Ap caliper bleed screw sheared off...

[m3jappa]

A bleed screw on my Tuscan brake caliper has sheared off.

I have tried an easy out with no success as its so tight in there wd 40 and loads of heat didnt budge it, I then tried one of the easy out type drill bits however the bleed screw is so soft it's just eaten away at it leaving about 2mm or so before I hit the actual thread itself. So I'm now scared what to do next as obviously don't want to damage the thread.

So what next? The car will be getting serviced in a couple of weeks so could ask them to do it but I'd rather do it myself.

Any ideas?

[DJR 7]

How about a tap and die? It's that or a helicoil.
Good luck, I think a tap should do it.
D

[Guillotine]

They can be replaced, but have to be sent away.
Happens on our race Tuscans.
They drill them out completely and replace with a bigger stronger one.

Can't do the old nipples as they never seal afterwards. The mating edges always get damaged.

Ask Col at www.tvrssw.com he's replaced all of mine.
Daren't have anything that might fail at the track so they are all done.

cheers
Andy

[m3jappa]

Well it's going to str8 6 soon so might have to get them to do it, should I specify what you say, for obvious reasons I don't want them failing....

[Guillotine]

Have a chat with Jason, he knows what he's doing.

Cheers

[nawarne]

m3jappa said:

Well it's going to str8 6 soon so might have to get them to do it, should I specify what you say, for obvious reasons I don't want them failing....

Jason had his Tuscan out at Silverstone a few weeks ago.

He's probably done the mod that Andy has referenced.
Nick

[m3jappa]

Haha got the bd out!

Plenty of wd40 then some heat and then lightly tapping a torx socket in there got it out . Feels good when you DIY

So what bleed nipples do I need?

It appears its the cp3720-173 m10 1mmx 30mm for what I think is the cp5200 caliper


Oh and does anyone know what the rear bleed nipples are? Searching for cosworth rear bleed screw brings up nothing.

Might as well replace the lot tbh.

[Guillotine]

well done
chances are you still balls up either the thread, sealing face...or both.

When you've bled then, clean them down with a degreaseant then stand on the pedal for a minute or so to test.

They dont "GO", they weep.

Good Luck!
A

[m3jappa]

It seems ok as they thread back in nicely. Obv don't know if they weep yet though, I don't think there's any damage....

Any ideas on the screws?