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Painting new disks
- Silverzedtom
- Senior Member
- Posts: 1478
- Joined: Sun Jan 15, 2017 8:19 pm
- Location: East Sussex
Painting new disks
Just had new disks and pads arrive and want to paint the disks to prevent the rust.
Question is should I spray the inside of the hat’s or leave them as they are? My concern is the handbrake shoes on the rear’s.
The second concern is the mating surfaces. I wasn’t going to spray the faces but can’t make up my mind. They will have a couple of weeks to dry before they are mounted however this might mean the surfaces are no longer perfectly uniform.
Hopefully you’re all going to tell me to spray the lot as it’s easier
Any thoughts appreciated
Question is should I spray the inside of the hat’s or leave them as they are? My concern is the handbrake shoes on the rear’s.
The second concern is the mating surfaces. I wasn’t going to spray the faces but can’t make up my mind. They will have a couple of weeks to dry before they are mounted however this might mean the surfaces are no longer perfectly uniform.
Hopefully you’re all going to tell me to spray the lot as it’s easier
Any thoughts appreciated
E85 2.5si
F55 Cooper S
F55 Cooper S
- Smartbear
- Lifer
- Posts: 13685
- Joined: Wed Feb 05, 2014 6:54 pm
- Location: a barn in Somerset
Painting new disks
Hi, I wouldn’t spray inside the drum where the shoes live-leave that bare metal.
I’ve sprayed the outside part that contacts the wheel and had no issues, it’s only a thin coating & soft enough for the wheel to pull up squarely with the torquing of the wheel bolts
Rob
I’ve sprayed the outside part that contacts the wheel and had no issues, it’s only a thin coating & soft enough for the wheel to pull up squarely with the torquing of the wheel bolts
Rob
e89 Sdrive 20i, plenty of mumbo & good economy-the thinking bears z4
e89 Sdrive 30i, this ones busted, pass me another...
e85 3.0si sold
- Silverzedtom
- Senior Member
- Posts: 1478
- Joined: Sun Jan 15, 2017 8:19 pm
- Location: East Sussex
Painting new disks
Cheers Rob. Thought that would be the case Re shoes. Looks like I’ve sorted out my plans for tomorrow morning.
E85 2.5si
F55 Cooper S
F55 Cooper S
- patriot66
- Lifer
- Posts: 3467
- Joined: Sun Jan 11, 2015 2:59 am
- Location: Mawdesley, Lancashire
Painting new disks
I never paint the face that the wheel mates up to. A very thin coat of Coppaslip prevents corrosion and the wheel adhering.
Sterling Grey '03 2.5i SE / Infinitas Supercharger / S.M.G / Hardtop / Gloss Black 162s / Bilstein B4s / 3.0i Brakes / DLV De-Cat & Silencer / Rebuilt VANOS / Sonar 2Xcite Lights / Carbon & Alcantara Trim / M-Sport Seats / ...& Side Covers !
- cj10jeeper
- Lifer
- Posts: 17846
- Joined: Fri Jun 22, 2007 11:50 am
- Location: Lichfield, England
Painting new disks
Agreed - never paint mating faces.
Jaguar F-Type 3.0 Supercharged V6 S, Stratus Grey, LSD, Active Exhaust, CF wheels, Performance brakes, Sports seats and mods ongoing
Gone but not forgotten Z4 3.0i SE Roadster ///M front, Red ///M leather seats, Aero sills
Gone but not forgotten Z4 3.0i SE Roadster ///M front, Red ///M leather seats, Aero sills
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- Member
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Painting new disks
I am a little confused about the not painting the mating surface, i understand the risk of uneven coating resulting in miss-alignment, but if this is a real issue then what about the paint applied to the inner face of the wheels, which are subsequently bolted up against the face of the disc mounting surface. ?????
When I refurbished my discs I did not paint the mounting face, however I would like to as the disc mounting diameter is about 30 to 40mm more than the wheels mounting face, hence an annulas that has gone rusty
When I refurbished my discs I did not paint the mounting face, however I would like to as the disc mounting diameter is about 30 to 40mm more than the wheels mounting face, hence an annulas that has gone rusty
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OnlineUsel
- Member
- Posts: 815
- Joined: Thu Feb 27, 2014 7:59 am
Painting new disks
The original paint on the discs will probably have been baked so its throughly dry or hardened. The paint you use even when dry will still be soft. When you put the wheel back on the disc could stick to the wheel. Think of when painting wooden windows or maybe doors. When dry you shut them and when you next open them they stick and need an impact force to open.
This could happen to your wheels and won't be fun if it happens.
This could happen to your wheels and won't be fun if it happens.
- cj10jeeper
- Lifer
- Posts: 17846
- Joined: Fri Jun 22, 2007 11:50 am
- Location: Lichfield, England
Painting new disks
Simply speaking the chances of you painting the mating surfaces and getting a flat surface are close to nil. Contaminants, blobs of paint, runs, etc will make the wheel out of true
Do it and it may get away with it, but I keep mating surface 100% clean and flat
Do it and it may get away with it, but I keep mating surface 100% clean and flat
Jaguar F-Type 3.0 Supercharged V6 S, Stratus Grey, LSD, Active Exhaust, CF wheels, Performance brakes, Sports seats and mods ongoing
Gone but not forgotten Z4 3.0i SE Roadster ///M front, Red ///M leather seats, Aero sills
Gone but not forgotten Z4 3.0i SE Roadster ///M front, Red ///M leather seats, Aero sills
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- Member
- Posts: 396
- Joined: Sun Feb 13, 2011 6:40 pm
- Location: chesterfield
Painting new disks
Just spray the disc face and hub part with zinc etch primer, super smooth Finnish and will stay rust free for years.
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- Nictrix
- Lifer
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- Location: Paisley
Painting new disks
Do you take the paint of the surface of the disc the pads run on before installing or let the pads take the paint off contaminating the new pads with paint on the first rotation of the wheels?mr nurburgring wrote: ↑Sun Jan 14, 2018 5:22 pmJust spray the disc face and hub part with zinc etch primer, super smooth Finnish and will stay rust free for years.
When I painted mine I masked off the pad area and only painted the part the pads dont run on.
E89 2014 35i M Sport Black with Black leather
- Smartbear
- Lifer
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- Joined: Wed Feb 05, 2014 6:54 pm
- Location: a barn in Somerset
Painting new disks
I don’t think the paint would harm the pads, it’s not like oil which could soak in & contaminate them-a couple of brake applications and it’s goneNictrix wrote: ↑Sun Jan 14, 2018 6:06 pmDo you take the paint of the surface of the disc the pads run on before installing or let the pads take the paint off contaminating the new pads with paint on the first rotation of the wheels?mr nurburgring wrote: ↑Sun Jan 14, 2018 5:22 pmJust spray the disc face and hub part with zinc etch primer, super smooth Finnish and will stay rust free for years.
When I painted mine I masked off the pad area and only painted the part the pads dont run on.
Rob
e89 Sdrive 20i, plenty of mumbo & good economy-the thinking bears z4
e89 Sdrive 30i, this ones busted, pass me another...
e85 3.0si sold
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- Member
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- Joined: Sun Feb 13, 2011 6:40 pm
- Location: chesterfield
Painting new disks
It’s only a thin coat, just let the pads rub it off. It turns into dust and disappears leaving a nice edge.