Cummins Marine Diesel Repower Specialists › Forums › Cummins Marine Engines › 1/8 Tap in exhaust elbow won’t allow probe insertion

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  • January 27, 2020 at 5:19 pm #90935

    Douglas Fairchild
    Participant

    I have a Luhrs 2002 with Cummins 480CE engines. I purchased EGT gauges/probes from Tony but when I removed plugs there is metal blocking the probes from being screwed in. Is it OK to drill a hole in metal inside elbow to allow probe to be screwed in. Refer to photos.

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  • January 30, 2020 at 6:14 pm #91520

    Douglas Fairchild
    Participant

    Located NPT fitting

    Thanks guys, I found the NPT fitting right where Tony said it would be. As soon as my son in law returns my torch I will be able to get the plug out and get the probe in. Thanks again. Doug.

    January 30, 2020 at 5:55 pm #91519

    JJM
    Participant
    Engines: Cummins 480 CE
    Location: CT
    Country: United States

    That was probably for testing back pressure I imagine.

    Yes look for the 1/8th or 1/4 inch npt port near the Turbo like tony said .

    January 28, 2020 at 9:46 am #91072

    Douglas Fairchild
    Participant

    Roger that

    Thanks Tony I will check flange area. I’m glad I bought Gauges from you. Great after purchase assistance. Doug

    1 user thanked author for this post.
    Corey Schmidt
    January 27, 2020 at 5:38 pm #90944

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

    No, do not drill there–That would be going they the wet mixer..Why they put a fitting there makes no sense. Look at the picture.. Look for a spot in the dry flange area right next to the turbo outlet.

    Tony

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