Is Carb Heat Hose Supposed to Cover Slit on Heat Muff Pipe?

[tx_jayhawk]

All,

On the Van's carb heat muff (I know I may want to replace it in the future, but this is what i have for now), is the heat hose supposed to cover the "slit" or not? The end of the muff is open to draw air, but I wonder if the slit is also there to draw air (and should not be covered by the scat hose)?

See the slit on the attached.

http://vansaircraft.com/cgi-bin/catalog.cgi?ident=1300036134-368-627&browse=engines&product=carbheat-muff


Thanks,
Scott

 

[L.Adamson]

Looking at my install pics from years ago.............it does not cover the slit. And it makes sense, since the exhaust pipe takes half the open area.

I know that the carb heat requires all of the air it can get from the scat tube, as well as open flange on the filter box....that it connects too.

L.Adamson ---- RV6A

 

[noelf]

The installation instructions for the Carb Heat Muff call the "slit" a BYPASS SLOT. It also states to be "careful NOT to cover the bypass slot."

 

[LifeofReiley]

You really should consider one of these...

http://robbinswings.com/Carb_Heat_Muff.htm

If you ever really get carb ice, you'll wish you had one installed. Van's little do-hickey really won't do much for you.