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[tango]

So my brake calliper started leaking
I ordered a new one from euro car parts
But it’s the wrong size and they’re Only got the one type
Any suggestions where i can get one from
Tia

[biggriffin]

V6,, or early 2.0

I've got a pair of V6, need a clean, £40, depends on the weight to dispatch them. So I might be able to include postages.

[tango]

V6
Just need the drivers side tbh

[Doctor Gollum]

V6
Just need the drivers side tbh

Engine size... 🤔

Vented ones aren't available new.

[tango]

2.6
Solid discs
Calliper has no.42 on it
The one I bought from euro had 40 stamped on it

[VXL V6]

2.6 should be vented discs and a caliper stamped 42 is for vented.

[biggriffin]

I'm assuming the op wants fronts... I have no rears, which on a 2.6 should be vented.

[Doctor Gollum]

2.6
Solid discs
Calliper has no.42 on it
The one I bought from euro had 40 stamped on it

Number is piston diameter. 42 is the correct one for your car.

You need to be 100% clear that the discs currently fitted are solid. I would wager that your caliper 'leak' is because the pistons have come out too far because the wrong discs are fitted.

You have two choices... These are either/or, and nothing else.

1. Keep your current calipers, and immediately* fit the correct 286x20mm VENTED discs with new pads.

Or

2. Immediately* obtain a second '40' caliper from Eurocraparts and fit to your currently fitted 'SOLID' 286x12mm discs, ideally with new pads.

*Immediately means. DO NOT drive the car until you have done either option. Ignoring this point could easy involve DEATH WHEN, not if, the brakes fail completely as all the fluid comes out

[tango]

I need rear
have solid discs on the rear

[YZ250]

OP wants rear drivers side.    A slight mis-spelling in the title may have confused things. 

If the rear caliper is for vented discs and it is wearing solid discs, won't the OP be at risk of a bigger leak if the piston falls out. 

[Doctor Gollum]

I need rear
have solid discs on the rear

2.6
Solid discs
Calliper has no.42 on it
The one I bought from euro had 40 stamped on it

Number is piston diameter. 42 is the correct one for your car.

You need to be 100% clear that the discs currently fitted are solid. I would wager that your caliper 'leak' is because the pistons have come out too far because the wrong discs are fitted.

You have two choices... These are either/or, and nothing else.

1. Keep your current calipers, and immediately* fit the correct 286x20mm VENTED discs with new pads.

Or

2. Immediately* obtain a second '40' caliper from Eurocraparts and fit to your currently fitted 'SOLID' 286x12mm discs, ideally with new pads.

*Immediately means. DO NOT drive the car until you have done either option. Ignoring this point could easy involve DEATH WHEN, not if, the brakes fail completely as all the fluid comes out

[Enceladus]

OP wants rear drivers side.    A slight mis-spelling in the title may have confused things. 

If the rear caliper is for vented discs and it is wearing solid discs, won't the OP be at risk of a bigger leak if the piston falls out. 

That's probably why it's now leaking. Bit of wear on the pads and the pistons are pushed out too far. And the other side will follow shortly.
The caliper is stamped 42mm so it's for vented discs. The discs need to be changed for vented on both sides, before the car is driven.

Is there a repair kit available for 42mm vented rear caiipers?

[Doctor Gollum]

OP wants rear drivers side.    A slight mis-spelling in the title may have confused things. 

If the rear caliper is for vented discs and it is wearing solid discs, won't the OP be at risk of a bigger leak if the piston falls out. 

Exactly, hence the repetition, as it's a point that needs hammering home to anyone who thinks fitting solid discs to vented calipers.

2.6
Solid discs
Calliper has no.42 on it
The one I bought from euro had 40 stamped on it

Number is piston diameter. 42 is the correct one for your car.

You need to be 100% clear that the discs currently fitted are solid. I would wager that your caliper 'leak' is because the pistons have come out too far because the wrong discs are fitted.

You have two choices... These are either/or, and nothing else.

1. Keep your current calipers, and immediately* fit the correct 286x20mm VENTED discs with new pads.

Or

2. Immediately* obtain a second '40' caliper from Eurocraparts and fit to your currently fitted 'SOLID' 286x12mm discs, ideally with new pads.

*Immediately means. DO NOT drive the car until you have done either option. Ignoring this point could easy involve DEATH WHEN, not if, the brakes fail completely as all the fluid comes out

[VXL V6]

OP wants rear drivers side.    A slight mis-spelling in the title may have confused things. 

If the rear caliper is for vented discs and it is wearing solid discs, won't the OP be at risk of a bigger leak if the piston falls out. 

Exactly that, the rear caliper is stamped 42 which is a caliper for a vented disc (all 3 of my 3.2's have rear calipers with 42 stamped on them), all 2.6 and 3.2 had vented discs front and rear, therefore, at some point the wrong discs are currently fitted as far as I can see.

[tango]

Ok
So looks like previous owner has put in wrong discs

[Enceladus]

Have you removed the leaking caliper? Seals for 42mm are available, so if the bores aren't scratched and the pistons are undamaged it should be possible to overhaul your unit.

You might even be able to get seals at a local motor factors as 42mm ATE are used on numerous Mercs and other makes. The seals for the piston are the same albeit the caliper might be different. The GM Vauxhall seal kit part # is 9095057 but I doubt if they are available. Maybe on a special order from Germany.

[tango]

Could i be lucky and push the pistons back in
Fit new vented discs and good to go
Or is the calliper damaged and seals have to be changed

[Enceladus]

Could i be lucky and push the pistons back in
Fit new vented discs and good to go
Or is the calliper damaged and seals have to be changed

I don't know, but I suppose you could be lucky, if you are careful about how you retract the pistons. They only real way to tell is to remove the caliper, push out the pistons carefully with compressed air and inspect for damage. If the bores are scratched then it's scrap. If not, then new seals should fix it. Since the pistons are out you might as well replace the seals. You're going to have to unbolt the calipers in any event to replace the discs. Completely removing the caliper from the car is not much extra work. And you were also going to have to top-up and bleed the brakes no matter what you do.

Whatever you do don't drive the car as it's in a dangerous condition.

[Doctor Gollum]

Could i be lucky and push the pistons back in
Fit new vented discs and good to go
Or is the calliper damaged and seals have to be changed

Visual inspection will soon confirm, but that's about the size of it

Just be sure to push the piston in square

And definitely don't drive it until you have fixed it one way or tother.

[biggriffin]

Don't panic...

Repair kits available from http://biggred.co.uk/

Then buy a pair of vented rear discs.

[Enceladus]

Have you removed the leaking caliper? Seals for 42mm are available, so if the bores aren't scratched and the pistons are undamaged it should be possible to overhaul your unit.

You might even be able to get seals at a local motor factors as 42mm ATE are used on numerous Mercs and other makes. The seals for the piston are the same albeit the caliper might be different. The GM Vauxhall seal kit part # is 9095057 but I doubt if they are available. Maybe on a special order from Germany.

Apologies for the typo in my earlier post. GM seal kit for 42mm ATE is # 9195057. So you're looking for that or a third party equivalent.

And I really don't understand how anybody could remove a pair of 20mm vented discs and then not notice that the replacements he was installing are 12mm thick and solid. Shouldn't be allowed near brakes.

[Doctor Gollum]

Solid discs are literally half the price

Not the first time this has happened, and unfortunately it won't be the last.

[Andy B]

.....
And I really don't understand how anybody could remove a pair of 20mm vented discs and then not notice that the replacements he was installing are 12mm thick and solid. Shouldn't be allowed near brakes.

Likewise but so called professional garages have done it too ...

[YZ250]

On the plus side, the OP has found out before anyone got hurt.    A new pair of vented rear discs and pads and hopefully you're sorted, so it was definitely worth mentioning it on here.   

[tango]

Thanks everyone
I’ll inspect the calliper and will Change the discs and pads on both sides while im at it