Printable Version of Topic
Click here to view this topic in its original format
914World.com _ 914World Garage _ what is the way to clean the aluminum impeller housing?
Posted by: Type 47 Dec 18 2022, 09:31 PM
Not sure if "you guys" is proper English or not, maybe I should have said you'uns or youall: y'alls.
Anyway, I put some vinegar on it and it kinda looked at me, with that "what are you stupid" look, so then I used some muratic acid, like they use in pools. It started smoking and making bad smells . I got the "what are you really stupid" look as I coughed off outside, and I thought maybe I should go inside and ask the folks with the nice looking engine bays what to do.
Posted by: iankarr Dec 18 2022, 10:07 PM
There’s magnesium in the housing. It will react to hydrochloric acid by turning the metal into hydrogen gas. No bueno.
I like to have the housings soda blasted. Then you can decide whether to coat it. There’s a rattle can paint called “alumi-blast” which I think looks good. But you have to make sure everything is super clean.
Good luck and, as they said at Woodstock, stay away from the acid, man…
Posted by: 914sgofast2 Dec 18 2022, 10:08 PM
Read the "1.8 cheap junk rebuild" thread over on the Type4Forum or the 411/412 forum on the Samba.com for cleaning do's and don'ts.
Posted by: PatMc Dec 19 2022, 08:08 AM
Glass bead blast and a good coat of 2K clearcoat makes aluminum look good and stay looking good.
Keep acids / caustic cleaners away from aluminum and magnesium
Posted by: Type 47 Dec 19 2022, 10:53 AM
Thanks guys. super helpful
Posted by: maf914 Dec 19 2022, 05:07 PM
I like to have the housings soda blasted. Then you can decide whether to coat it. There’s a rattle can paint called “alumi-blast” which I think looks good. But you have to make sure everything is super clean.
Aluma Blast is an Eastwood paint product.
https://www.eastwood.com/search/?q=aluma%20blast
Posted by: Type 47 Dec 19 2022, 07:08 PM
I like to have the housings soda blasted. Then you can decide whether to coat it. There’s a rattle can paint called “alumi-blast” which I think looks good. But you have to make sure everything is super clean.
Aluma Blast is an Eastwood paint product.
https://www.eastwood.com/search/?q=aluma%20blast
this looks like a good idea, since i've tainted it in spots with the pool acid.
Posted by: bkrantz Dec 19 2022, 07:56 PM
I had mine media-blasted, and then I painted the sections with a matte epoxy clear coat. It darkened the color just a bit.
Posted by: 914werke Dec 19 2022, 10:32 PM
Im working one one right now....
After media blasting it showed all sorts of voids, holes sort of like it had been rotting?
Ive done a few of them & this is a first for me.
Looks like Ill need to fill it with allmetal & sand to get it back to acceptable.
Powered by Invision Power Board (http://www.invisionboard.com)
© Invision Power Services (http://www.invisionpower.com)