BMW Engine Rebuild
Engine Rebuilds
BMW Engine Rebuilds
Our Work
Providing professional and high quality BMW engine rebuild services including a 1 year warranty with every job. We are able to accommodate most modern BMW vehicles however we specialise in the N47 & N57 platforms. Completing repairs most commonly on the 1.6, 2.0 & 3.0 diesel engines.
At Reconworks we hold stock for most BMW diesel engines so we are capable of providing an engine rebuild on these with great efficiency. However we are perfectly suited to provide a great reconditioning service on other platforms accordingly because of our great relationships with our quality parts suppliers.
BMW ENGINE REBUILD
Failures
BMW 1.6 2.0 Diesel N47
BMW Engine Failures
Timing failure: All versions of the N47 engine suffer from weak timing (including MINI). Both the chain and guides are composed of generally weak materials so therefore makes this the most common cause of engine failure. This generally causes damage to rocker arms, valves, guides in addition to camshafts and carrier in the first few seconds.
Turbocharger failure: Usually a secondary failure following a type of timing failure or poor maintenance. Because as the plastic timing guides wear they leave behind a build up of material which ultimately makes its way to the oil pickup therefore blocking it. The blocked oil pickup means the feed to the turbo is disrupted and causes failure.
Crankshaft bearing failure: Commonly caused by a lack of sufficient lubrication therefore often causing spun big end and main bearings.
Maintenance: Poor servicing is a major contributing factor leading to engine failure. If oil is not changed regularly a build up of particles and debris will build up inside the engine. So this and the change in oil viscosity commonly blocks oil galleries and the pickup therefore leading to failures. Because of this we are seeing the oil pumps failing in addition to turbochargers due to blocked pickup.
Vehicles
2007-2014
BMW 1 Series
116d 118d 120d
BMW 3 Series
318d 320d
BMW 5 Series
520d
BMW X1
20d
BMW X3
20d
BMW 2.0 Diesel B47
BMW Engine Failures
Timing chain failure: Also like the N47 engine, the B47 also suffers from weak timing. So the chain will often stretch causing a rattling sound in addition to snapping. The guides are also weak and evidently experience similar failures to the N47 because of the materials used.
Turbo failure: Again much like the N47 the plastic timing guides wear and leave behind a build up of material so they ultimately make their way to the oil pickup. Because the oil pickup is blocked it means the feed to the turbo is also disrupted and thus it causes failure.
Crankshaft failure: A lack of lubrication in important contact points eventually leads to spun connecting rod bearings in addition to main bearings.
Lack Of Maintenance: With any engine, servicing is a major contributing factor to engine failure. This is because if the oil is not changed often a build up of particles and debris will compile inside the engine. Due to the change in oil viscosity this commonly blocks oil galleries and the pickup so therefore leads to failure. Oil pumps and turbochargers will usually fail in this instance.
Vehicles
2014+
BMW 1 Series
118d 120d
BMW 2 Series
218d 220d
BMW 3 Series
318d 320d
BMW 4 Series
418d 420d
BMW 5 Series
520d
BMW X1
sDrive18d sDrive20d xDrive25d
BMW X2
sDrive18d sDrive20d xDrive25d
BMW X3
sDrive20d xDrive25d
BMW X4
xDrive20d xDrive25d
BMW X5
sDrive25d xDrive25d
BMW 6 Series
620d Gran Turismo
BMW 3.0 Diesel N57
BMW Engine Failures
Weak Timing: Like the N47 4 cylinder engine, the N57 6 cylinder also has a weak timing system and so it is prone to failing. The guides are also made from similar material therefore similar issues with a blocked oil pickup can occur. So the resulting damage of timing failure is generally similar i.e. rocker arms, camshafts & carrier, valves & stems etc.
Fuel injector failure: We have taken in some 3.0 diesels which are knocking however these are not crankshaft failures. Fuel injectors are known to over fuel so they cause massive damage inside the cylinder. This is due to the injector spraying too much fuel inside the combustion chamber during its cycle before igniting it. The large amount of fuel creates a very high temperature environment subsequently melting and breaking up the pistons.
Crankshaft failure: This is usually caused by a lack of sufficient lubrication and so commonly it causes spun big end and main bearings.
Poor Servicing: When completing a BMW engine rebuild we commonly find a build up of particles and debris inside the engine. This and the change in oil thickness will block the oil pickup and galleries thus causing failures. We see the oil pumps failing in addition to turbochargers due to blocked pickup.
Vehicles
2008-2015
BMW 3 Series
325d 330d 335d
BMW 5 Series
525d 530d 535d 540d
BMW 6 Series
635d 640d
BMW 7 Series
730d 730Ld 735d 740d
BMW X3
xDrive30d xDrive35d
BMW X5
xDrive30d xDrive35d xDrive40d
BMW X6
xDrive30d xDrive35d xDrive40d
COMMON VEHICLES
BMW 116D – BMW 118D – BMW 120D
BMW 318D – BMW 320D
BMW 520D
BMW X1 – BMW X3 – BMW X5