Are Zenith carburetors still made?
Today, the company is known as Zenith Fuel Systems LLC, with headquarters and a modern manufacturing facility in Bristol, Virginia and still offers original manufacturing equipment and replacement carburetors and kits.
How do I know what Zenith carburetor I have?
The inner circle will be the Zenith number. Aftermarket carburetors made during this period will have the Zenith part number only on the tag. Zenith carburetor produced after about 1980 will not have the round tag, but will have a tiny number stamped (never raised) in a semi-circle on the body of the carburetor.
How does a Zenith carb work?
The air from air filter passes through the gap in side of throttle valve and as the air passes through the gap, velocity of air increases and pressure of air decreases on the upper side of throttle valve and thereby producing suction effect at Starting jet which is placed at top of throttle valve.
How do I identify a carburetor?
It’s like a “VIN” for your carburetor and should be hand-stamped on the front of the choke tower to the right of the vent tube on most typical Holley carbs. The list number typically is four to six digits long and may or may not have a suffix number behind it. The date code will be right below it.
What is a downdraft carburetor?
Carburetors are called updraft or downdraft according to their position. If the carburetor is below the intake manifold’s input, it is updraft. If it is above, it is a downdraft.
How do updraft carburetors work?
In an updraft carburetor the air flows upward into the venturi according to Edward Abdo in Power Equipment Engine Technology. Other types are downdraft and sidedraft carburetors. An updraft carburetor may need a drip collector.
How do I know which carburetor rebuild kit to buy?
Using your carburetor number is the BEST way to get the proper carb kit. 99.9% of all carburetors have an identification number located on the carburetor. Some numbers are stamped directly into the carburetor, others used a tag attached to one of the carb body screws.
How do I know what carburetor to buy?
To arrive at the most appropriate carburetor choice, there’s a basic formula: engine displacement multiplied by maximum rpm divided by 3,456. For example: a typical 355ci small-block—a 0.030-over rebuild—with a 6,000-rpm max engine speed would work well with a 616-cfm carb ((355 x 6,000) 3,456 = 616.32).