What does a 1 inch carb spacer do?
A carb spacer increases the distance between the intake manifold and the bottom of the carburetor, which reduces the velocity of the intake charge. A four-hole spacer helps to direct the air-fuel mixture, making the streams more efficient.
Are carb spacers worth it?
Spacers are said to improve air/fuel vaporization through and out of the carburetor. Anytime the air/fuel charge has to turn sharply coming off the carb, it increases the chance of separating the fuel from the air.
How do I know if I need a carb spacer?
Carb spacers only do one thing, increase the size of the plenum area of the intake manifold. Larger plenums = higher RPM power curves (less low RPM torque). Unless you are operating at or above 6,000 – 8,000 RPM and are using a single plane intake manifold, you “shouldn’t” need a carb spacer.
How do I choose the right carb spacer?
An open plenum carb spacer is ideal for maximizing horsepower. Their design will increase the intake manifold’s total area to build more mid-range, high-RPM power. If you decide this is the type for you, purchase it in either wood or aluminum. Both materials are easy to shape, which you’ll probably want to do.
How much horsepower does a carburetor spacer add?
On the 350, best results were found with a 2-inch spacer. Its use produced up to 6 more horsepower at peak and as much as 14 more at 750 rpm over peak power. On the 400-inch engine, a stack of three 1-inch spacers produced the best results.
What is the purpose of the carburator spacer?
Carburetor spacers have two main tasks: insulate the carburetor from engine heat to keep the incoming air and fuel cooler, and act as a tuning aid to produce more power. There are many carb spacer options to accomplish those goals-wood, aluminum, and more-so the the question becomes:
Do I need a carb spacer?
putting a carb on the intake without the spacer would present a few problems. Here are some reasons why you need a spacer. #1. It keeps the heat from the engine from boiling the fuel in the carb. #2. cooler fuel is always better, denser, atomizes better. #3.
What is material for a carb spacer?
Known simply as the vibration absorber carburetor spacer, this piece uses billet aluminum sandwiched around a shock-resistant composite material to shield the carb from the engine’s vibrations and heat.