cylinder heads · FF-0462

How is the ARDUN combustion chamber different from a Flathead's?

The ARDUN head has a hemispherical chamber with the valves in the head. Steve says it is really a different engine from the top end up: bottom ends have not changed much in 80 or 90 years, and it is the cylinder heads and the control of air and fuel that make engines efficient and powerful. The ARDUN head flows way better than the Flathead's valves in the block.

Expert

Steve Coppock

Evidence

expert attributed

Component

combustion chamber

Applicable scope

Steve Coppock's supercharged ARDUN overhead valve Flathead, 8BA block, about 289 cubic inches, with a Weiand 177 on the engine dyno at Klein Engines