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It seems that the Duchess has complete compression loss in one cylinder which the mechanic considers that is most likely due to an ineffective valve. We will know more when the heads are off. If this is the case it would seem appropriate to change from P6 heads to SD1 heads if I have to have...

Hi all Just had the rear calipers and diff mountings replaced. The diff mountings were polyurethane rather than rubber. All the fitting was pretty straightforward. When I drive the car now at about 60 mph a vibration starts which gets worse and worse - it does not drive through it, so to speak...

Hi all Just got the Duchess back after replacement of the heater/cooler unit blower which was completely knackered after 50 years. Great job plus got thermostatically controlled internal temperature- a bonus. Incidentally does anyone know of a reputable company who will do a dyno test on an...

Does anyone have such a thing? It is the dash mounted switch with a transparent green operating knob - the usual Rover P6 dash knob - which controls the engine vacuum destination. In other words the engine vacuum is diverted to the vacuum motors in the heater cooler unit to open/close flaps to...