Click for Abeking Click for Nordhavn Click for YF Listing Service Click for Ocean Alexander Click for Northern Lights

Marine Carburator

Discussion in 'Technical Discussion' started by bigear1, Jun 21, 2010.

You need to be registered and signed in to view this content.
  1. bigear1

    bigear1 New Member

    Joined:
    Aug 2, 2009
    Messages:
    21
    Location:
    Jacksonville,FL
    We have a 38' Chris Craft Corinthian with twin 454 crusaders. The engines have required some work and one needed a new Carb. The original quadrajet was replace with a Holly 4 barrel. I don't believe this is a marine Carb. Is there a difference and are there any safety issues?
  2. Marmot

    Marmot Senior Member

    Joined:
    May 20, 2007
    Messages:
    3,311
    Location:
    9114 S. Central Ave
    Life or death ...

    What happens when your automotive carb has a stuck float?
  3. bigear1

    bigear1 New Member

    Joined:
    Aug 2, 2009
    Messages:
    21
    Location:
    Jacksonville,FL
    I really don't know. What happens?
  4. tunnelvision69

    tunnelvision69 New Member

    Joined:
    Jan 18, 2010
    Messages:
    5
    Location:
    slidell,la
    the main difference in a marine carb is the use of J tubes for the bowl vents instead of strait tubes. the J tubes force fuel that overflows the fuel bowl into the throat of the carb to stall the engine rather than let it leak onto the engine through the flame arrestor. a stuck float can be deadly without J tubes.
  5. bigear1

    bigear1 New Member

    Joined:
    Aug 2, 2009
    Messages:
    21
    Location:
    Jacksonville,FL
    Can the Holley carb be fitted with j tubes?
  6. tunnelvision69

    tunnelvision69 New Member

    Joined:
    Jan 18, 2010
    Messages:
    5
    Location:
    slidell,la
    yes you can if you can find some J tubes they just press in place. not sure if this will protect you from insurance companies or the coast guard though.
  7. NYCAP123

    NYCAP123 Senior Member

    Joined:
    Mar 14, 2008
    Messages:
    11,205
    Location:
    Long Island, NY
    Insurance companies love to find non-marinized parts when it comes time to pay claims...or NOT.
  8. CaptTom

    CaptTom Senior Member

    Joined:
    Jan 26, 2006
    Messages:
    1,949
    Location:
    Palm Beach to Ft Lauderdale
    Who did the work for you? Did a licensed or marine mechanic do the carb replacement for you? If so, I would take it up with him. If you or a buddy did the work, then pay the bucks and get a marine carb to prevent a potential tragedy later. A little dirt can sticjk a float and make the bowl overflow. Seen it happen on cars and it can happen. Good luck.
  9. 805gregg

    805gregg New Member

    Joined:
    Jan 6, 2010
    Messages:
    17
    Location:
    Ojai, Ca
    Holley makes marine carbs, you can get them from JEGS.
  10. Seafarer

    Seafarer Senior Member

    Joined:
    Sep 3, 2007
    Messages:
    721
    Location:
    Hudson River