Click for Delta Click for Glendinning Click for Walker Click for YF Listing Service Click for Westport

Detroit diesel hole in the block, repairable?

Discussion in 'Engines' started by Matt46post, Oct 7, 2017.

You need to be registered and signed in to view this content.
Page 2 of 2
  1. Capt J, Oct 9, 2017
    #21
    Capt J

    Capt J Senior Member

    Joined:
    Jul 11, 2005
    Messages:
    14,540
    Location:
    Fort Lauderdale
    Yeah, but none of the marinizers kept them factory HP until the DDECs and Penske came along made them stop tinkering with them......Covington made 12v71 TI's up to 850HP, Key Power also 850HP and I forgot what J+T rated them at. I ran a set of Covington 12v71TI's that were rated at 735 or 750hp. The injectors used a really weird height 1.46" (generator setting in DD book for the injectors) instead of 1.98" (the factory marine injector height in the DD book.) At 1.98" they would black smoke like crazy at 1000 rpms and all of the way up.
  2. Capt Ralph, Oct 9, 2017
    #22
    Capt Ralph

    Capt Ralph Senior Member

    Joined:
    Sep 8, 2004
    Messages:
    13,486
    Location:
    Satsuma, FL
    Yep, black smoke.
    You need cool air if you going to pour fuel in.
  3. Capt J, Oct 9, 2017
    #23
    Capt J

    Capt J Senior Member

    Joined:
    Jul 11, 2005
    Messages:
    14,540
    Location:
    Fort Lauderdale
    At 1.46" which is what Covington set them up at it runs crystal clean, no visible smoke at any RPM.
  4. Capt Ralph, Oct 9, 2017
    #24
    Capt Ralph

    Capt Ralph Senior Member

    Joined:
    Sep 8, 2004
    Messages:
    13,486
    Location:
    Satsuma, FL
    Pure FM
Page 2 of 2