Toyota Yaris - Am I okay to bake my brake drums?

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Mon 20 Jul 2015 18:11
Toyota Yaris - Am I okay to bake my brake drums? - Xrat

My brake drums were rusty. Having cleaned them and sprayed them with heat resistant paint, am I okay to follow the paint instructions to harden the paint by baking at 160 degrees, or will that warp the drums?

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Mon 20 Jul 2015 19:27
Toyota Yaris - Am I okay to bake my brake drums? - galileo

My brake drums were rusty. Having cleaned them and sprayed them with heat resistant paint, am I okay to follow the paint instructions to harden the paint by baking at 160 degrees, or will that warp the drums?

If the castings were stress-relieved before machining, they probably will not warp from being baked at 160 (presume 160 C).

(Temperatures for stress relieving cast iron would be at least 260 C)

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Mon 20 Jul 2015 20:07
Toyota Yaris - Am I okay to bake my brake drums? - Xrat

Thank you.

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Wed 22 Jul 2015 20:39
Toyota Yaris - Am I okay to bake my brake drums? - Xrat

For the information of anyone thinking of doing the same..,

The heat resistant spray-paint I used (according to the can) is good to 800 degrees C. I followed the advice on the can, several thin coats, allow to dry between coats... Then put the drums in the barbeque with the lid closed, raised the temperature and left the paint to 'harden' for an hour at 160 C. I then swithched it off and allowed the drums to cool slowly.

I am pleased to say there was no adverse effect on the drums, they are still circular!

Many thanks Galileo.

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Wed 22 Jul 2015 20:46
Toyota Yaris - Am I okay to bake my brake drums? - gordonbennet

Well done, this place is getting its eccentricity back, barbecued indeed..:-)

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Mon 20 Jul 2015 19:30
Toyota Yaris - Am I okay to bake my brake drums? - gordonbennet

When i was a poor wee lad without tuppence to his name* i couldn't afford new drums or brake shoes when the oil seals went on my Hillman Super Minx rear axle and soaked everything in oil...so a liberal dosing of petrol was applied and the whole lot set on fire (drums and shoes in a grate, silly, not still on the car), worked a treat with no ill effects.

Does it reall need baking on?, wouldn't the heat of use do the trick, i've painted dozens of calipers and drums with ordinary Hammerite and it's lasted donkeys years longer than the microscropic layer of the worlds thinnest utterly useless paint they were threatened with at the factory.

*As against an old soak still stony broke

Edited by gordonbennet on 20/07/2015 at 19:32

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Mon 20 Jul 2015 20:17
Toyota Yaris - Am I okay to bake my brake drums? - Xrat

Yes,

Of course I have a can of Hammerite that would have done the job free.., had I read the forum and seen that hammerite does the job. But of course seeing the can of heat resistant paint, whilst waiting for the alloys to be powder coated, it reminded me to do the job...,

Doh!

(Heat from use? You haven't seen my missus drive! It was a surprise to find brake dust in there.)

Thanks anyway.

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Mon 20 Jul 2015 21:19
Toyota Yaris - Am I okay to bake my brake drums? - gordonbennet

Your wife the long lost sister that SWMBO often wondered if?

Greek?

If so that confirms it, two pedals on the car, one is nailed to the floor followed swiftly by the other to counteract.

Luckily she doesn't read this forum, which is just as well cos she's got the typical Latin 0.00001amp fuse fitted..:-)

I'm kinda glad i'm not the only one who gets it a bit wrong, so just to put your paint choice into perspective....had a leak from an aircon pipe on my Landcruiser...ho ho thats an easy change, i'll put a new pipe on...grill off, into garage find spanners, weired sizes, into garage find mehoosive adjustables, blimey thats tight, no its free, no it isn't its stripped the threads...on the next section of pipe of course.

Onto the other side, thats even tighter, headlight out for more elbow room, still tight, no its free i'm still winning, no i'm not its split the pipe in two...the next section of pipe of course which right through into the bulkhead.

Off round to aircon man who luckily has boxes and boxes of special fittings for idiots who think undoing 15 year old alloy pipes is going to be a doddle.

Edited by gordonbennet on 20/07/2015 at 21:20

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Mon 20 Jul 2015 22:36
Toyota Yaris - Am I okay to bake my brake drums? - Xrat

Yes I had a 17 year old Espace with aircon issues, fortunately it had electric windows too!

5 years later (last week in fact) a nice man came and solved the problem..., by picking it up with a crane on the back of his truck and leaving me a space on the drive.

I have a nice new aircon now, I even polish the outside of it!

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Tue 21 Jul 2015 17:51
Toyota Yaris - Am I okay to bake my brake drums? - jc2

I can remember years ago boiling my brakeshoes in detergent to get the oil out!

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Tue 21 Jul 2015 19:15
Toyota Yaris - Am I okay to bake my brake drums? - madf

My 1947 Rover 16 had drum brake front and rear. Coming down a long mountain road in Scotland - about 1 in 4 and 1 mile long, the brakes overheated and smoke rose from all the drums.. I had painted them with black hammerite 12 months or so before.

At the bottom I managed to stop - with brake fade .. and the drums were glowing red. The brake system was ok - the brake fluid did not boil. There was none: it had rod operated brakes. :-)

I had to repaint the drums again...

Edited by madf on 21/07/2015 at 19:16

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