Annoying problem!!

[King Fisher]

Hi chaps, Nick has a rather annoying problem with his S's chassis; he painted it with 2 coats of red oxide, which were then lightly sanded to give a nice rough surface for his top coat to bind to. Before he applied the top coat he wiped any dust off of the red oxide with a damp cloth, and allowed it to dry. He then applied a layer of Rustbuster Epoxy Mastic, under the assurance it was the bees knees. He mixed it as per the instructions, and painted it on. He applied two coats overall, but only applied the second once the first layer had started to harden. Now, when he jacks the car, the epoxy (and sometimes the red oxide) flake off. He now uses a soft pad on his jack, but what can he do to stop his chassis going rusty again? It's been waxoyled, but obviously the waxoyl comes off when the paint comes off!! Ideas would be excellent,

Thanks,

Tony

[King Fisher]

Hi guys, thanks for the replies. Nick mixed it 50/50 hardener/paint, as per the instructions. You then let it stand, and then add thinners to it before painting it on. The red oxide holds up in most places, but even that can't stand a jack sometimes. Interestingly, on his trailing arms and wishbones he used red oxide followed by two coats of spray hammerite, which has proven to be immensely tough. Perhaps hammerite is the pain of choice afterall?

[King Fisher]

Spathodus77 said:

Hi,

I've used epoxy mastic on my drivers side outrigger and it has clung on fantastically well over the past two years with no chips or rusting showing through. I applied it direct to the bare metal as directed and I think I did two or three coats. I've also used it on the bonnet hinges and chassis cross member under the radiator and it is in fantastic shape in these areas too. I can't say the same for the passenger side outrigger which is painted with an alternative product.

These products are formulated to go onto bare metal so asking them to bond chemically to something else is probably the reason that some of them start flaking off.

Ralph

Hi Ralph,

The company actually state they can be used as a topcoat. This is what Nick did, and it has stuck fine in some places, but not in others.