Morris Minor Owners Club

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

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

Hotter than the exhaust then!

I've used black 2k without any bother.

Pete

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

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

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.

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

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

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.

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

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

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!

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

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

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.

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

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)

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

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