Radiator technical advice

[Mikekitts81]

I took my radiators of the bike while doing valve clearance checks they are a bit shabby and i would like to renew them or should i say make them look abit better so what are the processes of colouring radiators

do they spray them ?
Or atleast can they be sprayed

I assume that spraying them would be to much of a coat which would not be a good heat conductor to let it out am i right .

[Toe]

I've sprayed radiators with a single coat and no adverse effects.
The one on my Daytona 675 is black so pretty sure that's all that had on it originally before it flaked off.

[Richard Simpson Mark II]

Clean them (carefully) by all means, but more paint would be a bad idea.

It's not so much the extra insulation as the obstructed air passages that would be the problem caused by another coat of paint.

[Steve T]

I've spray painted many rads after they have been cleaned and never had an over-heating problems.
Admittedly they have all been on un-stressed engines that weren't tuned to the "nth" degree to gain extra power

Steve T

[paul_tim2000]

If a thin coat of paint is going to give you a problem then the corrosion caused by no paint will probably give you the same problem so I'd go ahead and give them a coat of matt black from a rattle can.

I wouldn't advise brush coating with hammerite however.