Overheating
#1
#8
Way back when..........when I got my "crashed, insurance totalled F2" that I rebuilt for CCS racing, I only had 585 miles on it when I got it. I raced it for only 3 or 4 weekends and it started over heating very quickly. It had plenty of water in it, no air bubbles, and the thermostat worked fine. Replaced the water pump. Problem solved.
#9
Pull your sparkplugs and check for signs of coolant on them. Look for white crystal like build up, or wet (like water wet, not fuel). All the plugs should look relitively the same, so compare them closely. I'm thinking you might have a head gasket issue, leaking into a cylinder(s) instead of out where its visible.
Best if luck.
Best if luck.
#10
+1 to dragons comment, had a car do this, gasket went between the coolant lines and the cylinder, hot exhaust from the compression stroke entered the coolant and started to boil it within minutes, no leaks or mixing with oil, auto parts store will sell you a tester to test your coolant for exhaust gases, dead giveaway for head gasket, best of luck