Have you checked condition of radiator? i thought mine was fine until i degreased the engine and power washed everything, i must have caught the back of rad and was surprised to see lots of fins missing afterwards, they must have been rotting. Thermostat check sounds like an easy starting...

What type of heater is it Chris?

I live in BA and going to Eldon Square tomorrow morning if that's any good.

After fantastic service from Paul, setting me up in record time after the anti-spam software took a dislike to me, id thought id drop by this section and say hello. Ive just bought a fantastic '86 90. Fully rebuilt by previous owner with new chassis, bulkhead, 2" lift (inc corrected bars...