Hub parts / high temp paint & dinitrol - good or bad idea?

SMG · Aug 26, 2019

My front hubs (drive member / brake shield / hub / callipers) are very tatty, with flaky paint / grime / oil / old waxoyl / surface rust, so I'm going to treat them to a good wirebrushing followed up by some spray paint.

I've got some Hammerite high temp spray paint (no primer needed), but am wondering if I should first give some of the parts a quick spray with some Dinitrol RC900 rust convertor that I've got lying around.

Wasn't sure if that was a good idea though on the parts that are going to get hot? The Hammerite is OK up to 600C, but I think the ignition temperature of Dinitrol is 270C. I'm thinking avoid Dinitrol on the callipers, but rest would be OK?

Also assume it's pointless painting areas that will be mated against other areas (drive member to stub axle for example).

Any advice would be greatly appreciated.

Cheers

SMG

Henry_b · Aug 26, 2019

Should be ok on the heat shields.

I'd just do straight VHT on the calipers TBH.

Thor 1950 · Aug 26, 2019

That will work nicely. I power wire brush mine and used brake cleaner to wipe things down. Taped the rotor face and sprayed with rustoleum X2 spary can

Al2O3 · Aug 26, 2019

SMG said:
My front hubs (drive member / brake shield / hub / callipers) are very tatty, with flaky paint / grime / oil / old waxoyl / surface rust, so I'm going to treat them to a good wirebrushing followed up by some spray paint.

I've got some Hammerite high temp spray paint (no primer needed), but am wondering if I should first give some of the parts a quick spray with some Dinitrol RC900 rust convertor that I've got lying around.

Wasn't sure if that was a good idea though on the parts that are going to get hot? The Hammerite is OK up to 600C, but I think the ignition temperature of Dinitrol is 270C. I'm thinking avoid Dinitrol on the callipers, but rest would be OK?

Also assume it's pointless painting areas that will be mated against other areas (drive member to stub axle for example).

Any advice would be greatly appreciated.

Cheers

SMG

I think even the calipers will be ok. When I did my rebuild I put new calipers on the back, but I primed them and spray painted them with a rattle can from Halfords. They have not burst in to flames and the paint shows no signs of heat damage over three years and many, many miles since. I suspect the outside surface of the calipers does not get as hot as most think or imagine.
Strongly recommend what Thor said. To get rust converter to work I've found it very important to get the surfaces clean. Hot soapy water water first, rinse and dry, then degrease with brake cleaner, panel wipe or similar. Degreasing is important.

SMG · Aug 27, 2019

Awesome, thanks.

Hub parts / high temp paint & dinitrol - good or bad idea?

SMG

Member

Henry_b

Think outside, no box required.

Thor 1950

Well-Known Member

Al2O3

Well-Known Member

SMG

Member

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