Smidge of surface rust under rear bumper area, how to sort??

[jimGTS]

Had my rear bumper off for some tweaks.
Pain!

Anyhoo, spotted a smidge of rust on the extreme lower edge where the bumper bolts, also inside where the funny 'vent' is.

How best to treat and project these given they are not seen?

I've seen on here people mention some foam stuff they put in the area under the rear speakers to halt any current rust on the sills? What is this again? As seems like perfect thing for the 'vent' area too as hard to get to?

And the lower edge? How best to DIY sort this?
Also probably need to clean and Underseal on the inner side, ie around exhaust mount areas and under the boot itself?

Any advice and products you can recommend?
Be very handy if I can pick these up from halfords?


I understand this isn't extreme or that bad, I've seen plenty worse! So that's something to be thankful for.

Thanks all




















What do use to Underseal?

[juliankv73]

A quick search and it seems POR15 is the stuff to use right first time.

http://www.imoc.co.uk/forums/viewtopic. ... light=rust

I had some rust on one of my doors so after removing the bubbling paint I applied some BiltHamber deoxgel which allowed to dry and then "washed" off with por-15 surface prep



Going...



Going....



Gone...



Then a final wash with surface prep for at least 10 mins, dried with hair dryer to get rid of any moisture then about 3 coats of the rust por-15 preventative paint. When Ive done all the areas I will be primering and painting over



Ive no faith whatsoever in these "rust converter paints" - best to remove the rust with the deox then go through the por-15 process.

http://www.imoc.co.uk/forums/viewtopic. ... rust+treat

Starter kit on ebay:-
http://www.ebay.co.uk/itm/like/32158080 ... 108&ff19=0

https://www.youtube.com/watch?v=uuDcvwEIkPI

HTH

[C35Rob]

the foam you mention is what people remove to prevent moisture being held against the metal.



which goes here (looking down at the inside of the back end of the drivers side sill)



(note, that's dust, nothing more)

for that area I'd wire wheel or polycarbide disc it off (the outside bit) , maybe see if you can get a little spot blaster on the inside to get it all down to shiny clean metal then a good protective paint.. either an etch primer followed by a stonechip top coat, or some por15

as for underseal - gravitex

[jimGTS]

Na it defo the foam type you spray in there 'after you've removed the 'foam'.


Something I read a while back anyways.


In the end I picked up some kurust

Sanded off, kurust, another sand and got to this.
I assume i can just leave it with its black colouration?
(kurust turns it like this)

I'm tempted to hammerite that area now

[C35Rob]

yeah the black is just the chemical reaction, smash some paint over it

[alan_uk]

i would use a flappy disc on a grinder until its all back to shiny metal

then hammerite it or better still spray some stone guard over it then a layer of paint for good measure thats what we do at work