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3.5L 24v - VQ35DE
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3.5L 24v - VQ35DE
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Set of 8 tri-metal crankshaft main bearing half shells for the Nissan VQ V6 engines (Ø 59.95 mm).
The VQ is Nissan's family of V6 engines with twin overhead camshafts and 24 valves. This page covers the VQ20DE, VQ25DE, VQ25DET, VQ30DE, VQ30DET and VQ35DE, fitted notably to the Nissan 350Z, Maxima, Murano, Pathfinder, Cefiro, Stagea, Gloria, Cedric and Leopard. ACL and King offer a single main bearing set for all these versions.
The crankshaft of these engines runs on four 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.
A tri-metal 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 four main bearings.
An aluminium bi-metal takes around 8,000 psi, a performance tri-metal up to 12,000 psi, 50% more. Hence better resistance and better durability on turbocharged, supercharged and high-revving engines.
| ACL bearings Crankshaft journal Ø 59.951 / 59.975 mm Housing bore Ø 63.993 / 64.017 mm Width 20.12 mm | King bearings Crankshaft journal Ø 59.952 / 59.974 mm Housing bore Ø 63.993 / 64.016 mm Width 20.1 mm |
| Reference | Brand and treatment | Size | Wall thickness (mm) |
|---|---|---|---|
| 4M2633H-STD | ACL Race - Untreated | Standard | 2.009 |
| 4M2633HX-STD | ACL Race - Untreated | Std, increased clearance (HX) | 1.996 |
| 4M2633H-.025 | ACL Race - Untreated | +0.025 | |
| 4M2633H-.25 | ACL Race - Untreated | +0.25 | |
| MB4058XP | King Racing - Untreated | Standard | 2.007 |
| MB4058XP STDX | King Racing - Untreated | Std, increased clearance (STDX) | 1.994 |
| MB4058XP0.25 | King Racing - Untreated | +0.25 | 2.134 |
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 | King XP |
|---|---|---|---|
| Standard (STD) | Standard journal, not reground | 0.061 to 0.073 mm | 0.060 mm - 0.073 mm |
| Increased clearance (HX / STDX) | Wider clearance: high oil flow, high rpm | 0.086 to 0.098 mm | 0.085 mm - 0.098 mm |
| +0.025 / +0.026 mm | Polished journal | 0.061 to 0.073 mm | |
| +0.25 mm | Journal reground to 0.25 mm | 0.061 to 0.073 mm | 0.060 mm - 0.073 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.
The ACL and King main 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. |
 | King 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. |
| 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 +0.25 mm (+ increased clearance HX) | Standard to +0.25 mm (+ increased clearance STDX) |
This main bearing set fits the Nissan VQ V6 engines (engine codes VQ20DE, VQ25DE, VQ25DET, VQ30DE, VQ30DET and VQ35DE) of the following vehicles:
| Brand | Model (chassis) | Engine code | Power | Years |
|---|---|---|---|---|
| Infiniti | FX | VQ35DE | 280 hp | 2003–2008 |
| Infiniti | G Saloon | VQ35DE | 260–284 hp | 2002– |
| Infiniti | G Coupe | VQ35DE | 260–299 hp | 2002–2007 |
| Infiniti | I30 | VQ30DE | 193–230 hp | 1997– |
| Infiniti | I35 Saloon | VQ35DE | 256–258 hp | 2001–2004 |
| Infiniti | JX SUV (L50) | VQ35DE | 256–269 hp | 2012–2013 |
| Infiniti | M35 | VQ35DE | 280–284 hp | 2005– |
| Infiniti | QX4 | VQ35DE | 243 hp | 2000–2003 |
| Infiniti | QX60 | VQ35DE | 256–277 hp | 2012– |
| Isuzu | Filly | VQ35DE | 240–241 hp | 1999–2002 |
| Mitsuoka | Galue Saloon | VQ25DE | 185 hp | 2004– |
| Mitsuoka | Galue Saloon | VQ35DE | 252 hp | 2010–2014 |
| Nissan | 350Z Coupe (Z33) | VQ35DE | 280–305 hp | 2002–2008 |
| Nissan | 350Z Roadster (Z33) | VQ35DE | 280–305 hp | 2003–2007 |
| Nissan | Altima (L31) | VQ35DE | 245–264 hp | 2001–2006 |
| Nissan | Altima (L32) | VQ35DE | 273–286 hp | 2006–2013 |
| Nissan | Altima (L33) | VQ35DE | 249–273 hp | 2012– |
| Nissan | Altima Coupe (CL32) | VQ35DE | 273–286 hp | 2007–2013 |
| Nissan | Bassara (JU30) | VQ30DE | 220 hp | 1999–2003 |
| Nissan | Cedric (Y33) | VQ25DE, VQ30DE | 160–190 hp | 1995–1999 |
| Nissan | Cedric X (Y34) | VQ30DET | 280 hp | 2000–2004 |
| Nissan | Cefiro II Saloon (A32) | VQ20DE, VQ25DE, VQ30DE | 140–193 hp | 1994–1999 |
| Nissan | Cefiro III Saloon (A33) | VQ20DE, VQ25DE, VQ30DE, VQ35DE | 140–300 hp | 1998–2003 |
| Nissan | Cima (F50) | VQ30DET | 280 hp | 2001–2010 |
| Nissan | Cima (Y33) | VQ30DET | 269 hp | 1996–2001 |
| Nissan | Elgrand (E50) | VQ35DE | 241 hp | 2000–2002 |
| Nissan | Elgrand (E51) | VQ25DE, VQ35DE | 186–241 hp | 2002–2010 |
| Nissan | Elgrand (E52) | VQ35DE | 264–300 hp | 2010– |
| Nissan | Fuga I (_Y50) | VQ25DE, VQ35DE | 209–280 hp | 2004–2009 |
| Nissan | Gloria (Y33) | VQ25DE, VQ30DE, VQ30DET | 190–269 hp | 1995–1999 |
| Nissan | Gloria VIII (Y31) | VQ30DET | 269 hp | 1995–1999 |
| Nissan | Gloria XI (Y34) | VQ30DET | 280 hp | 2000–2004 |
| Nissan | Leopard (Y33) | VQ30DE, VQ30DET | 220–269 hp | 1995–2001 |
| Nissan | Leopard Estate (Y33) | VQ30DE | 220 hp | 1995–2001 |
| Nissan | Maxima / Maxima QX IV (A32) | VQ20DE, VQ25DE, VQ30DE | 140–214 hp | 1995–2000 |
| Nissan | Maxima / Maxima QX IV Station Wagon (A32) | VQ20DE, VQ25DE, VQ30DE | 140–193 hp | 1997–2000 |
| Nissan | Maxima / Maxima QX V (A33) | VQ20DE, VQ25DE, VQ30DE, VQ35DE | 140–258 hp | 1999–2003 |
| Nissan | Maxima VI (A34) | VQ35DE | 258–290 hp | 2003–2008 |
| Nissan | Maxima VII (A35) | VQ30DE, VQ35DE | 190–294 hp | 2008– |
| Nissan | Maxima VIII (A36) | VQ35DE | 300–305 hp | 2015– |
| Nissan | Murano I (Z50) | VQ35DE | 231–249 hp | 2002–2009 |
| Nissan | Murano II (Z51) | VQ35DE | 249–269 hp | 2007–2014 |
| Nissan | Murano II Convertible | VQ35DE | 268 hp | 2010– |
| Nissan | Murano II VAN (Z51) | VQ35DE | 256 hp | 2013–2014 |
| Nissan | Murano III (Z52_) | VQ35DE | 249–264 hp | 2014– |
| Nissan | Murano III VAN (Z52_) | VQ35DE | 264 hp | 2014– |
| Nissan | Pathfinder II (R50) | VQ35DE | 243 hp | 2000–2004 |
| Nissan | Pathfinder IV (R52) | VQ35DE | 249–264 hp | 2012– |
| Nissan | Presage (U30) | VQ30DE | 220 hp | 2001–2003 |
| Nissan | Presage (U31) | VQ35DE | 231 hp | 2003–2009 |
| Nissan | Quest (E52) | VQ35DE | 264–277 hp | 2012– |
| Nissan | Quest (V42) | VQ35DE | 232–243 hp | 2003– |
| Nissan | Skyline (V35) | VQ35DE | 272 hp | 2001–2007 |
| Nissan | Skyline Coupe (V35) | VQ35DE | 280 hp | 2003–2007 |
| Nissan | Stagea (M35) | VQ25DET, VQ35DE | 272–280 hp | 2001–2007 |
| Nissan | Teana I (J31) | VQ35DE | 231–245 hp | 2003–2008 |
| Nissan | Teana II (J32) | VQ25DE, VQ35DE | 179–252 hp | 2008–2013 |
| Nissan | Teana III (J33, L33) | VQ35DE | 249 hp | 2014– |
| Nissan | Terrano II (R20) | VQ35DE | 241 hp | 1994–2003 |
| Nissan | Terrano Regulus (R50) | VQ35DE | 253 hp | 2000–2003 |
| Nissan (Dfac) | Murano II (Z51) | VQ35DE | 310 hp | 2011–2015 |
| Nissan (Dfac) | Teana (J31) | VQ35DE | 245 hp | 2004–2008 |
| Nissan (Dfac) | Teana (J32Z) | VQ25DE, VQ35DE | 185–252 hp | 2008–2013 |
| Saipa | Nissan Maxima | VQ30DE | 200 hp | 2011–2016 |
| Saipa | Nissan Teana | VQ25DE | 182 hp | 2011–2015 |
| Samsung | SM5 (A32) | VQ20DE, VQ25DE | 144–173 hp | 1998–2004 |
| Samsung | SM5 (L43) | VQ25DE | 178 hp | 2011– |
| Samsung | SM7 (EX2) | VQ35DE | 217 hp | 2004–2011 |
