Mike R's GS550/650 bare bones street racer

[boontonmike]

Before dipping you cases in the alumiprep and Alodine you may want to do a test first. I have found the impurity in the cases and other aluminum parts, compared to 2024 and other aerospace aluminums, causes issues. I have seen it turn black, from the Alumiprep.

Also the glass bead leaves to smooth a surface for adhesion, I use it for cleaning, paint and corrosion removal. After that I give it a quick blast with aluminum oxide to roughen the surface, paint adheres WAY better. Adhesion may not be a problem with powder coat, never had powder coating done to compare. But with other paints this is my experience. As of lately I have been using GunKote with favorable results over 2 part paints.

Great job so far, she is a beauty!

This is some useful info, thank you. a couple questions:

If the alumprep turns it black and I'm painting it black would it even matter? or is it turning black for bad chemical reaction reasons?

The Gunkote as in epoxy aerosol cans? And if so what do you use as primer or do you paint directly on the aluminum?

 

[Fjbj40]

This is some useful info, thank you. a couple questions:

If the alumprep turns it black and I'm painting it black would it even matter? or is it turning black for bad chemical reaction reasons?

The Gunkote as in epoxy aerosol cans? And if so what do you use as primer or do you paint directly on the aluminum?

Chemical reaction, I assume. I reblasted it after it happened.

http://www.kgcoatings.com/gun-kote-finish you use their treatment then spray on the color and bake. Way more durable than any aerosol can paint.

 

[boontonmike]

Chemical reaction, I assume. I reblasted it after it happened.

http://www.kgcoatings.com/gun-kote-finish you use their treatment then spray on the color and bake. Way more durable than any aerosol can paint.

I ordered the Alumiprep 33 and Alodine 1001 . I'm going to give that a try and if it fails like you had happen I'll just blast it again. I'll have the chemicals for other aluminum parts I want to paint anyway.

I researched the Gunkote and I'm going to go with that. I already have a touch up sprayer and oven available. Thanks for your help !

 

[boontonmike]

Engine case blasted - top

Engine case blasted - top

Here is the top case blasted:

 

[boontonmike]

Here is the bottom case blasted:

 

[Fjbj40]

Did u remove the oil gallery plug and do a thorough flush?

 

[boontonmike]

Did u remove the oil gallery plug and do a thorough flush?

I removed everything on the cases except the head studs. Flushed in a parts washer and used brushes through every passageway and threaded hole. I am going to run both cases through my dishwasher for a final cleaning and degrease before moving on.