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Mike Noc · 11th December 2019, 15:45

The pattern thermostat housings aren't that strong, and despite the steel inserts around the holes, they can crack if overtightened.

IIRC the book setting is 8Nm which isn't much more than a nip.

11th December 2019, 15:45	#8
Mike Noc This is my second home Rover 75 CDT Manual Connoisseur SE, Rover 75 CDT Automatic Connoisseur SE & a Freelander Td4. Join Date: Jul 2009 Location: Hampshire Posts: 11,550 Thanks: 3,470 Thanked 3,119 Times in 2,247 Posts	The pattern thermostat housings aren't that strong, and despite the steel inserts around the holes, they can crack if overtightened. IIRC the book setting is 8Nm which isn't much more than a nip.