You don't need ram air for carb heat, but you do want some pressure to move the air through for cabin heat.
I am currently using a single heat muff for both cabin and carb heat. It's not a great setup, but it seems to work OK. It is so dry here that I rarely need carb heat, so I can't really say whether the carb heat is adequate or not for a moist area. Guess I'll find out after I retire and move. -Jeff Scott Los Alamos, NM ----------------------------- Subject:?KR> Heat Muff I installed carburetor heat and cabin heat. ?Do you think it will be a problem running both from the same heat muff? ?Details; 4 inch pipe ?10 inches long around a 2 inch exaust pipe, I ran one 2 inch hose to carb heat and one 2 inch hose on the opposite side to cabin heat, two additional 2 inch holes to allow static air to flow across the exaust. ? Do I need ram air? ? Joe Nunley?CW2 US Army RetiredBaker JROTC Instructor?Baker Florida? _______________________________________________
