White spotting on v6 supercharger.

[PhilJ]

Hi Folks,

I’ve recently noticed some white spotting on my supercharger - looks like dried-up water droplets. Not actually sure what is causing it, tried to wipe off a few times with a damp cloth but they keep reappearing! Anyone else encountered this?

Cheers.

 

[scc.131.fe]

on the unpainted sides of the housing, or on the black cover? pictures?

 

[Porter]

It's aluminum oxidation. Normal for uncoated aluminum surfaces. It's reacting with humidity.

You can eliminate it and prevent it with a product like ACF-50. Lasts between 6 and 12 months, depending on how wet it gets. They use it on aircraft to prevent airframe corrosion.

 

[FST]

Hi Folks,

I’ve recently noticed some white spotting on my supercharger - looks like dried-up water droplets. Not actually sure what is causing it, tried to wipe off a few times with a damp cloth but they keep reappearing! Anyone else encountered this?

Cheers.

I have exactly the same.. and not just the engine cover, it drips down to the plastic surrounding and see it ingresses.. tried cleaning it with so many products and it keeps reappearing :s it looks really bad.. and I think the cleaning products I have used made it worse on the plastic surrounding. Will share a picture tomorrow.

 

[PhilJ]

It's aluminum oxidation. Normal for uncoated aluminum surfaces. It's reacting with humidity.

You can eliminate it and prevent it with a product like ACF-50. Lasts between 6 and 12 months, depending on how wet it gets. They use it on aircraft to prevent airframe corrosion.

Thank you

 

[Porter]

I have exactly the same.. and not just the engine cover, it drips down to the plastic surrounding and see it ingresses.. tried cleaning it with so many products and it keeps reappearing :s it looks really bad.. and I think the cleaning products I have used made it worse on the plastic surrounding. Will share a picture tomorrow.

Yep most cleaning products will just move the oxidation around, rather than neutralizing it. You need something specific to aluminum, like Lear ACF-50 or CorrosionX. The Lear stuff smells better, FYI.

 

[Vampyre]

It's aluminum oxidation. Normal for uncoated aluminum surfaces. It's reacting with humidity.

You can eliminate it and prevent it with a product like ACF-50. Lasts between 6 and 12 months, depending on how wet it gets. They use it on aircraft to prevent airframe corrosion.

This is what I treat my engine bay with.

 

[Nova]

So what do we do, just spray this on everything under the hood?

 

[Vampyre]

So what do we do, just spray this on everything under the hood?

The way I use it, I spray some on any exposed metal in the engine bay and wire connectors on the engine (No belts) and then wipe down with a rag. When you drive the first time you will have a slight chemical smell when you exit the car. No smell inside.

There are a few youtube type videos on the use and application.

 

[Porter]

FYI they sell this in 50 gallon drums and have these crazy sprayer rigs that coat the inside of airplane wings with it. It's a very common process in most aluminum-intensive fields like that.

 

[FST]

This is how awful it looks.. and nothing helps getting rid of the spots on the engine bay and plastic surroundings.

 

[Porter]

This is how awful it looks.. and nothing helps getting rid of the spots on the engine bay and plastic surroundings.

View attachment 43108

The plastic just needs to be cleaned. Pop it out carefully, take it inside, and wash it with mild dish soap and a soft cloth or sponge.

 

[FST]

The plastic just needs to be cleaned. Pop it out carefully, take it inside, and wash it with mild dish soap and a soft cloth or sponge.

Thanks! Will do

 

[RoryBellows]

I just ordered a gallon jug of that ACF-50 I have some white (and gold) spotting on the non-painted portion of the supercharger. I figure if I get it now it will be easier than trying to get it later. I also got the jug so I can apply with a rag to minimize overspray. Not sure how that will work but Ill give it a go. It was pretty pricey so I hope it works.

 

[ADC]

I just ordered a gallon jug of that ACF-50 I have some white (and gold) spotting on the non-painted portion of the supercharger. I figure if I get it now it will be easier than trying to get it later. I also got the jug so I can apply with a rag to minimize overspray. Not sure how that will work but Ill give it a go. It was pretty pricey so I hope it works.

Be sure to grab some before and after pics... for science!

 

[scv]

For the discoloring, some whitish, some light rust, on the exposed aluminum supercharger casing, I used a toothbrush with a slurry of Bar Keepers Friend to remove oxidation/light rust. Then cleaned surface can be treated with ACF-50.......
White deposits on plastic not aluminum oxidation(dirt/water spotting)-clean then spray with any of multiple plastic trim shine product