supercharging · FF-0476

How much boost did the blown ARDUN make on the last pull?

About five and a half pounds early in the pull, then six, with air-fuel at almost 12. Boost kept rising toward 5,900 RPM, with the blower just getting happy at the top. Six pounds is not much compared with engines running 30, but this is a block from 1948 with three main bearings.

Expert

Robert King

Evidence

measured

Component

boost reading

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