cylinder heads · FF-0303

Why did the ARDUN designers use a hemispherical combustion chamber?

Hemi refers to a combustion chamber shaped like half a sphere. Steve says designers looked at many shapes, including the Flathead and wedge chambers, and chose the hemispherical one because it gives the best surface area per unit volume.

Expert

Steve Coppock

Evidence

expert attributed

Component

combustion chamber

Applicable scope

Ford Flathead V8 with the ARDUN overhead valve conversion