"Ross Richardson" wrote in message
...
Ron Natalie wrote:
Matt Barrow wrote:

OWT.
Actually, on many engines WOT is better than slightly reduced throttle
settings. WOT on the carbs provide a bit of enrichment for cooling.

Hmmm, when at cruise, especially above 5K feet, I always bring the
throttle back to where the MP just moves down a bit. I am not wasting fuel
that is not needed and I have heard that the butterfly valve slightly
tilted helps in mixing. Don't know about the latter, but certainly I have
found better fuel burn numbers. In cruise, not sure you have to worry
about using fuel for cooling.

Try the throttle slightly closed and adjust power with a leaner mixture. You
might find you fuel flow decreased and the engine smoother.