Exhaust Heater Parts

All Fund Out · Post by **All Fund Out** » Wed Nov 01, 2006 1:37 am

Hello fellow members, This is my 1st posting, although I have been a member since 1994. I rebuilt serial #25573 in 1995 & it has been trouble free ever since , [wish I could say the same for my cars}
However, during the annual exhaust heater inspection I noticed the 2 upper seals Cessna P/N 0550157-29 & lower seal Cessna P/N 0550157-30 have deteriorated. I remember hearing that these seals are either not available and / or are ultra expensive. Are they that important other than letting hot air escape leaving less for the passenger compartment.
Are they available through other sources ?? Are they made of aluminum ? Could they be fabricated locally
Any thoughts or help would be appreciated.

Post by **Bruce Fenstermacher** » Wed Nov 01, 2006 2:10 am

Rick

You are right on the money. These seals aren't available though AWI was trying to make them for there complete exhaust offering.

Here is the previous thread about this subject: http://www.cessna170.org/phpBB2/viewtop ... ht=exhaust

I didn't realize there is supposed to be some at the bottom of the muffler till I looked again for your question.

Maybe that's one reason my heat sucks.

I'm going to check mine out but I'm pretty sure mine are missing. If they are I'll make my own out of an aluminum pipe. The ones I saw made by AWI looked like they cut the pipe straight then bent them as opposed to cutting on a curve.

Post by **GAHorn** » Wed Nov 01, 2006 4:57 am

The ones AWI displayed at Kelowna may not have been mfr'd by them. The originals also look like heavy-wall alum. tubing cut with a saw and bent to a curve.
I am pursuing getting some mfr'd locally and apply for approval, and hope to post somethng soon about it. Until I make that announcement however, you'll have to make your own or buy them.