Temperature Gauge on old B20

[philbrooks]

Hi, i have an old B20 and i want to fit a temperature gauge so i know when to stop as she overheats when mowing in the summer. I think my best option is one of the retrofit in pipe ones where you cut the pipe and add an insert with a built in sensor that wires to a gauge. Can anyone suggest a better option?

Can any B20 owners out there please measure the external pipe diameter of a sensible pipe to add this to as my B20 is at my house in Slovakia and i am currently in the UK, not back to my tractor for a few months.

thanks

 

[philbrooks]

Before you ask, the radiator screen is clean, fan is working fine and full of coolant.
She usually overheats when its a hot summers day and after 20 minutes with a 4ft Bush Hog.

I feel a lot of heat by my left leg, she loses power and then boils over.