Snapped nipples (ooh,err missus etc).

[Colban]

The older Brembo calipers with the 6mm bleed nipples have a habit of seizing and snap off quite happily.
Does anyone have experience of tapping the bleed hole out to 8mm or 10mm successfully.
Is it feasible and is it safe?.Ta.

 

[dr nosh]

Without looking at the caliper on mine, I would be surprised if you could get an M8 thread in without mechanically weakening the alloy body, and M10, probably machine away most of the alloy body in trying this. Can you get M8 and M10 bleed nipples? Perhaps you can from trucks'r'us.

What diameter tubing were you thinking to the master cylinder, as that is threaded M6 for the union or banjo, so would need some adaptors to step the dia down.

 

[Bendy toy]

Forget the seized bleed nipple. Use a banjo bolt with built in nipple.

Soak the caliper in diesel for a week. full fat coke Cola is also supposed to work. Heat it to 100C in an oven to expand the alloy.

An Eazyout might then shift the broken bleed nipple.

Mineral oils swell the seals and you'll never get the pistons out if you don't first remove all rubber seals.