Hole thread on clamshell Cyl head?
Ok, any of you anoraks know the thread on the 1/4" hole beside the top spark plug on the Clamshell Cyl head?
It's the screw for the temp guage sender.
I'm guessing UNF or UNC, but I'd rather not find out the hard way I got it wrong & Belgium cut a metric thread!
Having proved my NMEA upgrade works electrically, I am now fitting the sensors in a less "lashed up" manner. Temp under a cable clip where it is currently wedged is of limited use!