Re: Dauntless V6 Heat Control Value
Plugging the crossover would make it act even colder, even in moderate weather. Plus, it'd be a pain.
But you might remember a problem associated with it. Unlike newer engines, the 225 used the old style of carb heating. The crossover came up, right out of the manifold to the bottom of the carb, passed through a passage underneath the carb, then back down to the other side. That often burned the carb base and/or gasket, allowing exhaust gasses back into the intake == instant EGR, and too much.
The cure for that was just plug off the 2 holes under the carb.
But that still allowed hot exhaust gasses to heat the intake manifold some.
Remember, the carb is evaporating gasoline - gas has a low dew point. The evaporation/atomizing process removes heat - the carb can ice up even on hot days from the evaporation.
That's why it needs a little heat.