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-   -   Super 8. Documenting an engine overhaul with JB Aircraft (https://vansairforce.net/community/showthread.php?t=106087)

Kahuna 11-04-2013 08:48 AM

Quote:

Originally Posted by Jerry Fischer (Post 822842)
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.

GLPalinkas 11-04-2013 09:38 AM

Quote:

Originally Posted by C-FAH Q (Post 822095)
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 :)

Mike S 11-04-2013 09:53 AM

Am I the only one who's (slightly warped) brain throws the suffix "weld" onto the thread title???

Mike Smith 11-04-2013 10:09 AM

Heater Muff
 
HTML Code:

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

JAT 11-04-2013 01:04 PM

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

scsmith 11-04-2013 09:00 PM

removing powdercoat
 
Quote:

Originally Posted by JAT (Post 822952)
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!

turbo 11-05-2013 05:21 AM

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.

Kahuna 11-05-2013 06:04 AM

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. :mad: 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.

David-aviator 11-05-2013 07:04 AM

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.

Kahuna 11-05-2013 09:44 AM

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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