Buggered 4 pot caliper
Turbo Mini Forums

I'm out of ideas now and I'm praying for help as I've got a brake piston refusing to budge from the caliper. None of them would come out under brake pressure so put the caliper on the workbench and put my air line in and 3 blew out but the 4th refuses to move. Heat hasnt worked. neither has a good WD40 soaking so any miracle ideas out there? Pleeeeease as I'm not going to spend money on another caliper that might have the same problem

Masturbation is not a crime its a hobby

Grease gun should move it, but you'll have to refit the other pistons and wedge them in place.

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1/4mile in 13.2sec @ 111 terminal on 15psi

Clamp the caliper tightly in a soft jawed vice, then use two pry bars or crow bars with the bends opposing each other it doesn't matter if you mark the inside of the piston as it never comes in contact with anything. Squeeze the bars together and wiggle and pull it out just dont twat yourself in the face when it comes free

Speeding is like masturbating, everyone does it, but not all of us film it and put it on the internet

[quote=fab,8th Oct, 2010]fuck off

I had exactly the same problem with my 4-pots.
This is how I finally got the last one out:


I put a thick piece of metal with a hole over the bits where the calliper halves connect.
Stuck the bolt through the hole, put a nut on it and pulled the piston out.
(but you do need to have acces to a welder)

Dazed and Confused....

I have a set of Metro 4-pots that came off a working car last year if you need them.

Metric is for people who can't do fractions.

ive got a rebuild set laying around gathering dust

How much do u want for them Alex? The pistons determined its staying in the caliper

Masturbation is not a crime its a hobby

No idea at all what they are worth.

PM me an offer (trusting you not to take the piss) and if I'm happy then it's a winner.

Metric is for people who can't do fractions.

I've pm'd u alex

Masturbation is not a crime its a hobby

like the grease gun idea

grease gun method is the only sensible way to put enough pressure on it in a controlled way..... use it all the time on the older land rovers with piston surface areas twice the size and hasn't failed yet....but then again there is always tomorrow.

Double-Blind experiment, N:
An experiment in which the Chief Researcher believes he is
Fooling both the subject and the lab assistant. Often accompanied by
a belief in the Tooth Fairy.

I tried the grease gun method and the piston still wouldn't shift. It's well and truly rusted in.

Masturbation is not a crime its a hobby