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1.8L 16v - 4G93
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1.8L 16v - 4G93
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Set of 8 trimetal connecting rod half-bearings for Mitsubishi 4G91, 4G92, 4G93.
The 4G91, 4G92 and 4G93 are Mitsubishi's 1.5, 1.6 and 1.8 litre 16-valve four-cylinder engines, in naturally aspirated or turbocharged (4G93-T) form and in direct injection (GDI) versions, fitted to the Carisma, Colt, Lancer, Mirage, Galant, Pajero Pinin, Space Star, Space Wagon and to the Proton Wira and Satria. ACL lists a single bearing set for these engines: same crankpin diameter, a single set covers the family.
From the factory, this engine is 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 44.980 / 45.000 mm Housing bore Ø 48.000 / 48.015 mm Width 16.8 mm |
| Reference | Brand and treatment | Size | Wall thickness (mm) |
|---|---|---|---|
| 4B8036H-STD | ACL Race - Untreated | Standard | 1.492 |
| 4B8036H-.25 | ACL Race - Untreated | +0.25 | 1.617 |
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 | 0.049 to 0.058 mm |
| +0.25 mm | Journal reground to 0.25 mm | 0.049 to 0.058 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 4G91, 4G92 and 4G93 four-cylinder engines of the following Mitsubishi and Proton models:
| Brand | Model (chassis) | Engine code | Power | Years |
|---|---|---|---|---|
| Mitsubishi | CARISMA (DA_) 1.6 (DA1A) | 4G92 (SOHC 16V) | 90–103 hp | 1995–2006 |
| Mitsubishi | CARISMA (DA_) 1.8 (DA2A) | 4G93 (SOHC 16V) | 116 hp | 1995–1997 |
| Mitsubishi | CARISMA (DA_) 1.8 16V GDI (DA2A) / 1.8 GDI (DA2A) | 4G93 (DOHC 16V GDI) | 122–125 hp | 1997–2006 |
| Mitsubishi | CARISMA (DA_) 1.8 MSX - 16V (DA2A) | 4G93 (DOHC 16V) | 140 hp | 1995–1997 |
| Mitsubishi | CARISMA Saloon (DA_) 1.6 (DA1A) | 4G92 (SOHC 16V) | 90–103 hp | 1996–2006 |
| Mitsubishi | CARISMA Saloon (DA_) 1.8 (DA2A) | 4G93 (SOHC 16V) | 115 hp | 1996–1997 |
| Mitsubishi | CARISMA Saloon (DA_) 1.8 16V GDI (DA2A) / 1.8 GDI (DA2A) | 4G93 (DOHC 16V GDI) | 122–125 hp | 1997–2006 |
| Mitsubishi | COLT IV (CA_A) 1.6 (CA4A) / 1.6 4WD (CC4A) / 1.6 GLXi 16V (CA4A) | 4G92 (SOHC 16V) | 90–114 hp | 1992–1996 |
| Mitsubishi | COLT IV (CA_A) 1.8 GTi 16V (CA5A) | 4G93 (DOHC 16V) | 140 hp | 1992–1996 |
| Mitsubishi | COLT V (CJ_, CP_) 1.8 (CJ5A) | 4G93 (SOHC 16V) | 148 hp | 1997–2001 |
| Mitsubishi | COLT V (CJ_, CP_) 1600 (CJ4A) / 1600 GLX (CJ4A) | 4G92 (SOHC 16V) | 90–103 hp | 1996–2003 |
| Mitsubishi | DION MPV (CR_W) 1.8 GDI (CR5W) / 1.8 GDI 4WD (CR5W) | 4G93-T (DOHC 16V GDI) | 165 hp | 2002–2005 |
| Mitsubishi | ECLIPSE Convertible (D5_A) 1.8 | 4G93 (SOHC 16V) | 141 hp | 1999–2005 |
| Mitsubishi | ECLIPSE Convertible 1.8 | 4G93 (SOHC 16V) | 139 hp | 1994–1999 |
| Mitsubishi | EXPO LRV Estate 1.8 (N11W) / 1.8 AWD (N21W) | 4G93 (SOHC 16V) | 114 hp | 1991–1994 |
| Mitsubishi | FTO Coupé (DE_A) 1.8 (DE2A) | 4G93 (SOHC 16V) | 125 hp | 1994–2001 |
| Mitsubishi | GALANT VII (E5_A, E7_A, E8_A) 1.8 (E52A) / 1.8 GLSI (E52A) | 4G93 (SOHC 16V) | 116–126 hp | 1992–1996 |
| Mitsubishi | GALANT VII Saloon (E5_A, E7_A, E8_A) 1.8 (E52A) / 1.8 GLSI (E52A) | 4G93 (SOHC 16V) | 116–126 hp | 1992–1996 |
| Mitsubishi | GALANT VIII (EA_) 1.8 GDi (EA1A) | 4G93 (DOHC 16V GDI) | 140 hp | 1997–2001 |
| Mitsubishi | LANCER IV Hatchback (C6_A, C7_A) 1.6 16V (C76A, C66A) / 1.6 4WD (C76A, C66A) | 4G92 (SOHC 16V) | 113–114 hp | 1992–1994 |
| Mitsubishi | LANCER IV Hatchback (C6_A, C7_A) 1.8 GTi 16V (C69A) | 4G93 (DOHC 16V) | 140 hp | 1992–1993 |
| Mitsubishi | LANCER V (CB_A, CD_A, CE_A) 1.6 (CB4A) / 1.6 16V (CB4A) / 1.6 16V 4WD (CD4A) | 4G92 (SOHC 16V) | 90–120 hp | 1992–1996 |
| Mitsubishi | LANCER V (CB_A, CD_A, CE_A) 1.8 16V (CB5A) / 1.8 EVO AWD (CD5A) / 1.8 GTi (CB5A) | 4G93 (DOHC 16V) | 136–257 hp | 1991–1994 |
| Mitsubishi | LANCER V (CB_A, CD_A, CE_A) 1.8 i (CB5A) | 4G93 (SOHC 16V) | 117 hp | 1992–1996 |
| Mitsubishi | LANCER V (CB_A, CD_A, CE_A) 1.8 i Turbo AWD (CD5A) | 4G93-T (DOHC 16V) | 192 hp | 1992–1996 |
| Mitsubishi | LANCER V Hatchback (CA_A, CC_A) 1.6 i (CA4A) | 4G92 (SOHC 16V) | 97 hp | 1992–1996 |
| Mitsubishi | LANCER V Coupé (CC) 1.8 (CC5A) | 4G93 (DOHC 16V) | 156 hp | 1992–1996 |
| Mitsubishi | LANCER V Coupé (CC) 1.8 i (CC5A) | 4G93 (SOHC 16V) | 117 hp | 1992–1996 |
| Mitsubishi | LANCER V Estate (CB_W, CD_W) 1.6 16V (CB4W) / 1.6 16V 4WD (CD4W) | 4G92 (SOHC 16V) | 113 hp | 1992–2003 |
| Mitsubishi | LANCER V Estate (CB_W, CD_W) 1.8 4WD (CD5W) / 1.8 i (CB5) / 1.8 i (CB5W) | 4G93 (SOHC 16V) | 117–120 hp | 1992–2003 |
| Mitsubishi | LANCER V Estate (CB_W, CD_W) 1.8 4WD (CD5W) | 4G93-T (DOHC 16V) | 215 hp | 1995–2003 |
| Mitsubishi | LANCER VI (CJ_, CP_, CK_) 1.6 16V / 1.6 16V (CK4A) | 4G92 (SOHC 16V) | 90–114 hp | 1995–2003 |
| Mitsubishi | LANCER VI (CJ_, CP_, CK_) 1.8 / 1.8 i (CK5) | 4G93 (SOHC 16V) | 117–124 hp | 1995–2003 |
| Mitsubishi | LANCER VI (CJ_, CP_, CK_) 1.8 16V | 4G93-T (DOHC 16V) | 205 hp | 1995–2003 |
| Mitsubishi | LANCER VI (CJ_, CP_, CK_) 1.8 GDI 4WD | 4G93-T (DOHC 16V GDI) | 165 hp | 2000–2003 |
| Mitsubishi | LANCER VI (CJ_, CP_, CK_) 1.8 GDI | 4G93 (DOHC 16V GDI) | 131 hp | 2000–2003 |
| Mitsubishi | LANCER VI Coupé (CJ_A, CE) 1.8 i (CJ5) | 4G93 (SOHC 16V) | 117 hp | 1996–2004 |
| Mitsubishi | LANCER VI Convertible (CJ_A) 1.8 MR (CJ5A, CE) | 4G93 (SOHC 16V) | 117 hp | 2001–2003 |
| Mitsubishi | LANCER VII (CS_A, CT_A) 1.8 / 1.8 (CS5A) | 4G93 (SOHC 16V) | 121–140 hp | 2000–2013 |
| Mitsubishi | LANCER VII (CS_A, CT_A) 1.8 AWD (CS5A) | 4G93 (DOHC 16V) | 131 hp | 2000–2003 |
| Mitsubishi | LANCER VII (CS_A, CT_A) 1.8 GDI AWD (CS5A) / 1.8 SEi (CS5A) / 1.8 SEi Limited (CS5A) | 4G93 (DOHC 16V GDI) | 122–131 hp | 2000–2007 |
| Mitsubishi | LANCER VII Estate (CS_W, CT_W) 1.8 GDi T (CS5W) / 1.8 GDi T AWD (CS5W) | 4G93 (DOHC 16V GDI) | 114 hp | 2003–2008 |
| Mitsubishi | LANCER VII Estate (CS_W, CT_W) 1.8 GDi T (CS5W) | 4G93-T (DOHC 16V GDI) | 165 hp | 2003–2008 |
| Mitsubishi | MIRAGE IV Saloon 1.6 / 1.6 4WD | 4G92 (SOHC 16V) | 120 hp | 1991–1995 |
| Mitsubishi | MIRAGE IV Saloon 1.8 (CQ5A) | 4G93 (DOHC 16V GDI) | 135 hp | 1999–2002 |
| Mitsubishi | MIRAGE IV Saloon 1.8 / 1.8 Gsi (CB5A) | 4G93 (SOHC 16V) | 114–140 hp | 1991–1995 |
| Mitsubishi | MIRAGE IV Hatchback (CJ_A, CL_A, CA_A, CC_A) 1.5 (CA3A) | 4G91-C (DOHC 16V) | 97 hp | 1991–1993 |
| Mitsubishi | MIRAGE IV Hatchback (CJ_A, CL_A, CA_A, CC_A) 1.5 i (CA3A) | 4G91 (DOHC 16V) | 116 hp | 1991–1995 |
| Mitsubishi | MIRAGE IV Hatchback (CJ_A, CL_A, CA_A, CC_A) 1.6 / 1.6 (CJ4A) / 1.6 4WD (CL4A) | 4G92 (SOHC 16V) | 105–119 hp | 1991–1996 |
| Mitsubishi | MIRAGE IV Hatchback (CJ_A, CL_A, CA_A, CC_A) 1.6 ZR (CJ4A) | 4G92 (DOHC 16V) | 174 hp | 1995–1999 |
| Mitsubishi | MIRAGE IV Coupé 1.8 | 4G93 (SOHC 16V) | 114 hp | 1992–1996 |
| Mitsubishi | MIRAGE IV Estate 1.8 Gti (CS5W) | 4G93 (SOHC 16V) | 140 hp | 2001–2003 |
| Mitsubishi | MIRAGE V Saloon (CK_A) 1.8 / 1.8 (CK5A) | 4G93 (SOHC 16V) | 114–140 hp | 1995–2001 |
| Mitsubishi | MIRAGE V Saloon (CK_A) 1.8 4WD (CM5A) | 4G93-T (DOHC 16V) | 207 hp | 1995–1999 |
| Mitsubishi | MIRAGE V Hatchback (CJ_A) 1.6 (CJ4A) | 4G92 (SOHC 16V) | 114 hp | 1999–2003 |
| Mitsubishi | MIRAGE V Hatchback (CJ_A) 1.6 (CJ4A) | 4G92 (DOHC 16V) | 174 hp | 1995–1999 |
| Mitsubishi | MIRAGE V Coupé (CJ - CM) 1.6 ZR (CJ4A) | 4G92 (DOHC 16V) | 174 hp | 1995–1999 |
| Mitsubishi | MIRAGE V Coupé (CJ - CM) 1.8 | 4G93 (SOHC 16V) | 113 hp | 1996–2002 |
| Mitsubishi | PAJERO II (V3_W, V2_W, V4_W, V5_W) 1.8 GDi 4WD | 4G93 (DOHC 16V GDI) | 131 hp | 1997–1999 |
| Mitsubishi | PAJERO PININ I (H6_W, H7_W) 1.8 (H61W, H71W) / 1.8 4WD / 1.8 4WD (H76W) / 1.8 GDI (H66W, H76W) | 4G93 (DOHC 16V GDI) | 117–160 hp | 1999– |
| Mitsubishi | PAJERO PININ I (H6_W, H7_W) 1.8 (H61W, H71W) | 4G93-T (DOHC 16V GDI) | 131 hp | 1999–2007 |
| Mitsubishi | PAJERO PININ I (H6_W, H7_W) 1.8 (H76W, H66W) | 4G93 (SOHC 16V) | 114 hp | 2001–2007 |
| Mitsubishi | PAJERO SPORT I (K7_, K9_) 1.8 4WD (K90W) | 4G93 (SOHC 16V) | 114 hp | 2001–2005 |
| Mitsubishi | PAJERO SPORT I (K7_, K9_) 1.8 GDi 4WD (K90W) | 4G93 (DOHC 16V GDI) | 120 hp | 1999–2001 |
| Mitsubishi | SPACE RUNNER MPV (N1_W, N2_W) 1.8 (N11W) / 1.8 4WD (N21W) | 4G93 (SOHC 16V) | 116–122 hp | 1991–1999 |
| Mitsubishi | SPACE STAR MPV (DG_A) 1.6 | 4G92 (SOHC 16V) | 98 hp | 2001–2004 |
| Mitsubishi | SPACE STAR MPV (DG_A) 1.8 GDI (DG5A) | 4G93 (DOHC 16V GDI) | 118–122 hp | 1998–2004 |
| Mitsubishi | SPACE STAR MPV (DG_A) 1.8 MPI (DG5A) | 4G93 (DOHC 16V) | 112 hp | 2002–2004 |
| Mitsubishi | SPACE WAGON (N3_W, N4_W) 1.8 (N31W) / 1.8 4WD (N41W) | 4G93 (SOHC 16V) | 122 hp | 1991–1998 |
| Mitsubishi | SPACE WAGON (N9_W, N8_W) 1.8 | 4G93 (SOHC 16V) | 126 hp | 2002–2004 |
| Proton | SATRIA (C9_M) 1.6 (C98M) | 4G92 (SOHC 16V) | 120 hp | 1995–2002 |
| Proton | WIRA Hatchback (C9_L) 1.6 | 4G92 (SOHC 16V) | 111 hp | 1995–2002 |
| Proton | WIRA 1.6 (C98S) | 4G92 (SOHC 16V) | 111 hp | 1997–2005 |
ACL Race Series Trimetal Connecting Rod Bearing Set, Part Number 4B8036H
