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  #11  
Old 11-04-2013, 08:48 AM
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Kahuna Kahuna is offline
 
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Quote:
Originally Posted by Jerry Fischer View Post
Great thread, I look forward to following your progress. Did Larry V suggest a routine removal of the heat muff at annual cond. insp. to monitor the exhaust? (a pain but...)
Blue skies my friend
No he did not. But it seems a reasonable thing to do. I would NOT recommend removing the muffs unless you have the hardware to reinstall. Those threaded rods are notorious for breaking.
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  #12  
Old 11-04-2013, 09:38 AM
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GLPalinkas GLPalinkas is offline
 
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Quote:
Originally Posted by C-FAH Q View Post
Mike,
Just a thought about your mount. Cracks can hide under the powder coat and not be seen. With your mission, painting it so you can get a proper look at the joints may be in your best interest.
+1 from another Gary. I don't trust powder coating. YMMV
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  #13  
Old 11-04-2013, 09:53 AM
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Am I the only one who's (slightly warped) brain throws the suffix "weld" onto the thread title???
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  #14  
Old 11-04-2013, 10:09 AM
Mike Smith Mike Smith is offline
 
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Default Heater Muff

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I have had no reason to look under them. Hmmm. Whats that?
I have been doing my annuals, on certified and experimentals, accompanied by an A&P/IA. He always insists on removing the heater muffs to check the exhaust pipe. It's required for certified airplanes and given the possibility of exhaust entering the cockpit via the heater ducting it would be very wise to check it every annual.

Good luck with the engine O/H

Mike
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  #15  
Old 11-04-2013, 01:04 PM
JAT JAT is offline
 
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Mike,

The easiest stuff to remove the powder coat is Permatex Gasket Remover. Spray it on and let it set for ten minutes and the powder coat will wipe off with a paper towel. It will reduce the time from trying to get it all off with glass beads.

Jim
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  #16  
Old 11-04-2013, 09:00 PM
scsmith scsmith is offline
 
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Default removing powdercoat

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Originally Posted by JAT View Post
Mike,

The easiest stuff to remove the powder coat is Permatex Gasket Remover. Spray it on and let it set for ten minutes and the powder coat will wipe off with a paper towel. It will reduce the time from trying to get it all off with glass beads.

Jim
Boy is that a GREAT tip. A bunch years ago, I asked on this forum any ideas for removing powdercoat, and the only advise I got was, "burn it off with a propane torch." What a pain that was.

Thanks!
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  #17  
Old 11-05-2013, 05:21 AM
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great thread. just curious what other overhaul or replacement items are on your list[ hoses, wires, ect].

i dont pull my heat muff but i have a co detector that is VERY sensitive. i feel these exhaust systems are as bullet proof as they come.
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  #18  
Old 11-05-2013, 06:04 AM
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Kahuna Kahuna is offline
 
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I don't replace any wires that don't show signs of needing it. As for hoses, all my hoses are nearly new thanks to Tom at TS Flightlines.

Do to my activity of formation (throttle never stops moving), throttle cables seem to last ~400 hours at best. Ill be replacing that which has 300 on it. They are such a bear to replace, easiest to replace now with the engine off. Plus I managed to do a complete melt down of my throttle cable during a troubleshoot of my amp meter. Had a charger hooked up to my hanging wires from the alternator. Managed to short across the throttle cable and it melted the cable enough that it doesn't move now. ARGH. Stupid mistake but fortunately it needed replacement anyway.

Most of my adel clamps are junk. Oil covered, deteriorating, and nasty looking.

AFP fuel servo and bendix flow divider sent to AFP for overhaul and those items have been sent to JB so he can run the engine.
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  #19  
Old 11-05-2013, 07:04 AM
David-aviator David-aviator is offline
 
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Interesting post, Kahuna.

Thanks for taking the time to document it. Most of us do not fly as much as you but it is good info to know some things should be replaced.
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  #20  
Old 11-05-2013, 09:44 AM
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Kahuna Kahuna is offline
 
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Default New Smoke Injectors

In a previous post I mentioned the smoke injectors completely eaten/worn away as in this picture.


It would seem there has been a change in design from John at SA and these are the new style below. Looks fancier. I am concerned about those little spray nozzles getting clogged up and how Im going to clean them. Plus they are not cheap at $55 each which includes the SS clamps. $125.59 for 2 injector kits shipped to my door.



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