ok i saw that there is supposebly some sort of special method to replace the thermostat on these engines. am i correct or is it just like the rest? drain rad, remove thermostat, replace with new thermostat, refill coolant 50/50 water/prestone then run with heater on for 15 mins.
it is a '91 Z34 with the 3.4l dohc.
if someone could just post a little write up on the whole procedure that would be the cat's ass....thanks.
and yes i bought a 190degree thermostat, just have to drill it now.