Olderisbetter
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This is just to show a result of citric acid on some brake drums i got for my moggy 1000, The drums are Wolsley 1500 larger drums so a bit of a period upgrade. I think most citric acid powder is the same so i used this from Ebay.
The drums came off car that had been sat a few years and even after a clean off looked like this.
I used about 1/2 and egg cup full and added water at about 80c, After 48 hours with a few stirs they came out and got cleaned off with a brush and then a coarse stainless scourer and they looked pretty good.
As they are going on my own car i gave them a decent coat of etch primer and then a finish of satin black.
The paint inside the drums was cleaned off with emery paper so they should just drop straight on and work nicely.
The drums came off car that had been sat a few years and even after a clean off looked like this.
I used about 1/2 and egg cup full and added water at about 80c, After 48 hours with a few stirs they came out and got cleaned off with a brush and then a coarse stainless scourer and they looked pretty good.
As they are going on my own car i gave them a decent coat of etch primer and then a finish of satin black.
The paint inside the drums was cleaned off with emery paper so they should just drop straight on and work nicely.
