To POR15 or not to POR15 is the question

[DubSteve]

So... The mk3 is getting finished this year thats for sure, however I have thought of por15 the underneath of the car!

I know cars do not rust as they do in America and the UK but I would like to make the car as bullet proof as I can

So the question is can you por15 straight over the underside? Or do you have to cut back all of the undersealer and $hit to put it on?

Cheers Steve

[sydVR6]

Por 15 works on bare metal - not worth applying it over body deadener, etc.

Another idea would be to use some Fisholene and go all through the body cavities and chassis holes/gaps, etc.

This dries as hard as a rock, gets into all your cracks ( ) and is a great corrosion preventer.

Works very well on the inside surfaces of your panels, too.

Odour shouldn't be a problem once dry.

[DubSteve]

There is also another thing that the US and UK guys use which is stone chip? Maybe that would have the affect that I am after, any ideas?

[rayray086]

A similar product is Septone's hammer finish - resistant to debris and all that, but to a certain degree of course (the finish won't stay if you scrape subframe, as an example ). I think you can't go wrong with POR15, but as Reef as mentioned, only go for it if you're really stripping the underside to address any other issues. Otherwise, I think it's fine as it was from the factory.

[sydVR6]

This sums up Stone Chip pretty nicely.

http://www.mig-welding.co.uk/stonechip.htm

Yeah, as Ray says - the factory underside protection is pretty good. It's designed for salt ravaged euro roads, so it's over spec for Australian conditions.

If you have any nasty scrapes on the underbody you want to patch up, you could sand back those areas with a coarse grit and then apply Por 15 to exposed metal, before going over with body deadener (Septone), for a factory look.

[Mrk_Mickey]

What the hell do you want to do it for lol.....the cars have lasted just fine for 15 years, ''if it ain't broke don't fit it''

[Lorenz]

Spend the extra coin (that you would spend on doing this) on getting the car done quicker

[Golf Houso]

What the hell do you want to do it for lol.....the cars have lasted just fine for 15 years, ''if it ain't broke don't fit it''

You'd be surprised how many MK3's are already rotting, my old GL had to have the RL door and sill repaired due to rust and it was a 98'!!!

[Transporter]

Also worthwhile is http://tectyl.valvolineeurope.com/ especially for cavities.

[static1800]

May as well do it now while its off the road, do the the inners guards also.

[DubSteve]

What the hell do you want to do it for lol.....the cars have lasted just fine for 15 years, ''if it ain't broke don't fit it''

Why not cause I can

[Golf Loon]

Its because he doesnt want to ever get to actually drive this car.

[DubSteve]

Its because he doesnt want to ever get to actually drive this car.

Hehehe I do and will this year, as far as it may seem.

[Mrk_Mickey]

Really hope so dude...