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Marine Carburator

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

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  1. bigear1

    bigear1 New Member

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    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

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    Life or death ...

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

    bigear1 New Member

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    I really don't know. What happens?
  4. tunnelvision69

    tunnelvision69 New Member

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    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

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    Can the Holley carb be fitted with j tubes?
  6. tunnelvision69

    tunnelvision69 New Member

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    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

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    Insurance companies love to find non-marinized parts when it comes time to pay claims...or NOT.
  8. CaptTom

    CaptTom Senior Member

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    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

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    Holley makes marine carbs, you can get them from JEGS.
  10. Seafarer

    Seafarer Senior Member

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