Brake drum paint

Post by **les** » Sun Nov 16, 2008 5:18 pm

How hot would brake drums run under normal circumstances, in degrees C does anyone know please?

Post by **bmcecosse** » Sun Nov 16, 2008 5:21 pm

At very worst - they may glow dull red! Which appears to be ~ 600 C . Certainly get too hot to touch very quickly.

Post by **les** » Sun Nov 16, 2008 5:36 pm

Hotter than the exhaust then!

Post by **plastic_orange** » Sun Nov 16, 2008 6:51 pm

I've used black 2k without any bother.

Pete

Post by **bmcecosse** » Sun Nov 16, 2008 7:08 pm

Exhaust can glow bright red!
But dull red brake drums will be an extreme case - rarely get above ~ 200 C ? in normal use.

Post by **les** » Sun Nov 16, 2008 7:18 pm

The paint I had in mind is rated to 150c. Perhaps I'll research more.

Post by **jonathon** » Sun Nov 16, 2008 7:31 pm

plastic_orange wrote:I've used black 2k without any bother.

Pete

Ditto, and on rocker covers (not Minor) also good on axles and most suspension components.

Post by **rayofleamington** » Sun Nov 16, 2008 8:20 pm

If brake linings are similar to clutch linings (they contain much of the same elements) they will fade above 250° to 300°C and start to burn at above 350°C

Post by **les** » Sun Nov 16, 2008 9:13 pm

Can 2k (2 pack?) be painted on by hand?

Post by **MGFmad** » Sun Nov 16, 2008 9:16 pm

les wrote:Can 2k (2 pack?) be painted on by hand?

Yes, you won't get as smooth a finish but it doesn't matter on brake drums.

Post by **bmcecosse** » Sun Nov 16, 2008 9:17 pm

I believe so - and little health risk because no spray to inhale. Wear rubber gloves though - Pink Marigolds are highly recommended.

Post by **plastic_orange** » Mon Nov 17, 2008 7:35 pm

I used a brush - hate getting paint on my hands, but on the plus side - no brush marks if you use your hand

Seriously, you get a really good finish with 2k brushed on - you won't see any brush marks on your drums. I did my son's corsa years ago, calipers too, and it stood up really well - better than original finish (wouldn't be hard).

Pete

Post by **les** » Mon Nov 17, 2008 10:33 pm

At the risk of labouring the point, has anyone the time to tell me what to buy and how to mix etc. I hear things about base coat hardener and laquer, sorry but 2 pack is still a mystery to me!

Post by **bmcecosse** » Mon Nov 17, 2008 10:44 pm

See dustyfog sticky. But I think you would need to buy quite a large quantity of the stuff - not going to be inexpensive!

Post by **plastic_orange** » Mon Nov 17, 2008 10:47 pm

Buy a litre - enough to do loads of bits - get hardener at same time and mix 2 parts paint to 1 of hardener. Only mix as much as you need - it goes a long way.
Shouldn't cost more than £25.
Of course, you could just use black smoothrite - will do the same job on drums.

Pete

Post by **bmcecosse** » Mon Nov 17, 2008 10:50 pm

Yep - i've used red smoothrite in the past - it did discolour a bit with the heat - but seemed to hang on ok. Of course Hellfrauds etc will happily sell you a rattle can of 'high temperature' paint.

Post by **jonali** » Thu Nov 20, 2008 6:44 pm

Have just done mine with aluminium paint

It claims heat proof but I mostly used it cause I had a tin.

Will it last?

J

Post by **alainmoran** » Thu Nov 20, 2008 7:34 pm

I was going to use black stove paint for painting my exhaust & brake drums, I figure it will be a thin enough layer that it wont insulate, it shoudl stand up to the temperator and in theory black surfaces radiate heat better than white ones. (although this is hotly depated - pun not intended)

Post by **twincamman** » Wed Dec 10, 2008 11:13 am

I found that Hammerite melted on the front drums. If you use a paint designed for exhaust manifolds, you should be OK.

Post by **mrmorrisminor** » Wed Dec 10, 2008 9:02 pm

I use high temp hearth/bbq paint, get it in virtually any diy place.... seems to do the job....