Had to pull the lower radiator hose for the GB alternator installation, so all hooked up and filled the overflow tank full last night, but this morning it is still full. Best way to refill the coolant?

 

The system should "self-bleed" and should have leveled itself.
Have you tried pumping the lower and upper hose to promote air release?
Also is the car level?

I too had to remove the lower hose to Install the alternator, as the main long bolt was hitting the lower hose.

 

So I pulled the line that is on top of the radiator and the reservoir drains faster, put in fluid until it ran out of the nipple, hooked up the hose and topped the reservoir. Charging the battery like GB says do before cranking.

 

If you haven't ran the car again yet, then the thermostat has yet to open to have refilled the lower hose & radiator.

 

is the car sitting level? it should be .
is the vent hose for the water bridge port routed under the top radiator hose if so rerout it so it goes over the top

 

I find that venting through that nipple on the radiator is the most reliable way to fill the system- make sure the expansion tank cap is off whilst doing that and when you see coolant coming out from the nipple, the small vent hose is then reconnected- run the motor with the expansion tank cap still off until the motor warms up. Check the expansion tank level is around the seam of the vessel and then fit the cap. Take the car for a short run and then recheck the level.

 

Went with the top radiator nipple un done and kept filling until it flowed. Filled the expansion tank to the top and capped, then drove around the taxiway until it was good and warm. Driving with the right rear shock shaft frozen in place and open MSDS header! Hope to free up the shaft by driving it here with the big end nut off. But just checked the expansion tank is about half full, will top it off and do the same tomorrow. Until I get the new exhaust made I cannot drive it on the road.

 

The best expansion tank level is half full -aka at the level of the joint seam is about optimal.
The logic is quite simple- the expansion tank volume is approx 2 litres - the coolant inventory is about 14 litres and when it heats up to operating temperature it expands by about 0.5 litres. Thus the air space above the coolant compresses and reduces to 0.5 litres. The starting pressure is atmospheric or to be more precise, 15 psia so as per good old Mr Boyle the pressure doubles to 30 psia or 15 psig. Fill the expansion tank too much and the tank will overpressure and blow out through the safety release valve in the cap.

 

All true! I am sure I will dump overboard some coolant the first day or so but also any air bubbles making their way to the expansion tank will be pushed out too. I will generally run with the tank half full.

 

Vacuum fill with an AirLift kit and your compressor. Makes filling any cooling system a one and done process and let's you check for leaks before you put the coolant in so you don't have to drain it again to fix a leak.

Hook up AirLift to reservoir, pull vacuum using compressor, close shut off valve, move feed hose into bucket of.coolant mix, open cutoff valve, wait until vacuum gauge goes back to zero - done.