Can anyone tell me the thread size of the sump drain plug on the 1725 Series V Rapier?
Clive is fitting a "Quickvalve" on his TR this Winter and reckons it would be a good idea on my Sunbeam. We need the correct sizing to order the appropriate "Quickvalve", without having to drain the oil (as I am still getting out and about in my "pride and joy").
The only time I use mine is to look up stuff for people on the forum. I don't have a Series Rapier and never have had. You could have mine but will have to take over the "looking up stuff" duties for the forum