E36 325 Lets talk engines! M52 vs M52TU Vs M54?
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    Lets talk engines! M52 vs M52TU Vs M54?

    Ok from what i understand so far about the BMW engines is as follows>


    M52 engine belonged to the early 3 series E39?

    M52TU engine belonged to the 3 series E46 1999-20000?

    M54 engine was introduced and belonged in the 2002 on-wards 3 series E46?

    so whats the best engine, regards performance/reliability. and what changes were made i'm finding it hard to tell them apart?

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    Lets talk engines! M52 vs M52TU Vs M54?

    Quote Originally Posted by steveo76 View Post
    Ok from what i understand so far about the BMW engines is as follows>


    M52 engine belonged to the early 3 series E39?

    M52TU engine belonged to the 3 series E46 1999-20000?

    M54 engine was introduced and belonged in the 2002 on-wards 3 series E46?

    so whats the best engine, regards performance/reliability. and what changes were made i'm finding it hard to tell them apart?
    A majority will tell you the m54 engine is the best

  3. #3
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    M52 was also found in the E36.
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    Quote Originally Posted by Ronnie View Post
    M52 was also found in the E36.
    ...and is therefore inherently awesome.

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    Lets talk engines! M52 vs M52TU Vs M54?

    And wasn't the m54 in some 2000 cars as well?

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    Quote Originally Posted by Niall_farley View Post
    And wasn't the m54 in some 2000 cars as well?
    am i right in saying that the M54 engine has an electronic throttle, where the M52+M52(TU) is cable...

    What other differences is there? are parts interchangeable between the M52 and M54?

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    NEW PISTONS - The piston has a shorter skirt compared to the M52 TU and continues
    with the graphite coating for friction and emission reducing measures. The piston rings have
    been modified to reduce friction.
    CRANKSHAFT - The crankshaft for the 3 liter M54 is adopted from the S52B32 - M3
    engine. The crankshaft for the 2.5 liter is carried over from M52.
    CAMSHAFT - The camshaft for the 3 liter M54 is modified with more lift (9.7 mm) and
    new valve springs to accommodate the increased lift. The camshaft of the 2.5 liter M54 is
    carried over from the M52 engine.
    INTAKE MANIFOLD - The intake manifold is modified with shorter ram tubes (20mm
    shorter on 3 liter/10mm shorter on 2.5 liter). The diameter of the tubes is increased slightly.
    INJECTION VALVES - The diameter of the injection pintle has increased slightly for the
    increased displacement of the 3 liter engine. The injector for the 2.5 liter engine carries over
    from M52.

    NON RETURN FUEL RAIL SYSTEM
    The M54 engine with MS 43.0 control uses the non return fuel rail system introduced on
    the M62 TU engine. The system meets running loss compliance without the use of the 3/2-
    way solenoid valve currently used on the M52 TU engine.
    The regulated fuel supply is controlled by
    the fuel pressure regulator integrated in
    the fuel filter. The fuel return line is also
    located on the filter.
    The M54 engine uses an Electronic Controlled
    Throttle Valve (EDK) for intake air control. The
    idle control valve and turbulence function of the
    intake manifold carries over from the M52 TU
    engine.

  9. The Following 5 Users Say Thank You to dailydoggy For This Useful Post:

    Chuckb (20-10-2012),E36 lover (09-10-2012),gringog60 (09-10-2012),simonsays (09-10-2012),StK (09-10-2012)

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    Lets talk engines! M52 vs M52TU Vs M54?

    Quote Originally Posted by dailydoggy View Post
    NEW PISTONS - The piston has a shorter skirt compared to the M52 TU and continues
    with the graphite coating for friction and emission reducing measures. The piston rings have
    been modified to reduce friction.
    CRANKSHAFT - The crankshaft for the 3 liter M54 is adopted from the S52B32 - M3
    engine. The crankshaft for the 2.5 liter is carried over from M52.
    CAMSHAFT - The camshaft for the 3 liter M54 is modified with more lift (9.7 mm) and
    new valve springs to accommodate the increased lift. The camshaft of the 2.5 liter M54 is
    carried over from the M52 engine.
    INTAKE MANIFOLD - The intake manifold is modified with shorter ram tubes (20mm
    shorter on 3 liter/10mm shorter on 2.5 liter). The diameter of the tubes is increased slightly.
    INJECTION VALVES - The diameter of the injection pintle has increased slightly for the
    increased displacement of the 3 liter engine. The injector for the 2.5 liter engine carries over
    from M52.

    NON RETURN FUEL RAIL SYSTEM
    The M54 engine with MS 43.0 control uses the non return fuel rail system introduced on
    the M62 TU engine. The system meets running loss compliance without the use of the 3/2-
    way solenoid valve currently used on the M52 TU engine.
    The regulated fuel supply is controlled by
    the fuel pressure regulator integrated in
    the fuel filter. The fuel return line is also
    located on the filter.
    The M54 engine uses an Electronic Controlled
    Throttle Valve (EDK) for intake air control. The
    idle control valve and turbulence function of the
    intake manifold carries over from the M52 TU
    engine.
    Damn you beat me too it

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    Quote Originally Posted by Lee_h View Post
    Damn you beat me too it

    naturally

  12. #10
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    Lets talk engines! M52 vs M52TU Vs M54?

    Quote Originally Posted by dailydoggy View Post
    naturally
    Too fast for me mate, I had typed all that up aswel then noticed you had already posted it

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