well i have some surface rust in my engine bay and prob some on the rear quarters (but havnt sanded the quarters back yet so not sure)anyways the bottom of my tray is pretty much packed full of rust but i dont want to be cutting it out just yet. im going to get it on the road stock and then in a yr or two and a few more dollars start looking at other mods. So the back tray has a kind of "chicken pox" look to it in areas. Some of the dots has even rusted clean holes straight through :S. But because i dont want to be cutting chunks and chunks of rusted metal out here there and everywhere im going to try and cut the worst parts out and jest weld over the other and fix with either bog or some more stronger stuff like fibre glass bog i think? anyways all suggestions, opinions and help much appreciated!! cheers

you say the rust is right throu, these are the areas that you need to cut out and replaise asap, the rust only bicums wors and fast. I segest these areas get first attention. If you can get another section and replace the hole thing. In too three years it might have spread too the chessy, and that is so unnesesery, many prob too.

I understand the money isent allways there, but youll save alot in the long run.

(Only my expereiens, my opinion)

The rust converter is mainly phosphoric acid with zinc oxide, butyl Cellusolve, copper carbonate and nitric acid. Is the swelling is caused by the delayed reaction of copper carbonate is triggered only by high temperature? or is it popping are all caused by Zn reacts with acid.

i used POR15 on the wagon, cut any rust out that was bad as i dont think there it much point trying to convert metal that is already #OOPS#ed
only used it on surface rust that could pretty much be sanded off anyway, but used the converter for peice of mind...cant really say if its worked or not, maybe get back to me in 4 or 5 years and i'll let you know

one thing to mention though, make sure you scrub the stuff off really well as it is acid, so if you leave it there the metal will just rust again. and it will do it much quicker than if there wasnt acid there

Cheers PIGDOG, i think i will just tough it out and keep on grinding and cut and weld and replace haha thanks for your input guys much appreciated!!!
(hey PIGDOG just offtopic but with your name and all it happens just to cause curiosity would you happen to be a shooter? its not often that you meet someone that is into datsuns and also a shooter haha. (im a shooter myslef thats why i ask :P) ) cheers

Hope you have fun, enjoy the project, would like to c the final outcome.
cheers

haha im not really a shooter, not unless there is a gun handy anyway. pigdog is a referance to a torago that i found before i registered on this site. not an actual pig hunting dog as such...would change my user name if i could

PIGDOG dont bother with the name, its origenal!!

yeh i agree with Kiri1 i wouldn't change it. its different and original as Kiri1 said!! and cheers guys i will start posting some pics when i get closer to finishing date. Cheers