Paint come off radiator - touching up

Simian · Derestricted Danger Joined: 30 Jan 2019 Karma :

I have a Daytona 675 which has a glossy black radiator. I’ve just noticed there is some missing paint on the fins, leaving small whitish bits. There isn’t very much but I want to tidy it up.

Other than giving it a good clean and dry is there anything else I need to do in preparation? I just want to cover the white bits with a spray of black paint ideally.

Also, what is the likely cause of this? I didn’t notice any a couple of weeks back but rode it recently when there was salt on the roads, so could it be corrosion?

Thanks

Riejufixing · World Chat Champion Joined: 24 Jun 2018 Karma :

stinkwheel · Bovine Proctologist Joined: 12 Jul 2004 Karma :

Black engine enamel is good for this kind of thing.

If you want a satin finish, plastikote wood stove or BBQ paint is excellent providing you make sure you don't scuff it until it's had a few heat cycles.

The paint on radiators tends to bubble with corrosion then underrun, then a big flake falls off all at once looking like it's appeared from nowhere.
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Simian · Derestricted Danger Joined: 30 Jan 2019 Karma :

Thanks for the advice guys. I’ll touch it up this weekend then once dry I’ll cover the radiator in ACF50 to stop any further corrosion. I’ve got radiator and down pipes covers on the way so if I do a crap job at least it’ll be hidden.

MCN · Super Spammer Joined: 22 Jul 2015 Karma :

If you want paint to stick to aluminium you will need to acid etch it.

Halfords have all that shit if you get stuck.

Just slabbering more paint on may not be the solution.
The corrosion is under the paint so you may only have seen the tip of the iceberg. Shocked

It may hold it at bay until you can remove the rad and paint thoroughly.
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Disclaimer: The comments above may be predicted text and not necessarily the opinion of MCN.

Simian · Derestricted Danger Joined: 30 Jan 2019 Karma :

A100man · World Chat Champion Joined: 19 Aug 2013 Karma :

R1stu · Shrek! Joined: 12 Mar 2003 Karma :

I am doing something similar. I need to repair this, as the aluminum has delaminated from the bottom, and the fan mounts have snapped off.

https://i.imgur.com/JZzgcwd.jpg
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MCN · Super Spammer Joined: 22 Jul 2015 Karma :

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