So the ‘58 182 I’m buying has the the round vent hole in the lower cowling on the pilot side closed up with the hose fitting on the pilot side of the muffler just left open with no “tube” connecting the cowl hole with the muffler like it was built. The other side is hooked up normally. Since the last owner is no longer living we can’t ask why he did that but I just found a pic of another ‘58 182 with the same thing done. Anyone have any idea why? My mechanic has no clue why. There’s just a round cover screwed on to cover the cowl hole.

Phil

The LH inlet was for carb heat. The RH side is cabin heat. There was a SB decades ago to relocate the carb heat from the muffler to an air scoop on the exhaust collector. (Later planes also relocated the inlet for the cabin heat from the RH front of the cowl to below the oil cooler.)

Hummmm....OK. Not sure what that looks like but I sent your response to my mechanic in SoCal.