The two engines share no parts, as the new 8L engine was designed with water jackets between the cylinders, unlike the old 8.1.
They are usually made from copper and cooled with a water jacket to withstand the extreme temperatures.
The design calls for surrounding the central living quarters with a water jacket.
Turbulators in the tubes improve heat transfer to the water jacket.
This hole goes into the water jacket of the cylinder head.
As such, they, too, lack water jackets and rely entirely on the incoming air/fuel mixture for their cooling.
Arcot threw his ship into space, and let the tubes cool under the water jacket.
The engine's water jacket kept it cool and helped to reduce noise.
The water jacket would be filled with water around the barrel.
The machine that Wilkinson showed to him was cooled by air, instead of a water jacket.