I am not happy with how the leather on my gear lever has turned out. Cleaned it a couple of times but after a short time it feels sticky again. So I decided to make a new one. Grabbed a piece of firewood and turned it down to a round shape
Then started to make a brass insert.
Very nearly drilled and tapped it M8 but then decided that didn’t look quite right. Turns out the thread on the MANUAL cars is not M8 as it is on the automatics. This poses two questions:
a) Why the … did they do this?
b) What exactly is it? It’s not M8 x 1.5, but close to 8mm diameter and close to 1.5 pitch. So it probably is 18tpi, either 5/16 BSW or 5/16 UNC.
I reckon UNC:
I don’t have either tap, just 5/16 UNF. So I can’t compare. What do you think?