carburetion · FF-0594

What would be the next tuning step on the four-barrel ARDUN?

Probably to enrich the secondaries on the carburetor. Robert checked the plugs, and they watched exhaust gas temperatures and the oxygen sensor installed for the test; Steve thinks it was a little lean at the top end of the range. Overall he would not change anything: no oil leaks, good oil pressure, and it did not miss a beat.

Expert

Steve Coppock

Evidence

expert attributed

Component

secondary jetting

Applicable scope

Ford Flathead V8 with Don Ferguson reproduction ARDUN overhead valve heads, Steve Coppock's engine of about 289 cubic inches, single four barrel, on the dyno at Klein Engines