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hey got some rust i just found under the battery, doesnt seem to be severe (?)



would anyone mind giving me some pointers on how to repair it? was thinking of just sanding it and applying some paint over the top?

i've already degreased the area as it was quite oily and just applied some white vinegar

much appreciated

I'd use some rust converter before painting.

ah yes, i might just use that instead of paint, don't really care how it looks to be honest.

will it be sufficient though? the rust isn't too bad right?

I can't see where abouts you're located on my phone, but I have a big aerosol of rust converter that you're more than welcome to borrow.
A can is twenty bucks and you'll only need a few sprays.
I'm in SE Melbourne, give me a pm if you'd like some.

I had the same issue due to the previous owner putting the wrong battery type in there. Basically I sanded what I could back then used rust killer and sprayed it with some paint

thanks for the offer, but i'm in brisbane.

^ yes, exact same problem as me, wrong battery by previous owner.
thanks for the help, does not seem to tricky

I'd scrub it with a wire brush. Hit it with real rust converter, leave for a day or two then clean up and paint. You may want to check under the car in the same spot.


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^ yes good point, just looked underneath and all was good.
can you just apply the rust remover/paint with a paint brush? seems to be a confined place and don't want to get any on the carpet etc

Yes, spray into the lid then use a brush if you like.
It doesn't have to be pretty.

You can brush on POR 15

yes i was reading about POR 15, there is a very similar product called KBS Rustseal (Australian company).

From my understanding, you just prep - apply POR 15/KBS - prime - paint?

Still undecided between rust converter and POR15/KBS - still sanding at the moment, it's a bitch to get in the little grooves

I've used the POR15 with great success on a vintage car floor that was very rusty. I used a por supplied acid ( metal ready) to wash the rust , then rinsed and dried, before applying the por paint. You can get por in 100ml tins in silver. Not used KBS but my local auto paint supplier now carries it and states it is just as good as por. (But he would say that)


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"wrong battery"??

my car has had a good old lead acid since before i bought it in 2001. not an once of rust even though the car has NEVER been garaged...sat outside in all weather (not even a car port) up until 6 months ago when we finally got a house with a garage

KBS is as good as POR15, I have just painted the underside and engine bay of my S14 race shell in KBS, was pretty easy and with the condition of the shell all I did was pressure wash and let dry and then paint straight over the metal.

The floor will be done the same once I get the seat mount fabricated.

Either KBS or POR, have only used POR and it's been great.

Just make sure to follow the prep instructions properly (including wait times!)
it stays slightly soft once dry, not sticky soft, but soft enough to be pretty damn scratch and chip resistant.

You will need to strip the paint from the entire area first, it doesn't adhere to paint as well as it does metal.