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- BMW_M42 displacement "1796.0".
- BMW_M42 abstract "The BMW M42 is a straight-4 DOHC piston engine produced from 1989 to 1996. Following BMW's typical construction techniques, the motor incorporates a durable cast-iron block and aluminum head. Weight-saving measures include aluminum chain cases, oil sump, motor mount arms, accessory mounts and a cartridge-style oil filter housing. Closely related to the single cam M40, the DOHC 16 valve head and chain-driven cams provided a notable increase in power. It was used in North American versions of the E36 318i instead of the M40. The M42 also incorporated other performance features such as a forged steel crankshaft and welded tubular stainless steel exhaust manifold instead of the more typical cast-iron items. BMW also fitted hydraulic motor mounts to decrease the inline four's inherent noise, vibration and harshness (NVH) compared to the smoother inline sixes already in production at that time.The M42 went through several minor revisions during production. All versions featured a low-maintenance timing chain with a self-adjusting hydraulic chain tensioner and hydraulic valve tappets. The M42 also incorporated the Bosch Motronic M1.7 DME, eliminating a distributor in favor of fully electronic ignition timing. The DME was configured to fire four individual remotely mounted coils. Furthermore, in markets that required emissions controls, the DME also incorporated an upstream O2 sensor and three-way catalyst.Early models of the M42 were subject to several recalls. The most common recall was due to frequent failures with a profile gasket sealing the lower cam chain case to the underside of the cylinder head. This gasket seals the primary coolant passage within the timing chain case. A significant failure would thus discharge pressurized steam and hot coolant into the timing chain case. In many cases this coolant rapidly contaminates the motor oil in the sump, causing main bearing failure. Most failures were noted with poorly maintained motors, especially where coolant specifications and mixtures were not observed. BMW updated the profile gasket material and instituted a program to repair motors under warranty. In extreme cases, the aluminum mating surfaces in the head and chain case would corrode.The earliest versions of the M42 also developed problems with the cam chain drive. The hydraulic tensioner, chain guides, idler wheel and rear lower chain case have all been updated to resolve problems with mechanical wear. Most of these changes were implemented in the M42's closely related successor, the M44. These parts can all be retrofitted to the M42 to improve durability.When installed in the BMW E30, a two-piece oil pan with a removable front sump was fitted to the M42. This design has two notable problems. The first is a vulnerability to road hazards, as the sump sits fairly low and is not protected by a subframe or cross-member. The aluminum pan will crack instead of deform on significant impacts. Steel skid plates have been developed to resolve this problem and are highly recommended in cases where the front suspension has been modified to improve handling. The second problem is far more significant - the upper oil pan casting incorporates the oil pump's supply passage, and is sealed to the crankcase oil filter housing with a paper gasket. Thermal cycles and engine vibration tend to loosen the six 10mm upper pan mounting bolts inside the motor. Routinely, a loose 10mm bolt or two can be found rattling around high-mileage M42 sumps. If not caught in time, the paper gasket sealing the oil pickup passage can be forced into the crankcase by oil pressure, potentially causing a major loss of oil pressure and/or aeration of the motor oil. Thus it is strongly recommended that any new owner of an early M42 remove the lower pan to inspect these bolts. A permanent solution is to remove & clean the six internal 10mm bolts, apply a thread-locking sealant to the bolts, and re-assemble.In the final versions of the M42, BMW engineered a dual length intake manifold (called \"DISA\" by BMW)".
- BMW_M42 displacement "0.001796".
- BMW_M42 manufacturer BMW.
- BMW_M42 predecessor BMW_M40.
- BMW_M42 productionEndYear "1989".
- BMW_M42 productionStartYear "1989".
- BMW_M42 successor BMW_M44.
- BMW_M42 wikiPageExternalLink www.m42club.com.
- BMW_M42 wikiPageExternalLink 318is.htm.
- BMW_M42 wikiPageExternalLink m42.html.
- BMW_M42 wikiPageID "882085".
- BMW_M42 wikiPageLength "7318".
- BMW_M42 wikiPageOutDegree "32".
- BMW_M42 wikiPageRevisionID "686953714".
- BMW_M42 wikiPageWikiLink Airbox.
- BMW_M42 wikiPageWikiLink BMW.
- BMW_M42 wikiPageWikiLink BMW_3_Series_(E30).
- BMW_M42 wikiPageWikiLink BMW_3_Series_(E36).
- BMW_M42 wikiPageWikiLink BMW_M40.
- BMW_M42 wikiPageWikiLink BMW_M43.
- BMW_M42 wikiPageWikiLink BMW_M44.
- BMW_M42 wikiPageWikiLink BMW_Z3.
- BMW_M42 wikiPageWikiLink Catalytic_converter.
- BMW_M42 wikiPageWikiLink Category:BMW_engines.
- BMW_M42 wikiPageWikiLink Compression_ratio.
- BMW_M42 wikiPageWikiLink Dry_sump.
- BMW_M42 wikiPageWikiLink Engine_displacement.
- BMW_M42 wikiPageWikiLink Fuel_injection.
- BMW_M42 wikiPageWikiLink Hydraulic_tappet.
- BMW_M42 wikiPageWikiLink Inline-four_engine.
- BMW_M42 wikiPageWikiLink List_of_BMW_engines.
- BMW_M42 wikiPageWikiLink Motronic.
- BMW_M42 wikiPageWikiLink Noise,_vibration,_and_harshness.
- BMW_M42 wikiPageWikiLink Overhead_camshaft.
- BMW_M42 wikiPageWikiLink Reciprocating_engine.
- BMW_M42 wikiPageWikiLink Robert_Bosch_GmbH.
- BMW_M42 wikiPageWikiLink Tensioner.
- BMW_M42 wikiPageWikiLink Variable-length_intake_manifold.
- BMW_M42 wikiPageWikiLinkText "BMW M42".
- BMW_M42 wikiPageWikiLinkText "M42".
- BMW_M42 wikiPageWikiLinkText "M42B18".
- BMW_M42 configuration Inline-four_engine.
- BMW_M42 configuration Overhead_camshaft.
- BMW_M42 displacement "1796.0".
- BMW_M42 manufacturer BMW.
- BMW_M42 name "BMW M42".
- BMW_M42 predecessor BMW_M40.
- BMW_M42 production "1989".
- BMW_M42 successor BMW_M44.
- BMW_M42 wikiPageUsesTemplate Template:BMW_motor_vehicle_engine_timeline,_1980s-2000s.
- BMW_M42 wikiPageUsesTemplate Template:Commons_category.
- BMW_M42 wikiPageUsesTemplate Template:Convert.
- BMW_M42 wikiPageUsesTemplate Template:Infobox_automobile_engine.
- BMW_M42 wikiPageUsesTemplate Template:Reflist.
- BMW_M42 subject Category:BMW_engines.
- BMW_M42 hypernym Engine.
- BMW_M42 type AutomobileEngine.
- BMW_M42 type Device.
- BMW_M42 type Engine.
- BMW_M42 type Software.
- BMW_M42 type Thing.
- BMW_M42 comment "The BMW M42 is a straight-4 DOHC piston engine produced from 1989 to 1996. Following BMW's typical construction techniques, the motor incorporates a durable cast-iron block and aluminum head. Weight-saving measures include aluminum chain cases, oil sump, motor mount arms, accessory mounts and a cartridge-style oil filter housing. Closely related to the single cam M40, the DOHC 16 valve head and chain-driven cams provided a notable increase in power.".
- BMW_M42 label "BMW M42".
- BMW_M42 sameAs Q796568.
- BMW_M42 sameAs BMW_M42.
- BMW_M42 sameAs BMW_M42.
- BMW_M42 sameAs BMW_M42.
- BMW_M42 sameAs BMW_M42.
- BMW_M42 sameAs m.03lf84.
- BMW_M42 sameAs Q796568.
- BMW_M42 wasDerivedFrom BMW_M42?oldid=686953714.
- BMW_M42 isPrimaryTopicOf BMW_M42.
- BMW_M42 name "BMW M42".