Tokico 4 pot callipers, got them mostly apart.

[Guest Richzx6r]

I'm sure the normal paint will be ok I dont think the calipers get all that hot as they are in the wind blast all the time and they arent in direct contact with say the brake disc though some residual heat may leach to them from the pads but I wouldnt think they get too hot for normal paint

[Guest Richzx6r]

Halfords does not have DOT 3 break fluid, a quick google says dot 4 is compatible. Any advice?

 

Dot 4 is fine

[James in Brum]

Thanks, waiting for Halfords to text to say come and get your stuff. Will try to do a good job this time around so will paint.

[Ian Frog]

I have used normal satin black spray on calipers multiple times and even gold spray paint on some.

As [mention]Richzx6r[/mention] rightly says there is a small amount of residual heat transfer but not enough to worry about.

Cheers

Ian

[James in Brum]

As always thank you for your input and support

[Guest Richzx6r]

As always thank you for your input and support

 

It's no problem mate always happy to help with whatever I can

[Ian Frog]

[James in Brum]

Where do I and don’t I paint? Can I stuck some bog role in the cylinders and just let rip all over or really no James don’t do that?

 

[James in Brum]

Outsides done

 

[Mickly]

Outsides done

A0DE74F6-3B6A-4E7E-9E80-64D1AED63465.jpeg

 

Bugger, a bit late, but I’ve got some gold caliper paint ( brush on ) you could have a a dip of, loads left after doing mine & you’re not that far away.

Let me know if you’d like a bit of bling

[James in Brum]

Thanks [mention]Mickly[/mention]

Do I only paint the outside of the callipers or is inside okay to paint if I cover the cylinders and where the fluid pumps between sides?

[James in Brum]

Going to press on

[Mr Fro]

Dude, you don't want to paint the mating surfaces where the calipers bolt together!

[James in Brum]

Okay I’ll take that paint off [embarrassed smiley] thank fully only did a couple of halves.

Out of curiosity why not?

[Ian Frog]

Okay I’ll take that paint off [embarrassed smiley] thank fully only did a couple of halves.

Out of curiosity why not?

 

Consider the pressure fluid is under as it acts on the rear of those pistons that you now know how hard they are to move.

Now think about those mating surfaces and where the fluid will go.

I am not taking the P just enjoying your learning curve and we will get there I assure you.

Cheers

Ian

[James in Brum]

I don’t feel criticised or ought

Very happy to be told where I f**k up

Should there be a gasket of

Some sorts between them then? It seemd like it was just metal on metal and the fluid communicates through the little holes where there is a rubber seal.

My (I now know but don’t understand) logic was that the inner part apart from the little holes that have a rubber washer between them and the cylinders were just carcass and not doing much.

Happy being told what best to do, it would be ace to understand as well.

[James in Brum]

Does the fluid not only push against the back of the pistons?

[Ian Frog]

You had it there yourself.

Those seals rely on the mating faces fitting nice 8tight and level to do the sealing.

The paint potentially makes this not possible.

Nice flat surfaces to gently rub down and clean ready for more service.

Cheers

Ian

[James in Brum]

Gotcha

I’ve cleaned the paint off the bits that touch

[Ian Frog]

You will be fine I am sure.

You have the sense to ask first and learn when you get it wrong.

I wish I had been able to learn that lesson when I was younger lol.

At 20 I knew it all ha ha.

Cheers

Ian

Oh still learning by the way!

[TimR]

And remember when you bleed or rebuild the calipers not to spill any brake and clutch fluid on the paintwork as it will be in vain

[Mr Fro]

Gotcha

I’ve cleaned the paint off the bits that touch

 

You don't need to go crazy with it i.e. attacking it with sandpaper - you might be able to rub the paint off now before it dries with a bit of thinners if you have any.

[Mickly]

And remember when you bleed or rebuild the calipers not to spill any brake and clutch fluid on the paintwork as it will be in vain

 

That’s why specific caliper paint is preferable, it’s brake fluid resistant.

[James in Brum]

I hope to rebuild later when I am not required to parent.

I will have to learn how to bleed them tomorrow.

I think Tuesday is going to be carbs day now.

[Mr Fro]

That’s why specific caliper paint is preferable, it’s brake fluid resistant.

 

Is it? I thought it was resistant to brake dust.

Good to know if it's fluid resistant too!