Original Turbo Model
2248906G, 2248906TH, 22489069, 2247691F, 2247691G, 2247691H,
2248906I08, 2248907H, 11652248906G, 11652248906H, 116522489069,
11652247691F, 11652247691G, 11652247691H, 11652248906I08,
11652248907H, 22489079, 11652248906 - 11652248907, 11652247691F,
116522489079, 2248906, 2248907, 2247691F
454191-0015, 454191-0001, 454191-0003, 454191-0004, 454191-0005,
454191-0006, 454191-0007, 454191-0008, 454191-0009, 454191-0010,
454191-0012, 454191-0013, 454191-5012S
1999-05 BMW 530D, 730D with Engine M57D
Q. What is the Inducer?
A:Looking at a compressor wheel, the inducer is the "minor"
diameter. For a turbine wheel, the inducer is the "major" diameter.
The inducer, in either case, is where flow enters the whee
Q. Are oil deposits indicative of impending turbo failure? There is
blue/black smoke, is my turbo going bad?
A:Blue/black smoke can be caused by numerous conditions, and one of
them could be a turbocharger worn past its useful service life. The
following are potential reasons that blue/black smoke could occur:
* Clogged air filter element or obstructed air intake duct. This
condition creates a vacuum due to high differential pressure
resulting in oil drawn into the compressor and subsequently burned
during engine combustion.
* Engine component problems; i.e. worn piston rings or liners,
valve seals, fuel pump, fuel injectors, etc.
* Obstructed oil drain on turbocharger resulting in pressure
building inside the center housing and forcing oil past the
* Damaged turbocharger or turbocharger worn past its useful service
* Black smoke is also sometimes indicative of too rich an air/fuel
Q. What should I look out for when buying a turbo?
A1. Condition of the turbine housing - inspect for cracks on the
exterior and inside the inlet of the housing. If the housing has
cracks then the housing needs to be replaced.
2. Condition of the turbine and compressor wheels - inspect for
cracks and damaged blades. If either of the wheels are damaged then
the wheel (s) need to be replaced and the center section balanced.
3. Condition of the bearings - spin the turbocharger shaft and
check for roughness. If roughness is detected then the turbocharger
needs to be disassembled and the internal components inspected and
replaced if necessary.
4. The most important factor is to make sure the turbo is the
proper one for your application. A properly matched turbo will
provide better performance and more reliable operation. A properly
matched turbo includes matched turbine and compressor wheel sizes
and appropriate housings.
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