Corsa B master cyclinder unions

[Mike]

Anyone have the foggyiest idea on the thread size/pitch of the two unions on a Corsa B master cycliner?

There definetly not M10. I would take mine out an measure them but I can actually get them out :(

[phazer]

It's hard to tell on EPC but it looks like they're M12s.

[Iain]

I'm sure I fitted two M10x1 fittings to my Corsa B setup - they must come in two different sizes then?

[phazer]

Well the Nova has two M10 and two M12. I suspect it's the same for the non ABS corsa. However the EPC listings are as clear as mud for the corsa. On one page it looks like M10, the others it's all M12 at the cylinder.

[mowgli]

according to this girling catalogue link (http://outcat-cs.tecdoc.net/ows/en/473EA337581174C8DF44B913303D3E94.ows_cs1.srv;jsess ionid=473EA337581174C8DF44B913303D3E94.ows_cs1?vie w=VIndexFramesetJsp), they are m12x1, i think....

[Mike]

^My suspicion is there M12's, there blantantly bigger then a male M10 fitting thats for sure.