Technical Marine carburetors:

What are the differences between a "marine" carburetor and a regular carb?

This then begs the next question, Can i(should i) use a marine carb on my car?

 

They constantly complain about Navy food. Gary

 

Some marine carbs don't have an accelerator pump because they are designed to bring the rpm up slower and run at a constant rpm.

 

The main difference, at least on 4150/60 Holleys, are the curved bowl vent tubes that direct any overflow back into the engine. They will work fine on the street.


Holley 0-9015-1 - Holley Marine 4-bbl

 

About 2oo bucks,the marine carburetor is more expensive. HRP

 

...and most of them have a black coating

 

A carb for marine application should be UL and Coast Guard approved. Generally not much different but usually has modifications to reduce sloshing and fuel leakage. Generally will have changes to reduce corrosion due to wet salty environment. ( fittings, fasteners, throttle shafts, coating etc. ) Marine engines are usually in a confined space where chance of explosion or fire is greater. Engines will usually have distributor , starter , generator/alternator and flame arrester,( as opposed to air filter ) that are approved for marine use. Any component that could be a possible source of ignition in a confined space, will be a Marine version and will cost you more.

 

All the above. I too was going to say most are "painted" with a black coating to prevent corrosion, especially from salt water. Saw on the Gas monkey Garage Discovery Channel show on the latest 32 Ford Coupe, they had a marine carburetor on it. Not sure why they did that, but it stood out. "Get you some of that!". I am Butch/56sedandelivery.

 

If black is the goal, Edelbrock sells them in black.

 

Nobody mentioned it but the Marine units are required to have a flame arrester type air cleaner when actually used on a boat. It is supposed to keep any carb backfire from blowing up the gas fumes down in the engine compartment.

 

Marine carbs generally have the bowl vents directed into choke area so fuel vapors can't vent into the atmosphere without going through the flame arrestor/air cleaner. Also no provision for any emission ****. And no provision for a vacuum advance.
Can you run one on the street? Yes you can, no reason why you can't.

 

But why would you? Unless you plan on driving in deep water.

 

I ran a teal painted carter afb marine carb on my truck for awhile. Ran great.

 

on a Q jet are the flow numbers higher on a 350 boat vs car engine?? Thank you for any answer

 

nope same carb just with coastguard mods ( overflow vents and some had bowl vent screens )

 

Most don't have a fast idle cam on them either.