Is a carb spacer worth it?
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. It also assists in preventing reversion from the pressure pulses.
How thick should a carb spacer be?
Available in aluminum and heat-insulating phenolic or wood fiber, these Edelbrock carb spacers also range in thickness from 1/2 to 1 inch.
What is a phenolic carb spacer?
We use phenolic in our carb spacers and adapters to stop the transfer of heat from the engine to the fuel system. Phenolic is made by compressing layers of resin soaked canvas under heat. It is well known for its superior insulation properties, finding use in the aerospace, automotive, and electronic industries.
Which carb spacer is best?
The 4-hole plenum spacer is most effective when it’s made from phenolic resin or a polymer. And the good news is that phenolic resin spacers can be stacked, the same way as wood or aluminum spacers. So if insulation and durability are both important to you, this may be the spacer for you.
What does a 4-hole carb spacer do?
4-Hole tapered spacers are the go-to unless the spacer is going under an elbow. Open spacers only improve plenum volume, but won’t pick up the CFM of the carburetor or throttle body the way the 4-hole tapered spacer does.
Can you stack carburetor spacers?
Wood or aluminum carb spacers are also easily stacked to multiply their effect. When you stack spacers, you are actually improving their insulation properties, and at the same time you’re getting more horsepower. This type of spacer will increase the velocity of your vehicle’s air-to-fuel charge.
What can I use as a carb spacer?
Phenolic resin and polymer are good choices for spacers that won’t be altered. Sanctioning body rules often dictate the type of spacer material you can use. Four-hole plenum spacers are designed to increase the velocity of the air/fuel charge, which helps build low and mid-range torque.