Yep! Precisely. I get a small window of time to get all three patches done at my place. 40 year old motor misbehaviour - I just can't accommodate the time for at the moment.

Don't worry too much about the calipers (unless you really want them). Do you have 5/8 and 3/4 open ended spanners? Stick them over the engine shaft, that should give you a pretty clear indication of what you have. Or you could measure the hole on the engine side clutch half, and do your conversion - close to 16mm is 5/8.

and 19mm is 3/4

Last edited by Bonnar_Bloke; 26/01/19 12:10 AM. Reason: added info