Cummins Marine Diesel Repower Specialists Forums Cummins Marine Engines Envirovent ccv kit install issue 6cta

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  • #147675

    matteo268
    Participant

    Have a 1997 Cummings 6cta 450 diamond series. I recently purchased a enviro vent kit. Reading the directions it says to tap off valve cover. Looking at my motor it looks like the crankcase breather tube comes off the block and goes to a filter before running through a dump hose to the bilge. Can someone please clarify if you remove the factory crankcase filter or connect the Envirovent hose direct to it. Pics are attached to help paint a picture.Ā 

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  • #147821

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

    You have a very late build 6CTA 8.3 CPL 1929 450 (rated 430BHP 2600 RPM–same as a later “450 Diamond) ).. I was not even aware that the engine was still being made.. Very good engine but technically itĀ  is not a “450 Diamond” as it’s a M2 using the Nippon Denso EP9 injection pump system.Ā  Ā Like all the earlier C’s, prop them to reach a solid 2700+ RPM and reach it easy when fully loaded.Ā  Notice the actual serial number. You missed a digit.

     

     

    #147769

    matteo268
    Participant

    Engine info

    Hey Tony, thanks for the reply. Attached is the pic of pump and engine tag. Looks like the engine serial number reads 4536659.Ā 

    #147701

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

    You have a very early 6CTA 8.3.. Hook it up the the external vent thingeeĀ  like you show.Ā  Put the drip bottle down low and loop back up to the air cleaner ( like in all the installs)Ā 

    Post an engine serial number-

    I am thinking you DO NOT have aĀ  450 Diamond –This is an M2 version of the 400C w/ a different CPL ?? Good engine but let’s be sure. —Ā  Also, aĀ  real good side view picture of the entire injection pumpĀ  will confirm it

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