Originally Posted by CooperMan
I used to drill 3 small holes in the 'stat flange to allow some 'bleed' if it failed shut, ok the engine takes a little longer to warm up but used to be a bit of a hot summer / racing failsafe
The cheap one from Rimmers doesn't have any holes in flange but the other two have. I ordered the OEM one which has one hole with a split pin.

Last edited by GrumpyPa; 18/07/23 07:41 PM.
1956 Plus 4 4 seater