But I'm almost at the end of my patience with the car now

, with a newish gearbox, clutch etc and now rack boots. It still has drivetrain noise quite badly. Its overheating again because, and I don't know why the fan wont cut in?? (Thank god for the AIRCON fan that keeps it at normal temp when turned on) The dreams are fading slowly I think I might save for a 405 or 306, but they probably aren't as fun to try and work on.

:roflmao:
If the fan is not turning on when the motor is getting hot it is probably a blocked radiator as the usual set up (I don't know these cars in particular) is temp gauge sender is in the head and thermo switch for fan in radiator. So if the radiator does not get hot because there is not eneough flow the fan does not turn on and overheating results.