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Carburetor Heat Kit

Sully73

Active Member
Hi, I am finishing my RV-4 with an 0-320 engine. I want to install a carburetor heat system. I need advice on where to purchase a good heat muff (for a non-crossover exhaust system) and the flapper valve for the air intake.
Thanks
 
I have the same set up (RV4 with O-320). I just bought a carb heat muff from Vetterman for $65. I have the Vetterman 4-pipe exhaust (non-crossover), and strapped the muff to the #2 exhaust pipe.

As for the flap....the instructions for building the filtered air box (aka "FAB") explain how to make one. If you could get a copy of the FAB instructions from Vans, that would be a good place to start.
 
What I did

I made mine, not very hard , but there are store bought ones that will get you there quicker. Locate on L/H pipe.
 

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O-320 Setup

Here’s my setup with the O-320 and the Vetterman exhaust attachment.
 

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