Exterior block cleaning

[outsider347]

Soon to start my re assembly

Case halves have been well degreased several times, then power washed several times as well.

I'd like to get the stain & oxidation removed from the outside. A friend suggested a weak acid/navel jelly product that "works" the aluminum without a lot of scrubbing

any suggestion/thoughts?
tks

[turbo nut]

Google Vapor Blasting

[outsider347]

Originally Posted by turbo nut

Google Vapor Blasting

No one close by, and I really don't want to ship

[Trackrash]

I used Prep and Prime on my case. It helped, but it required a lot of brush work to get it really clean. Don't leave it on or it will darken the aluminum. In my case, I really didn't want it to look too shiny. I wanted it to be clean and new looking, not polished.

If you really want your case to shine, put it in a vibratory polisher.

[boosted79]

soda blast followed by cerakote matte clear

[Dpmulvan]

Your in Orchard Park there's plenty of places around Buffalo. + 1 Soda blast or Dry ice Blast then cerakote. If you have a good compressor you can use a harbor freight blaster with a few mods the most important being replacement of ball valve with proper media valve.

[Trackrash]

I wanted clean, not polished.

[Flat6pac]

Safety Kleen, degreaser, pressure washer, degreaser, pressure washer.
Gets the caked grease off.

[outsider347]

Originally Posted by Dpmulvan

Your in Orchard Park there's plenty of places around Buffalo. + 1 Soda blast or Dry ice Blast then cerakote. If you have a good compressor you can use a harbor freight blaster with a few mods the most important being replacement of ball valve with proper media valve.

I do have a good compressor/pressure blast setup.
Is the only pressure pot mod to swap out the bottom ball valve?
tks
ed

[Ken911]

ok so is cerakote just a paint that you can DIY? or do you have to take it someplace to have it done?

[boosted79]

Yes you can DIY. But make sure to mask everything so none gets on the inside of the cases, stud holes, etc. I use a small touch up gun to spray it. And you need a good organic mask, I have never smelled any paint like this, just taking a little whiff from the can will almost knock you over. It needs to be sprayed on in thin coats or you'll get runs. It's like 60-70 for a pint but that will be plenty. It's the best there is for clearcoating metals. I use the matte so it doesn't look glossy.
https://www.clearcoating.com/

[Ken911]

Did you use the MC-157 or the 161?

[Dpmulvan]

Originally Posted by outsider347

I do have a good compressor/pressure blast setup.
Is the only pressure pot mod to swap out the bottom ball valve?
tks
ed

Yes ball valves are not ideal for blasting material, you can make a simple valve using a piece of rubber hose and a clamp, or pay a $100 for a media valve. I also added a piece of pipe with several holes drilled in it that attaches to the tank fitting and goes up inside the tank. Cheap blasters get a bad rep, mainly because of the lack of a proper media valve and lack of decent dry air.

[boosted79]

I used the 161, the 157 is thinner which makes it easier to run.

['76 911S 3.0]

Ultrasonically cleaned:







How it looked before cleaning:

[outsider347]

[QUOTE=boosted79;9671981]soda blast followed by cerakote matte clear
[/SB

Did you use the SB from china freight?

[boosted79]

what is sb?

if it's sand blaster, yes. The siphon blaster cabinet, not the pressure pot that is used outside. But a better gun from TP tools and I have a cyclone separator going into a shop vac that I put outside of the shop. I have a big comp. system. 17 scfm or so and both water and air cooled aftercoolers to drop out as much moisture as possible.

[outsider347]

sb=
Soda Blaster

[boosted79]

I run soda in the cabinet after I vacuum it AND hose it out. I then immerse the part in water after the soda and then hose it off. I remove all galley plugs before degreasing and run gun brushes thru the galleys along with brake cleaner. I run gun brushes thru after the soda also and spray water thru all the galleys. It's a lot of work but the finished product with the cerakote is really nice.

when I'm blasting a case I also put rubber stoppers in the galley holes just to try to keep the soda out.

[boosted79]