I have a 2000 f4 and when i run it hard through all the gears it pisses coolant out. It only seems to happen when over 10k rpm. The coolant is coming from up around the thermostat. I bypassed the carb coolant lines and ran straight from the thermo to the water pump. All hoses checked, gasket appears to be good, and no coolant in the oil. Any help would be greatly appreciated . Thanks

ps no overheating and when i stopped to put more antifreeze in (50/50 gas station ****) it continued to leak for about 5 minutes maybe a pint or so of fluid

 

Thermostat Housing perhaps. They have been known to fail w/ age.

 

Illl take a look at that thanks