View Full Version : Treating rust what do you use?
21-09-03, 10:31 PM
Im in the process of replacing a very rusted front scuttle panel in a VL commodore, ive removed all the spot welds and lifted the panel and cleaned up all the rust but there are still two pieces of metal lapped over each other and they have slight rust beween them so ive seperated them slightly and sprayed rust convertor (Phosphoric acid) between them.
Im thinking spraying cold galvanising spray which claims to be 95% into the gaps before i close them up again and also putting it between the new panel and the top existing panel to, does this sound like a good plan to stop repeated rust problems?
POR15 could be worth a try.
I am in the process of doing a windscreen frame on the magna.
Very light rust.. so an easy job.
Anyhow with owning a few Valiants I consider meself to have some knowledge on this subject.
I electric wire brush as much rust off as I can then paint the rusted area with Rainex Rust buster (Phosphoric acid).
I leave this for three days at least. Then I paint Wattyl Rust Converter onto the rougher metal parts before using filler.
If your not using filler go back to bare metal and use POR15. It is sorta like etching primer in that you put it to bare metal.
It chemically reacts to the metal and prevents mosture from getting in.
Then prep as per normal.
Oh most important keep the bare meatl as dry and as clean as you can esp before appling a coating. Prepsol is a Godsend for removing greasey bits of metal work before paint.
23-09-03, 12:44 AM
Thanks guys, yeah my rust convertor ate it all, ive mechanically cleaned it all back to bare shiny steel with 3m abrasive wheels and coated it in 95% cold galvanising paint.
The sides and the tops are going to require bead blasting to get it all out due to deep pitting so im going to do that in the weekend then coat it all in gal spray until its ready for painting.
23-09-03, 09:05 AM
all thsi gal spray and POR15 ets.. are they just in presure pack cans or threw a spray gun?
23-09-03, 07:04 PM
The gal spray is in a pressure or spray gun, the Por15 is a sprayer bottle right?
POR15 in in a tin so you either brush it on, put it in a spray gun.
Be aware that POR15 reacts with mositure.
Gal spray must try that one out... thanks for that.
24-09-03, 11:22 PM
Keeps getting better, bottom is done, had to put a small plate into the firewall under the scuttle panel and mig that in, the brand new scuttle panel will completely cover it, good piece of advice, gudgen pins, hammers and vices are excelent for making curves in steel. Had to do that to copy the top of the firewall.
The drivers side pillar is badly pitted for about 5 inches in the windscreen recess up the side and is very thin, ive cut that out so it looks like its time to make another plate and weld that in. Been thinking about actually lead wiping the plate as well.
Going to bead blast the rest out of the sides and tops on saturday, hopefully i dont find anymore holes.
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