Thread pitch of Clutch Master Cylinder Activation Rod Standing Pedals

Started by chopperpat, May 29, 2016, 07:10:35 AM

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chopperpat

Whilst replacing the Clutch Master Cylinder in my 1974 Junior, the Clutch Master Cylinder Activation Rod has snapped off flush to the end of the steel tube.  Can anyone please confirm that the thread pitch is indeed M9 x 1.25?  :(
74 GT Junior
1954 Austin Healey 100
1971 Valiant Charger RT E49 replica

Paul Byrne

G'day, Tricky one I think..
Measured my 2L rod thread. Got approx 9mm diam but 1.37 mm pitch. Checked UNF and UNC but they are 9.5mm (3/8") and pitch falls both sides of the measured value by quite a margin. So best approximation is 9mm x 1.5mm metric
Good luck with finding a suitable screw or die. I think I would be looking at tapping it out to 10mm.
74 GTV 2000 tarmac rally
75 Spider
EX 51 Jowett Jupiter