I'll show how I cleaned my rear discs which were very rusty. I got the idea from restoring old bicycles.
I took a very rusty disc from another Sprint beyond use, it's pitted from rust but perfect for this.
There's other products for this but I found Brown Vinegar works brilliant and is cheap to buy in 2 litre bottles from the supermarket.
It's cheap to buy 10 litres if you like for big items. Just fill a bucket till the item is submerged but clean any oil off first then just leave it over night. After 10min you can see the chemical reaction, it starts bubbling then after a while a brown rusty foam will come to the surface.
The next day rinse the item with water, let it dry and literally with one pass of a wire wheel it's as clean as you see in the pic's. It's so easy it's no work at all.
I could use a wire brush by hand but wire wheel attachments get into tight spots. It's that easy it's no work at all.
You can tip the vinegar back into containers and use it again later over and over. The bucket leaves behind black residue which is dead rust.
Hopefully this can help people out doing that resto project.
Last edited by Ricky Ricardo; 08-11-13 at 12:16.