clutch line diameter and thread
 

Does anyone know what the hard line diameter for the clutch line is along with the thread size for the fitting on the end? I am looking to make up my own line and need to know what threads into the master cylinder.

Thanks

OD of the hard tube is 6mm and the male end fitting is 12mm...thread pitch must be 1.25 because it is more fine than either the 12mm 1.75 or 12mm 1.5 Irwin dies I tried.

I think I had found the thread to be a 12mmx1 even though the od on the threads only measure about 11.6 12 is the closest I can figure. I dont seem to be able to find this thread for a flare fitting anywhere. Does anyone have any advice on how to adapt this line from the master clutch cylinder to a -3AN fitting or JIC fitting?

Thanks

How about re-using the fitting from the original line? Cut the old line, remove the fitting, insert onto new line, flare new line with flaring tool.

jmd_forest