Related Photo Galleries
Crunching the numbers, it was clear the engine was rich at WOT, indicating a leaner mixture could improve WOT output. We had an average recorded A/F ratio of 11.04:1 at WOT. It was time to go into the carb for a jet change. The plan was to tune the WOT mixture with jetting changes, and then check and dial in the part-throttle cruise-mixture, which we hoped could be accomplished with only metering-rod changes.