painting rock sliders

[89gqpatrol4x4]

Hi, I built some sliders at least 6 months ago and simply wiped them clean and then sprayed them with killrust (black) The problem is that the paint hasn't stuck very well and it even peels off with the pressure of the garden hose. So I'm going to repaint them and my question is what should i do to prep the surface before repainting? There must have been some oil still on the steel when I painted the first time, so I think a good wire brushing is in order first, but what else?

[Stropp]

wash with prepsol and undercoat them first then paint.

[taslucas]

Yeah give them a good sand/blast and a good clean with prep wash (wax and grease remover) then undercoat with an etch primer.

[threedogs]

Sand blast then some POR15 would be Ideal, cant chip this stuff even with a hammer,
Highly recommend

[Parksy]

Plus one with the por 15. They have several products to prep the metal first. Marine clean is used to clean the metal, and this works very well. Then metal ready to etch and kill any rust. This is like an invisible primer and leaves a protective zinc phosphate film, then a couple of coats of por 15. Though por 15 isn't uv stable and as the rock sliders will see sunlight they will have to be top coated with something while the por 15 is still tacky. Being that the rock sliders will take a beating, por 15 is probably the best for this role due to its ability to bend and twist and remain flexible without chipping/peeling. Great stuff. The majority of my patrol underneath has been coated in por 15.

[threedogs]

Thanks Parksy, came across a similar product at the AAAS at Jeffs Sheds but the name escapes me,
Por15 ideaL for painting diffs too after laminating etc, Any application where wear is an issue POR15 will solve it.
I'm totally sold on this stuff, BFF put me onto it from his HOTROD back ground, comes in different colours to I think
although not 100% on that

[Parksy]

Yeah it does come in grey as well, but not sure if there's other colours with just the ordinary por15. There is a high temp por15 paint out there that comes in an aluminium finish as well as black and grey. But not sure either apart from those colours.

[89gqpatrol4x4]

Thanks guys, where can I get this por15? and is it in a can?

[Parksy]

Can be bought on eBay. Not cheap stuff but it's quality you can rely on. There's a hardware shop where I live that sells the stuff, lucky for me. Comes in a pot, brushing it on is easiest.

[89gqpatrol4x4]

does it look good brushed on, I don't want a sh*t looking job

[89gqpatrol4x4]

so after cleaning with marine clean and a couple of coates of por15 what do you suggest I seal it with? some sort of clear?

[Parksy]

Por15 has a self levelling ability, so when you brush it on, the brush marks just disappear as the paint slowly settles on the surface. Of course this depends on how well the surface has been prepared.
I'm not sure if clear coat has any uv blocking abilities, but por15 also make top coats which would be perfect for this application. Failing that, spray paint will do the job so long as the por15 isn't allowed to completely dry before applying the top coat.
Here's a pic of a fuel tank I recently painted in por 15. No brush marks.
http://img.photobucket.com/albums/v92/Pakas/E2997040-8580-4B09-A9A6-D06E536F3B2C-4741-0000031378D1D3CD.jpg

[04OFF]

does it look good brushed on, I don't want a sh*t looking job

Yes it flows and sets very flat and very nice (no brush lines at all), unless you put too much on, then you can create some minor bubbles, read/follow insructions carefully and you wont have a problem.


While it is very tough, in the real world, you CAN actually hit it with a hammer and get it to chip ( i tested this out ), but it will not come off your skin once dry, you have to grow it off !







Now, after having both, IMO, powdercoat is a better/stronger choice if you have one, but, POR 15 is easy to touch up on a regular basis, plus powdercoat is obviously not practical an a chassis if you can not strip the rest of the car away.



Do not under estimate the work involved in brushing your chassis with this stuff, it pretty much took me 3 days to do 2 coats doing chassis and diffs.



As mentioned POR 15 is not UV stable, im pretty sure it will not fall off or break down after sun exposure, just discolour , so a decent paint over it is handy, i have black 2pac paint over mine where the sun may hit it.

[threedogs]

Best product ever for 4x4 applications

[GQ TANK]

I use chassis black - every once in a while I will reapply