Q:

What are the specs on typical carburetors?

A:

Typical carburetor specs include measurements of 20, 22 and 26 millimeters. Other carburetors are 34 and 35 millimeters. These specs are determined by the bore, or body opening measurements on the carburetor's intake manifold side. Carburetor specs commonly determine their model numbers. For example, a Mikuni VM26 has a 26-millimeter bore.

Keep Learning

To determine an engine's necessary carburetor specs, use the engine's size, RPM and volumetric efficiency. Measure the engine's size in cubic inches or centimeters, and approximate the engine's volume efficiency. Stock engines typically have .75 to .85 VE, while mild-built engines generally have .85 to .90 VE.

Use the engine's maximum RPM as shown on the car's tachometer to make sure the carburetor is big enough. Then, enter the engine's measurements into a carburetor CFM Calculator to generate an estimate for the necessary carburetor specs.

A carburetor is simply an open pipe that allows air to flow into the engine's inlet manifold. The pipe's are generally in Venturi form, meaning they widen and narrow alternatively to increase airflow speed into the engine. The Venturi is connected to the throttle valve that rotates to increase or decrease airflow into the engine, maintaining appropriate air-to-fuel ratios in the engine and therefore controlling the car's speed.

Sources:

Related Questions

• A: A Tecumseh carburetor can be adjusted by allowing the engine to heat up, adjusting the speed of the engine to the highest maximum revolutions per minute an... Full Answer >
Filed Under:
• A: A Briggs and Stratton carburetor diagram can be used to overhaul the carburetor. The diagram contains a schematic drawing of every piece contained in the c... Full Answer >
Filed Under:
• A: There are several reasons that can cause backfire in an Edelbrock carburetor, including high-alcohol gasoline, carb adjustment level, engine temperature, s... Full Answer >
Filed Under:
• A: The process of rebuilding a Nikki carburetor includes finding a proper rebuild kit, removing the carburetor from the engine, separating and replacing parts... Full Answer >
Filed Under:
PEOPLE SEARCH FOR