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79nautique 
Grand Poobah 
Joined: January-27-2004 Location: United States Status: Offline Points: 7872 |
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 Topic: marine carbsPosted: July-01-2004 at 4:51pm |
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Other than the bent vent tubes what is different on a marine carb vs. a street carb?
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Jeff
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Joined: January-28-2004 Location: United States Status: Offline Points: 26 |
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Posted: July-01-2004 at 5:16pm |
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On the marine Holley, the floats are not externally adjustable. They eliminated a potential fuel leak source.
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SS 201
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Joined: October-20-2003 Location: United States Status: Offline Points: 232 |
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Posted: July-01-2004 at 8:49pm |
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J tubes on Holleys, E Brock claims they inendate the throttle shafts on their carbs, other than that nothing, except the cost. The marine carbs are usually jetted richer. Holleys have them both way, with external adjustments or not depending on the model. Holley's have annular or down leg boosters.
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David F
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Joined: June-11-2004 Location: United States Status: Offline Points: 1770 |
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Posted: July-02-2004 at 5:15pm |
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For a less than perfect solution, a Holley street carb can be used and www.skidim.com sells the "J" vent that can be retrofitted (two for primary and secondary sides) to the street carb. Not a recommendation here, just an observation :)
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SS 201
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Joined: October-20-2003 Location: United States Status: Offline Points: 232 |
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Posted: July-03-2004 at 9:30am |
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Go to mortec.com and get information for Holley Carbs.
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Farkum
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Joined: June-10-2004 Location: United States Status: Offline Points: 41 |
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Posted: July-06-2004 at 3:59am |
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I hated the holley 600 that was on my 79 nautique. I switched over to a 69 850cfm rochester quadrajet which is a street carb and performs wonderfully on my boat. I just be a little more careful to check for fuel fumes in the engine compartment and I bought one of those warning gauges. I am also putting a timer on the blower so that my idiot brother cant start the boat without running the blower for at least 2 minutes.
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