alpinelakespilot2000
Well Known Member
I have an 0-320, Vetterman exhaust system and Van's FWF kit including the FAB.
In some builders' pictures, I see that the source of carb heat is from an extra muff around the exhaust (at the front of the engine) which is then ducted directly to a flange riveted to the FAB at the carb heat door.
However, neither my Vetterman exhaust system nor my Van's FAB kit make any mention of ducting carb heat to the FAB carb heat door and, additionally, they provide no muff and no ducting flange to do this. Instead, it appears that Van's just uses the ambient heat in the cowl for carb heat.
This leads me to believe that ducting air from the exhaust muff to the carb heat FAB door is a modification others have done to get warmer air to their carb. Is this true?
If so, where does one get the extra muff and are there any drawings anwyhere depicting how the ducting connects to the FAB?
Thanks.
In some builders' pictures, I see that the source of carb heat is from an extra muff around the exhaust (at the front of the engine) which is then ducted directly to a flange riveted to the FAB at the carb heat door.
However, neither my Vetterman exhaust system nor my Van's FAB kit make any mention of ducting carb heat to the FAB carb heat door and, additionally, they provide no muff and no ducting flange to do this. Instead, it appears that Van's just uses the ambient heat in the cowl for carb heat.
This leads me to believe that ducting air from the exhaust muff to the carb heat FAB door is a modification others have done to get warmer air to their carb. Is this true?
If so, where does one get the extra muff and are there any drawings anwyhere depicting how the ducting connects to the FAB?
Thanks.