cleaning dust and rust from drilled discs?

DynoMike said:

I've just bought a Big Boi blower from Ultimate Finish in Kent. Took it out of the box and noticed it came with a small nozzle adaptor, so put it on max speed and tried it on the discs, success!! It blew all of the crud clean out of the holes but showered me in clouds of brake dust at the same time :grin:

The discs were bone dry, I doubt this would happen if they were wet. The blower is 3kw, so close to 4 hp, and is intended to be a car dryer. I was staggered that it cleaned the disc holes out. It also blew a ton of crud out of my radiator vents, so happy days.

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infrasilver said:

I remember some years ago when I used to read up on the technical way cars work, IIRC there is a very thin build up of gasses between the pad and the disc, similar to when driving in the heavy rain, the whole tread is never in full contact with the tarmac.

The drilled vent holes allow the pad to fully press on the disc and the gas to vent where non drilled don't. I always check the holes before a track day or high alpine road trip as this will stop brake fade and keep the brakes cooler.

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wasz said:

I expect grooved discs would do the same and no faff with drill bits or big boys blowers...

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abcarrera said:

DynoMike said:

I've just bought a Big Boi blower from Ultimate Finish in Kent. Took it out of the box and noticed it came with a small nozzle adaptor, so put it on max speed and tried it on the discs, success!! It blew all of the crud clean out of the holes but showered me in clouds of brake dust at the same time :grin:

The discs were bone dry, I doubt this would happen if they were wet. The blower is 3kw, so close to 4 hp, and is intended to be a car dryer. I was staggered that it cleaned the disc holes out. It also blew a ton of crud out of my radiator vents, so happy days.

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Thanks for your input! That blower sounds the dogs danglies! I have this image of the F1 pit stops with the air guns blowing brake dust everywhere.
It must be powerful if it clears out those holes, I did a few with the wheel on and it was taking a little bit of effort to push the dust through, plus to do it properly will be wheels off as I have a set of Fuchs on my car so not a great deal of disc is seen anyway.
I had thought about a blower for drying y cars when they washed but never justified to myself when monster size microfibre towels are at hand, but ow maybe with a secondary use I can justify it now, if you don't mind me asking is the blower expensive? Ave you used it for drying your car? Does it work well?
Thanks again :bye:

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DynoMike said:

abcarrera said:

DynoMike said:

I've just bought a Big Boi blower from Ultimate Finish in Kent. Took it out of the box and noticed it came with a small nozzle adaptor, so put it on max speed and tried it on the discs, success!! It blew all of the crud clean out of the holes but showered me in clouds of brake dust at the same time :grin:

The discs were bone dry, I doubt this would happen if they were wet. The blower is 3kw, so close to 4 hp, and is intended to be a car dryer. I was staggered that it cleaned the disc holes out. It also blew a ton of crud out of my radiator vents, so happy days.

Click to expand...

Thanks for your input! That blower sounds the dogs danglies! I have this image of the F1 pit stops with the air guns blowing brake dust everywhere.
It must be powerful if it clears out those holes, I did a few with the wheel on and it was taking a little bit of effort to push the dust through, plus to do it properly will be wheels off as I have a set of Fuchs on my car so not a great deal of disc is seen anyway.
I had thought about a blower for drying y cars when they washed but never justified to myself when monster size microfibre towels are at hand, but ow maybe with a secondary use I can justify it now, if you don't mind me asking is the blower expensive? Ave you used it for drying your car? Does it work well?
Thanks again :bye:

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Haven't managed to use it to dry the car yet but hope to very soon. Personally, I would imagine a large microfibre would be more efficient. I bought this because of my physical situation, which makes it difficult to reach some areas of the car to properly dry it.

But one area of washing had always bugged me - the discs going rusty. I think that this blower will stop that. It was around £150, I had a 10% discount via one of their many special offers. The fact that it blew all of the dust out of the holes was a nice bonus.

In terms of brakes, all one piece discs will judder under heavy braking, but then return to normal after cooling down. So the best thing to do is get more cooling on the car, change the fluid for Castrol SRF and get some better pads. I strongly recommend contacting Nick at Uber9s. Also known as Nxi20 on here, as he is a brake specialist for 911s.

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