 1.4 i / 1.2 | C12NZ, C14NZ | 45–60 hp | 1994–2001 |
| OPEL | CORSA C (X01) 1.6 / 1.8 / 1.4 | 14SE, C14SE, C16SE, Z14XE, Z16SE, Z18XEL | 82–125 hp | 2000–2009 |
| OPEL | CORSA CLASSIC B Saloon 1.4 / 160i | C14NZ, C16SE, Z14XE | 60–102 hp | 1994–2004 |
| OPEL | CORSA CLASSIC C Saloon (X01) 1.6 / 1.4 | C14SE, C16SE, Z16SE | 90–102 hp | 2002–2008 |
| OPEL | CORSA UTILITY C Pick-up 1.4 | C14SE | 90 hp | 2004–2010 |
| OPEL | KADETT D (31_-34_, 41_-44_) 1.2 / 1.3 N / 1.3 S | 12ST, 13N, 13S | 55–75 hp | 1979–1984 |
| OPEL | KADETT D (32_,37_,39, _42) 1.3 N / 1.3 S | 13S, C13N | 60–75 hp | 1979–1984 |
| OPEL | KADETT D Estate (35_, 36_, 45_, 46_) 1.3 N / 1.3 S | 13N, 13S | 60–75 hp | 1979–1984 |
| OPEL | KADETT E (T85) 1.3 N / 1.3 S / 1.4 S / 1.6 i / 1.6 S / 1.4 i / 1.3 i Cat / 1.6 i Cat / 1.6 | 13N, 13NB, 13S, 14NV, 16SV, C13N, C14NZ, C16LZ, C16NZ, E16NZ, E16SE | 60–102 hp | 1984–1991 |
| OPEL | KADETT E Hatchback (T85) 1.3 N / 1.3 S / 1.4 S / 1.6 i / 1.6 S / 1.4 i / 1.3 i Cat / 1.6 i Cat / 1.3 | 13N, 13NB, 13S, 14NV, 16SV, C13N, C14NZ, C14SE, C16LZ, C16NZ, E16NZ | 60–82 hp | 1984–1991 |
| OPEL | KADETT E Estate (T85) 1.3 N / 1.3 S / 1.4 S / 1.6 i / 1.6 / 1.4 i / 1.3 i Cat / 1.6 i Cat / 1.3 | 13N, 13NB, 13S, 14NV, 16SV, C13N, C14NZ, C16LZ, C16NZ, E16NZ | 60–82 hp | 1984–1991 |
| OPEL | KADETT E Combo (T85) 1.3 N / 1.3 S / 1.6 / 1.4 S / 1.6 i / 1.4 i | 13N, 13S, 14NV, 16SV, C14NZ, C16NZ | 60–82 hp | 1986–1994 |
| OPEL | KADETT E Convertible (T85) 1.6 i / 1.3 S / 1.6 i Cat / 1.4 i / 1.4 S | 13S, 14NV, 16SV, C14NZ, C16LZ, C16NZ, E16NZ | 60–82 hp | 1986–1993 |
| OPEL | KADETT E Fourgon/Estate (T85) 1.4 i / 1.6 i / 1.3 N | 13N, 13NB, C14NZ, C16NZ | 60–75 hp | 1984–1993 |
| OPEL | MANTA B (58_, 59_) 1.3 N / 1.3 S | 13N, 13S | 60–75 hp | 1979–1986 |
| OPEL | MANTA B CC (53_, 55_) 1.3 N / 1.3 S | 13N, 13S | 60–75 hp | 1979–1986 |
| OPEL | MERIVA A MPV (X03) 1.8 / 1.6 / 1.6 16V | Z16SE, Z16XE, Z16XEP | 87–125 hp | 2003–2010 |
| OPEL | SIGNUM Hatchback (Z03) 1.8 | Z18XER | 122–140 hp | 2003–2008 |
| OPEL | TIGRA (S93) 1.4 16V / 1.6 16V | C16SEL, X14XE, X16XE | 86–106 hp | 1994–2000 |
| OPEL | VECTRA A (J89) 1.6 i / 1.6 / 1.4 S | 14NV, 16SV, C16NZ, E16NZ, X16SZ | 71–82 hp | 1988–1995 |
| OPEL | VECTRA A Hatchback (J89) 1.6 i / 1.6 i Cat / 1.6 S / 1.4 S / 1.6 | 14NV, 16SV, C16NZ, E16NZ, X16SZ | 71–88 hp | 1988–1995 |
| OPEL | VECTRA B (J96) 1.6 i / 1.6 i 16V / 1.8 i 16V / 1.6 GL | 16SV, X16SZR, X16XEL, X18XE1, Y16XE, Z16XE, Z18XEL | 75–125 hp | 1995–2002 |
| OPEL | VECTRA B Hatchback (J96) 1.6 i / 1.6 i 16V / 1.8 i 16V | X16SZR, X16XEL, X18XE1, Y16XE, Z16XE, Z18XEL | 75–125 hp | 1995–2003 |
| OPEL | VECTRA B Estate (J96) 1.6 i / 1.6 i 16V / 1.8 i 16V | X16SZR, X16XEL, X18XE1, Y16XE, Z16XE, Z18XEL | 75–125 hp | 1996–2003 |
| OPEL | VECTRA C (Z02) 1.8 16V / 1.6 16V / 1.8 / 1.6 | Z16XE, Z16XEP, Z18XEL, Z18XER | 100–140 hp | 2002–2008 |
| OPEL | VECTRA C Estate (Z02) 1.8 / 1.6 | Z16XEP, Z18XER | 105–140 hp | 2003–2008 |
| OPEL | VECTRA C GTS (Z02) 1.8 16V / 1.6 / 1.8 | Z16XEP, Z18XEL, Z18XER | 100–140 hp | 2002–2008 |
| OPEL | ZAFIRA / ZAFIRA FAMILY B (A05) 1.6 / 1.8 / 1.6 CNG / 1.8 LPG / 1.6 FlexFuel | Z16XEP, Z16XER, Z16YNG, Z18XER | 94–140 hp | 2005–2015 |
| OPEL | ZAFIRA A MPV (T98) 1.6 16V / 1.8 16V / 1.6 CNG / 1.6 / 1.6 LPG | X16XEL, X18XE1, Z16XE, Z16XEP, Z16YNG | 97–125 hp | 1999–2005 |
| OPEL | ZAFIRA B Fourgon/monospace (A05) 1.8 VAN / 1.6 CNG VAN | Z16YNG, Z18XER | 94–140 hp | 2005–2015 |
