924Board.org

jessy1984 · Joined: 09 Jun 2009 Posts: 82 Location: belgium

hi while working om my 924 this weekend i wanted to polish my weels
i cleaned one and wanted to polich them but i cant get them right

i tried by wetsanding them but the aluminium is to hard i think it has magnesium in it i tried polishing them also with an aluminium polich and also with a polish for valve seats with no result

so how do you guys do this to get them to almost chrome

BionicBalls · Joined: 05 Jan 2009 Posts: 642 Location: Charlotte, NC

Time and patience. what grit of sandpaper are you finishing with before you polish?
_________________
1980 924 NA
1982 931

jessy1984 · Joined: 09 Jun 2009 Posts: 82 Location: belgium

Vince Ponz · Joined: 02 Nov 2002 Posts: 3581 Location: Florida

Here in the US we have a product called Easy Off oven cleaner that worked for me. It will remove the coating on the wheels. You can then polish the wheels with metal polish. In the how section of this site it explains in detail how to do it with the least amount of work.
_________________
"Never let them see you sweat"
77.5 924 modified track car
79 931 Euro stock
88 924S SE
87 911 Targa stock

Smoothie · Posted: Mon Mar 22, 2010 2:28 am Post subject:

+1^
The flat wheels (aka- trashcan lids, or "928 wheels") are anodized. Anodizing produces
a very hard surface. Easy-Off (basically lye in a spray can) removes anodization and
makes sanding-polishing much easier..
_________________
"..it's made in Germany. You know the Germans always make good stuff."

'82 924T, US version, dark green metallic, 5 speed Audi 016G gearbox

jessy1984 · Joined: 09 Jun 2009 Posts: 82 Location: belgium

Joes924Racer · Posted: Mon Mar 22, 2010 5:24 am Post subject:

Its kind of like getting in a zone . Cause it takes alot of time.
Sanding is what takes time. Get a bowl of soapy water. Just sand
dont push to hard, though do push hard enough. Just know you could do this for 3 hrs before you started getting somewhere.. After the oven cleaner removes the anadizing youll get better results. Keep us posted big guy, ok Jessy1984. Doesnt Ideola aka /Dan Becket have a post on a chart topping trash can lid polishing technique he did.

As I remember he used a dishwasher also. Or maybe it was an oven any
way look at his post.

You can look at my wheel post to get the name of the polish you should
use. Mothers aluminum wheel polish is good then youll need a wheel wax sealer also.
_________________
1979 porsche 924 Na
1980 porsche Turbo 931GT Replica
Have u ever driven a turbo.

ideola · Joined: 01 Oct 2004 Posts: 15550 Location: Spring Lake MI

I followed Vince's instruction, only on mine, I found that I had to leave the EasyOff on the wheels for at least TWICE the amount of time as in his writeup. I'm not suggesting you do this, as it could be variable with different sets of wheels depending on the condition of the finish. Also, I can confirm what Vince mentions in that writeup about the standard EasyOff vs. the scented stuff. The scented stuff did not work nearly as well. Stick with the standard Extra Strength oven cleaner.

When I did mine, it took 3 applications per wheel, leaving each application to sit for 10 minutes. By the third time, I was able to scrub the finish off with a scotch bright pad. Then it was just a matter of sanding and polishing. I used Mother's Aluminum Polish. Worked great.

Here's my writeup: Vince would be proud
_________________
erstwhile owner of just about every 924 variant ever made

Joes924Racer · Posted: Mon Mar 22, 2010 6:38 am Post subject:

Jessy1984 Good luck Amigo.
_________________
1979 porsche 924 Na
1980 porsche Turbo 931GT Replica
Have u ever driven a turbo.

BionicBalls · Joined: 05 Jan 2009 Posts: 642 Location: Charlotte, NC

600 grit is kinda grainy. I went all the way to 2000 grit with my wheels. I guess it all depends on the cut of the polish that you are using in the end. I originally tried stopping at 1000 grit but I kept getting fine sand scratches after polishing that were annoying me, but I'm kinda OCD about my car. So that's why I went all the way to 2000 grit which got rid of them.
_________________
1980 924 NA
1982 931

Joes924Racer · Posted: Mon Mar 22, 2010 2:50 pm Post subject:

Yea i have to do the same. Seems theres some scratches that were put there as I had to run a wire wheel in a groove that runs around the flukes
in a circle on the fuches style rim. Dont want those scratches to be seen really. I did this after alot of sanding close to the groove wouldnt remove
dark crud that i couldnt get. After that i didnt spend much time sanding there. It does take alot of work & a clear head. All the crud is gone just those scratches remain. They wont polish out even after using a buffing compound before the polish.
_________________
1979 porsche 924 Na
1980 porsche Turbo 931GT Replica
Have u ever driven a turbo.

Joes924Racer · Posted: Wed Mar 24, 2010 2:44 pm Post subject:

Whats up, are you gonna give the EASY OFF a go next weekend?
_________________
1979 porsche 924 Na
1980 porsche Turbo 931GT Replica
Have u ever driven a turbo.

jessy1984 · Joined: 09 Jun 2009 Posts: 82 Location: belgium

Joes924Racer · Posted: Mon Mar 29, 2010 5:09 am Post subject:

Got pics.
_________________
1979 porsche 924 Na
1980 porsche Turbo 931GT Replica
Have u ever driven a turbo.

jessy1984 · Joined: 09 Jun 2009 Posts: 82 Location: belgium

here 's a pic after i removed most of the coating
i didnt have much time to do more but tried on a small part to see what is under it as you can see in the pic
there is a lot of damage i think from salt over the years
this i think wont be able to get it out maybe just santblast them