Heat muff question

[robraven4]

I’m hoping to get some help from the 14 community. I’m building an RV7 and would like to install a different heat muff. I think that the heat muff that comes with the RV14 firewall fwd kit will work, but the drawing doesn’t include dimensions and the tech folks at vans didn’t know either. Before I order it from vans, can someone help me with the dimensions below?

Length and diameter of EX-00043A heat muff. Are the inlet and outlets 2” diameter?
What’s the inside and outside diameter of the EX-00013L/13K brackets?

Thank you! Rob

 

[mc607]

I’m hoping to get some help from the 14 community. I’m building an RV7 and would like to install a different heat muff. I think that the heat muff that comes with the RV14 firewall fwd kit will work, but the drawing doesn’t include dimensions and the tech folks at vans didn’t know either. Before I order it from vans, can someone help me with the dimensions below?

Length and diameter of EX-00043A heat muff. Are the inlet and outlets 2” diameter?
What’s the inside and outside diameter of the EX-00013L/13K brackets?

Thank you! Rob

The end caps are slightly less than 1-3/4” dia i.d. to fit snug on the exhaust. The o.d. Is 2-3/4” dia. The fwd heat muff is 7-1/2” long. The dia of heat muff is slightly larger than the o.d. of end caps, 2-3/4”. Inlet and outlet are both 2”. Clocking of inlet/outlet is less than 180 degrees.

RV-14/14A Heat Muff Ends

Note: This kit is referenced in SL-00069 for the RV-14/14A Note that each RV-14/14A aircraft has two heat muffs. Each kit contains parts needed to repair cracked ends for one (1) heat muff on RV-14/14A. Purchase one set per heat muff to be repaired.

store.vansaircraft.com

 

[robraven4]

Thank you for the reply! It helps a lot.