9 replies to this topic

[Dusky]

Hi guys!
I bought a yank tank a few months ago,http://smclassiccars...ed-to-move.html
and its finaly at my house after my (Ex!) Fiancé decided she doesnt like me anymore.
Anyway, the car had loads of work done before, engine has less than 10 000 miles. But,its been sitting for almost 10 years now! Adding to the problems is the fact that its a NY car, so salt has been eating it for the last 10 years..

The brake calipers it has are Spotless on the inside, Will get pics soon, but the outside looks terrible, loads of rust. I previously cleaned calipers by bathing Them in vinegar, but I wonder if the Stainless inserts would react badly. Anyone got any insights? Its a simple chemical formula, but frankly in my current state of mind I can't really think straight.
As a matter of course ill be replacing all the flexi hoses and rust (I mean steel) lines as well.
Cheers

[Steve220]

Sorry to hear about the home troubles, chap.

Maybe worth pulling the pistons out and dropping them in a bath of Deox?

Edited by Steve220, 10 February 2018 - 01:59 PM.

[Alex_B]

If it was me I would probably pop them in a vice and use a wire wheel drill attachment on the outside. I would usually media blast smaller components like that but I wouldn't recommend that just because its not worth getting grit in the tiny pathways and whatnot. 

Once wire wheeled off mask up the sensitive areas and paint them. 

Otherwise nice car, at least you don't have to worry about NY weather on the body ;) 

[DeadSquare]

If you push the pistons in as far as they can go, it won't matter if there is any minor effect from the vinegar on the stainless, as far as the seals, because when you mount and bleed the calipers the unaffected part of the piston will be pushed back out, past the seal.

 

T.

[xrocketengineer]

You could try Evapo-rust. I have used it and works well. The only problem I have seen is that it removes zinc plating (it was half way gone anyway). I don't think that it will hurt stainless steel since it is not a plating. You need no gloves and it is biodegradable.

 

https://www.amazon.c...op&tag=pda0e-21

[Dusky]

[Fast Ivan]

the vinegar wont have any adverse effect on the stainless unless its left for long periods of time in the right conditions (acetic acid can aid crevice corrosion in the right conditions)

Wash the stainless of with water and check for signs of pitting and crevice corrosion, often found right under seals if they haven't moved for years

[Dusky]

And this is the result! :)

<iframe src="https://player.vimeo.com/video/258817938" width="640" height="360" frameborder="0" webkitallowfullscreen mozallowfullscreen allowfullscreen></iframe>
<p><a href="https://vimeo.com/258817938">Brake caliper cleaning</a> from <a href="https://vimeo.com/user33534664">Dusky</a> on <a href="https://vimeo.com">Vimeo</a>.</p>

[xrocketengineer]

That is very good! What did you end up using? 

[Dusky]

I used citric acid powder, diluted to a 5% mix, just because I didn't want to smell the vinegar
I'm amazed at how effective it is! Used the same solution to bathe my suspension arms etc. Everything comes out spotless and ready for paint! 
Very tempted to try some acid porting too, although that will be a whole different venture....