Quote Originally Posted by black olive View Post
drain your cooling system off- assume position again, and put a 15mm t piece in place of your heater passenger/driver distribution valve. should take just about long enough for you to pass out, and not be able to walk properly for an hour when you get out of the car....

https://www.two-sixties.co.uk/mgoc26...ead.php?t=5936
If I do that, how is the level of heat controlled?