On 07/13/2017 07:22 PM, Stormin' Norman wrote:
Does anyone have first hand, personal experience removing and
neutralizing corrosion on cast aluminum?

I was given a never used, 3 year old pressure washer, 3k psi, 190cc
(6hp) Honda engine. The unit was stored in a garage that was about
200 yards from the pacific ocean.

The owner could not crank the engine and didn't want to be bothered
with it. Upon examination I discovered a fair amount of surface
corrosion on the flywheel and some of the cooling fins on the
crankcase and cylinder housing.

After knocking off the corrosion from the flywheel, removing the spark
plug and inspecting the cylinder I am able to easily crank the engine
by hand.

I would like to completely remove all the corrosion and neutralize it.
I remember the air crews using soft wire wheels, phosphoric acid,
detergent and lots of clean water to deal with some aircraft
corrosion.

Does anyone have first hand experience dealing with this kind of
issue? If so, would you please share your knowledge?


In addition to Boeshield mentioned by gfretwell, the following are also
used in the aluminum aircraft world:


ACF-5

https://www.amazon.com/Lear-Chemical.../dp/B000P1C8UO


CorrosionX

https://www.amazon.com/Corrosion-X-9.../dp/B003HFTI0S