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Should I paint air intake pipe flange where I removed paint?
http://thorp18.com/thorpforum/viewtopic.php?f=36&t=8095
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Author:  jtwigg [ Sat Jun 10, 2017 9:38 pm ]
Post subject:  Should I paint air intake pipe flange where I removed paint?

Today I cleaned up parts of the engine. The gasket material on the air intake pipes was really stuck to both the pipe and the cylinder. In cleaning it off the pipe's flange, I removed any paint that was there. Should I repaint the flange? I'm trying out the Poll feature on this question; please comment and vote! O:-)

Attachments:
File comment: The intake pipes had this same gasket material stuck hard to them.
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20170610_011843.jpg [ 2.19 MiB | Viewed 4741 times ]
File comment: Cleaning off the gasket material removed the paint
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20170610_222239.jpg [ 1.59 MiB | Viewed 4741 times ]
File comment: Detail
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20170610_222153.jpg [ 1.08 MiB | Viewed 4741 times ]

Author:  Rich Brazell [ Sat Jun 10, 2017 10:22 pm ]
Post subject:  Re: Should I paint air intake pipe flange where I removed pa

I really think you need a "clean" mating surface . :P The Lycoming overhaul manual may shed some lite on this ? ???

RB O0

Author:  1albee [ Sun Jun 11, 2017 6:37 am ]
Post subject:  Re: Should I paint air intake pipe flange where I removed pa

You don't paint the inside of the intake tube, so painting the face of the flange is not necessary. The end where the rubber tubes slip over the un flanged part of the tube I don't paint either, same with the oil pan tubes. If you don't hanger and tie down on a wind swept ocean beach you may see some corrosion.
Phil
118BC

Author:  jtwigg [ Tue Jun 13, 2017 10:26 pm ]
Post subject:  Re: Should I paint air intake pipe flange where I removed pa

Thanks, everyone, for your votes and comments. If you saw the results, 4 out of 7 votes were to get her flying. So, I've decided not to paint these tube flanges. I sanded them with a fine sanding block and they are very smooth and should seal well. That's good enough for me. Thanks again!

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