ignition · FF-0544

Why mark the cylinder head before taking the distributor out after a dyno session?

After the last pull the advice is to take a black marker and mark the cylinder head for the timing before the distributor comes out, as a reference for where it was. The timing is still a little conservative.

Expert

Robert King

Evidence

expert attributed

Component

timing reference

Applicable scope

Steve Coppock's supercharged 8BA-style Ford Flathead V8, about 290 cubic inches, on the engine dyno at Klein Engines