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1.3L 16v - G13B
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1.3L 16v - G13B
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Set of 10 tri-metal crankshaft main bearing half shells for Suzuki G13 engines (Ø 45 mm).
The G13A, G13B, G13BA and G13BB are Suzuki four-cylinder 1.3 litre petrol engines, fitted to the Samurai, Sierra, Swift, Baleno, Jimny and Carry. All the applications listed below share the same crankshaft journal and housing dimensions: a single bearing set covers these engines.
The crankshaft of these engines runs on five main bearings. Each journal turns between two half shells, one seated in the block and the other in the main bearing cap: they carry the crankshaft. The ACL Race Series and KING RACING tri-metal sets shown here replace them on built engines.
Three layers make up a trimetal bearing: the steel back for stiffness, the copper-lead intermediate layer for load capacity, then the anti-friction running layer that protects the main journal. This set includes 10 half shells, that is 5 pairs.
Where an aluminium bi-metal bearing, designed for low to medium loads, withstands about 8,000 psi, a performance trimetal bearing goes up to 12,000 psi: 50% extra margin. That is what keeps it durable on an engine boosted by a turbo or supercharger, or pushed to high rpm.
| ACL bearings Crankshaft journal Ø 44.982 / 44.994 mm Housing bore Ø 48.998 / 49.018 mm Width 18.13 mm | King bearings Crankshaft journal Ø 44.981 / 44.994 mm Housing bore Ø 48.999 / 49.017 mm Width 18.2 mm |
| Reference | Brand and treatment | Size | Wall thickness (mm) |
|---|---|---|---|
| 5M8337H-STD | ACL Race - Untreated | Standard | 2.000 |
| 5M8337HX-STD | ACL Race - Untreated | Std, increased clearance (HX) | 1.987 |
| 5M8337H-.25 | ACL Race - Untreated | +0.25 | |
| 5M8337H-.50 | ACL Race - Untreated | +0.50 | |
| MB5731XP STDX | King Racing - Untreated | Std, increased clearance (STDX) | 1.985 |
| MB5731XP0.25 | King Racing - Untreated | +0.25 | 2.125 |
Between the main journal and the bearing there is a small gap, the running clearance, in which the oil film circulates.
In operation there is no metal-to-metal contact: the main journal turns on this oil film, which supports the whole load. The clearance determines its thickness. A clearance that is too tight hinders oil flow, heats the assembly and promotes seizure; one that is too wide lets oil leak away, weakens the film and makes oil pressure drop. The correct clearance balances oil flow and film strength.
| Size / grade | When to choose it | ACL Race Series | King XP |
|---|---|---|---|
| Standard (STD) | Standard journal, not reground | 0.049 to 0.058 mm | |
| Increased clearance (HX / STDX) | Wider clearance: high oil flow, high rpm | 0.074 to 0.083 mm | 0.070 mm - 0.083 mm |
| +0.25 mm | Journal reground to 0.25 mm | 0.049 to 0.058 mm | 0.045 mm - 0.058 mm |
| +0.50 mm | Journal reground to 0.50 mm | 0.049 to 0.058 mm |
Check at assembly: lay a calibrated strip (Plastigauge) on the journal, tighten the main cap following the manufacturer's procedure, then compare the width of the crushed strip with the gauge to read the clearance.
Designed for engine building and motorsport, these ACL and King trimetal main bearings carry much more load than an original bearing, whether the engine gains power, revs higher or receives a turbo or supercharger. They are available in several sizes: the standard size, +0.25 and +0.50 mm regrind sizes and the HX / STDX version with increased clearance for high-revving engines or engines needing a high oil flow. That makes it possible to put a reground crankshaft back into service without changing range and to set the clearance for the oil and use.
 | ACL Bearing Company has been making high-performance engine bearings in Australia since 1949. Its Race Series offers precise trimetal bearings, available in many sizes and proven in tuned and racing engines worldwide. |
 | King Engine Bearings, an Israeli manufacturer active since the 1960s, produces high-performance engine bearings. Its pMax Black trimetal alloy is designed to withstand heavy loads. |
| Criterion | ACL Race Series | King Racing |
| Cross-section |  |  |
| Type | High-performance trimetal bearing | High-performance trimetal bearing |
| Country of manufacture | Australia | Israel |
| Construction | Trimetal: steel back, copper layer, soft surface | Trimetal: steel back, copper layer, soft surface |
| Alloy | Race Series (copper-lead) | pMax Black (hardened copper-lead) |
| Protective coating | No | No |
| Available sizes | Standard to +0.50 mm (+ increased clearance HX) | Increased clearance (STDX) and +0.25 mm |
This main bearing set fits the following vehicles fitted with the G13A, G13B, G13BA and G13BB engines:
| Brand | Model (chassis) | Engine code | Power | Years |
|---|---|---|---|---|
| Changan | Benni | G13B | 86 hp | 2006–2010 |
| Chevrolet | Esteem Saloon | G13BB | 86 hp | 1996–2004 |
| Chevrolet | Jimny Closed Off-Road Vehicle (JB) | G13BB | 80 hp | 1998–2006 |
| Chevrolet | Jimny Open Off-Road Vehicle (JB) | G13BB | 80 hp | 1998–2006 |
| Chevrolet | Metro Saloon | G13BA | 68 hp | 1998–2004 |
| Chevrolet | Metro Hatchback | G13B, G13BA | 68–101 hp | 1992–2004 |
| Geo | Metro | G13B, G13BA | 71–101 hp | 1989–1998 |
| Geo | Metro Saloon | G13BA | 71 hp | 1989–1998 |
| Geo | Metro Convertible | G13BA | 71 hp | 1989–1998 |
| Hyundai | Pony (X-1) | G13B | 68 hp | 1985–1989 |
| Hyundai | Pony Saloon (X-1) | G13B | 68 hp | 1985–1989 |
| Maruti | Esteem | G13BA, G13BB | 69–86 hp | 1998–2006 |
| Maruti | Gypsy | G13BB | 81 hp | 2000–2006 |
| Maruti | Gypsy | G13BB | 82 hp | 2000–2006 |
| Maruti | Versa Bus | G13B | 82 hp | 2001–2006 |
| Maruti | Wagon R | G13BB | 76 hp | 1998–2003 |
| Maruti Suzuki | Dzire | G13B | 88 hp | 2008–2012 |
| Maruti Suzuki | Gypsy | G13BB | 82 hp | 2006–2019 |
| Maruti Suzuki | Swift | G13BB | 87 hp | 2008– |
| Maruti Suzuki | Versa Bus | G13B, G13BB | 83–84 hp | 2007–2009 |
| Mitsubishi | Colt II (C1_A) | G13B | 67 hp | 1986–1988 |
| Mitsubishi | Lancer III Station Wagon (C1_V, C3_V) | G13B | 68 hp | 1988–1990 |
| Mitsubishi | Lancer IV (C6_A, C7_A) | G13B | 68–70 hp | 1988–1992 |
| Mitsubishi | Mirage II Hatchback (C10) | G13B | 67 hp | 1986–1988 |
| Mitsubishi | Mirage III Station Wagon | G13B | 67 hp | 1986–1988 |
| Pontiac | Firefly Hatchback | G13BA | 70 hp | 1988–1991 |
| Proton | Persona 300 (C9_M) | G13B | 75 hp | 1996–2000 |
| Santana | Samurai | G13BA | 64 hp | 1991–1994 |
| Subaru | Justy II (JMA, MS) | G13BB | 86 hp | 2001–2003 |
| Suzuki | Alto V (HA12_, HA23_, HA22_) | G13BB | 86 hp | 1998–2000 |
| Suzuki | Baleno (EG) | G13BA, G13BB | 71–85 hp | 1995–2002 |
| Suzuki | Baleno Hatchback (EG) | G13BA, G13BB | 65–85 hp | 1995–2002 |
| Suzuki | Baleno Estate (EG) | G13BB | 86 hp | 1997–2002 |
| Suzuki | Carry Bus | G13BB | 76 hp | 1999–2006 |
| Suzuki | Carry Platform/Chassis (FD, DA5_T, DA6_T) | G13BB | 76–79 hp | 2000–2005 |
| Suzuki | Carry Van (FD) | G13BB | 76–79 hp | 1999– |
| Suzuki | Every Bus (DA52_, DB52_, DA62_, DA32_) | G13BB | 86 hp | 2000–2005 |
| Suzuki | Farmworker Platform/Chassis | G13BB | 80 hp | 2011– |
| Suzuki | Farmworker Pick-up | G13BB | 80 hp | 2011– |
| Suzuki | Grand Vitara II (JT, TE, TD) | G13BB | 80 hp | 2005–2006 |
| Suzuki | Jimny Closed Off-Road Vehicle (SJ, JA, JB) | G13BA | 71 hp | 1988–1998 |
| Suzuki | Jimny Closed Off-Road Vehicle (SN, JB_) | G13BB | 80–86 hp | 1998– |
| Suzuki | Jimny Open Off-Road Vehicle (SJ) | G13BA | 71 hp | 1988–1998 |
| Suzuki | Jimny Open Off-Road Vehicle (SN) | G13BB | 80 hp | 1998– |
| Suzuki | KEI Hatchback | G13BA | 68 hp | 1998– |
| Suzuki | SJ413 (OS) | G13A | 60–64 hp | 1984–1990 |
| Suzuki | SJ413 Open Off-Road Vehicle (OS) | G13A | 64 hp | 1985 |
| Suzuki | Samurai Closed Off-Road Vehicle (SJ_) | G13A, G13BA, G13BB | 60–86 hp | 1984–2004 |
| Suzuki | Samurai Open Off-Road Vehicle (SJ_) | G13A, G13BA | 60–70 hp | 1988–1998 |
| Suzuki | Sierra Open Off-Road Vehicle (SJ) | G13A, G13BA | 64–69 hp | 1984–1999 |
| Suzuki | Sierra Open Off-Road Vehicle (SJ) | G13A | 64 hp | 1984–1990 |
| Suzuki | Swift Convertible (SF413) | G13B, G13BA | 68–101 hp | 1991–1996 |
| Suzuki | Swift I (AA) | G13A, G13B | 64–101 hp | 1984–1989 |
| Suzuki | Swift II Saloon (AH, AJ) | G13BA | 67–71 hp | 1989–1997 |
| Suzuki | Swift II Hatchback (EA, MA) | G13A, G13B, G13BA, G13BB | 68–101 hp | 1989–2003 |
| Suzuki | Vitara (ET, TA, TD) | G13A | 65 hp | 1988–1989 |
| Suzuki | Wagon R+ (MA) | G13BB | 76 hp | 2000– |
| Suzuki (Changan) | Gazelle | G13B | 91 hp | 2009–2016 |
| Suzuki (Changan) | Swift (EZ, MZ) | G13B | 86 hp | 2005–2012 |
| Suzuki (Changan) | Swift (NZ, FZ) | G13B | 91 hp | 2011– |
When a main bearing gives way, the damage quickly spreads beyond the part itself: a scored main journal, debris carried through the whole oil circuit, a crankshaft to regrind at the very least, sometimes a damaged block. A bearing set costs far less than a regrind and is nothing compared with a complete engine rebuild. It is the cheapest part of the crankshaft assembly, yet the one whose failure is most expensive.
