Cummins Marine Diesel Repower Specialists › Forums › Cummins Marine Engines › QSC 8.3 turbo

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  • April 8, 2024 at 4:09 am #161830

    pm
    Participant

    I’m looking for a QSC turbo.    The part number on the turbo is 40387490, which doesnt match up to anything listed for that motor on this site.   Any ideas?

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Viewing 6 replies - 1 through 6 (of 6 total)
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  • April 9, 2024 at 6:57 pm #161921

    Tony Athens
    Moderator
    Vessel Name: Local Banks
    Engines: QSB 6.7 550 HP
    Location: Oxnard, CA
    Country: USA

    All looks very good to me……..USE the Graphite gasket ( not the OEM SS one) — new hardware with never-seize on the bolts

    April 9, 2024 at 11:27 am #161911

    pm
    Participant

    See attached.   <br /><br />

    Is the thin area where the gasket mates a concern?

    April 9, 2024 at 8:10 am #161892

    Tony Athens
    Moderator
    Vessel Name: Local Banks
    Engines: QSB 6.7 550 HP
    Location: Oxnard, CA
    Country: USA

    Can you take a new picture so I can see all the way inside?

    It’s what I cannot see that matters –the  inner housing around the turbine wheel..

    Look at the attached picture

    April 9, 2024 at 7:37 am #161888

    pm
    Participant

    Is the the turbine housing available?

    April 8, 2024 at 10:23 am #161845

    pm
    Participant

    Serial number is: 46579016.   QSC M – 540.

    The turbine housing on the exisitng turbo is eroded to about 4mm, and does no have any backing for the crush ridge on the gasket.

     

     

    April 8, 2024 at 5:18 am #161834

    Tony Athens
    Moderator
    Vessel Name: Local Banks
    Engines: QSB 6.7 550 HP
    Location: Oxnard, CA
    Country: USA

    POST the engine serial number 

     

    CURIOUS———-Exactly why so you need a new turbo?  Got some pictures?

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