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  #1  
Old 12-07-2021, 12:43 PM
Craw's Avatar
Craw Craw is offline
 
Join Date: Nov 2019
Location: Ottawa, ON
Posts: 43
Default IO-360 Heat Muff Question

Good Afternoon All,
I'm currently planning on installing an IO-360-A1B6 in my RV-7A and would like to install two heat muffs. I'm wondering if anyone has already installed this configuration and has any pictures or gotchas to share based on experience.

The ideal scenario for me would be a vetterman 2-1 exhaust and 1 heat muff each side, however, I don't know if enough room exists to support this setup.

The winters in Canada are pretty cold so I think two heat muffs are a must for me (already going with heated seats).

Cheers,
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  #2  
Old 12-07-2021, 02:13 PM
upperdeck upperdeck is offline
 
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Location: Menomonee Falls, WI
Posts: 181
Default

I have this setup with two heat muff run in series. I'm happy with the temp of the heat output, but the volume is a bit anemic.
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  #3  
Old 12-07-2021, 02:18 PM
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Craw Craw is offline
 
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When you say "run in series" do you mean the output of the first heat muff flows into the input of the second heat muff and then into the cabin? If you have a picture of the firewall forward config I would love to see it.

Thanks again for your feedback
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  #4  
Old 12-07-2021, 03:03 PM
rapid_ascent rapid_ascent is offline
 
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Location: Dublin, CA
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Default

The "In series" is an electrical term but yes that would mean the output of one running to the input of the second.

I believe you should be fine with this configuration. You should reach out to Vetterman to confirm though. They seem to have a pretty good handle on all the different engine configurations and exhaust systems that work with them.
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Old 12-07-2021, 03:19 PM
upperdeck upperdeck is offline
 
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that's exactly what I meant by "in series." There's plenty of room to route the hoses around.

I also went with heated seats and love them!

Last edited by upperdeck : 12-07-2021 at 03:22 PM.
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  #6  
Old 12-07-2021, 03:46 PM
Darin Watson Darin Watson is offline
 
Join Date: May 2011
Location: Calgary, AB
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Default Also run 2 in series

Two in series with six rows of “fins”…about as good as it gets
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  #7  
Old 12-07-2021, 06:43 PM
Dave S Dave S is offline
 
Join Date: Nov 2018
Location: Eagan, MN
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Darin,

Where did you come up with the fins? I have a -7 with the Vetterman exhaust. Not quit as cold as you, but still gets chilly down south here in Minnesota. Seems like might be a great idea to add to mine while I'm still in the installation process.

would mind sharing the plans?

Thanks
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  #8  
Old 12-10-2021, 01:14 PM
agent4573 agent4573 is offline
 
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Location: Mountain view
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Default

Quote:
Originally Posted by Darin Watson View Post
Two in series with six rows of “fins”…about as good as it gets
There's 7 rows of fins though.....
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  #9  
Old 12-11-2021, 08:21 PM
Darin Watson Darin Watson is offline
 
Join Date: May 2011
Location: Calgary, AB
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Default Will look for plans

I will have to dig for the plans, having the laser cut pieces were fairly in expensive.

I know the photo shows 7 rows as I was playing around with the volume vs temperature trade offs and ended with 6 per muff.
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  #10  
Old 12-11-2021, 08:35 PM
SonexGuy SonexGuy is offline
 
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Location: Maynard, MA
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I used 2 of these in line and they work well. Certainly better than my few custom attempts over a couple of years. The restrictors allow you to vary air flow to find what works for your setup.

https://www.aircraftspruce.com/catal...at05-15249.php
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