Table of Contents
Do aluminum heads make more power?
Aluminum heads dissipate (get rid of) heat much faster than iron heads. … Aluminum heads will not automatically create more power than iron heads unless they flow more air and are installed on a higher compression ratio engine.
Does porting heads lower compression?
In general, head porting does not affect compression. Porting the head usually means enlarging the intake and exhaust runners, that's it. However, some porters "work" the combustion chamber, removing material for whatever reason. This will lower the compression.
Is a bigger combustion chamber better?
A larger combustion chamber makes the cylinder displacement (or volume) larger. Assuming you don't change anything else in your engine setup, swapping cylinder heads with a smaller combustion chamber will increase compression.
What are aluminum heads?
Any aluminum head will have advantages in lighter weight and better cooling due to aluminum being able to shed heat better than iron. … The aluminum heads have the valves cast further apart. This allows enough room to install seats under both valves, making the head more durable for unleaded fuel.
What do heads do on an engine?
In an internal combustion engine, the cylinder head (often informally abbreviated to just head) sits above the cylinders on top of the cylinder block. … In most engines, the head also provides space for the passages that feed air and fuel to the cylinder, and that allow the exhaust to escape.
What is a closed chamber head?
Closed chamber heads have a combustion chamber that resembles a bathtub, has quench area on both sides of chamber. Open chamber heads have the spark plug area of the head laid back to the edge of the cylinder to form a larger combustion chamber.
What is intake runner volume?
They are mostly rectangular with the corners usually rounded off. Intake Runner Volume – A larger intake runner volume allows more air and fuel to flow through it.