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I can reply that there is a distinct problem with Powder coating steel as
well.

I had to get rid of my 1985 Honda Civic 4WD  as they powder coated the rear
axle.

First, one of the panhard rod attachments rusted away... No easy feat as it
came from the factory about 2 mm thick stamped bracket.  No big deal as I
took some 4130 and gas welded on a new bracket.  But big flakes of rust
continued to form under the powder coating.

Honda told me that they only warranted it for 10 years. My 1968 Chevelle has
essentially the same rear end, but no problem after 33 years.  My
brother-in-law has a l911 car... no problem.  But neither of these are
powder coated

So when the axle fluid started leaking thru the rust and leaving puddles on
the drive, I sold it.

All because the powder coating created a great climate for corrosion of the
steel.

If I had known that the powder coating would do this, I would have removed
it when I first got the car as it is a much better car than its replacement.

Cy Galley
Editor, EAA Safety Programs
cgalley@qcbc.org or experimenter@eaa.org


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