Over Heating Nooooooo!!!

I Just Frop A 96 B18c Engine Into A 96 Civic Lx. It Runs Nice. But When I Push It Hard And Keep A High Rpm The Heat Gauge Seems To Rise To About 3/4 And Stays There Ofr A While Then If I Continue To Keep A High Rpm The Temp Gauge Will Redline, The Second I Let Go Of The Gas The Temp Will Drop. Is It A Bad Thermostat. Dosent Seem Like A Head Problem To Meeee??? Hellllllllp!!!!!!!!

aren't the radiators in the civics and integras different sizes? could it be that the civic's radiator can not keep the motor cool? just a thought though. i swaped in a b18 into a freinds CRX but we put a new radiator in at same time!! so i dont know?

Yea I Changed The Rad Too?

i would go ahead and replace the thermostat. its chepa and easy and that will give you better insight.

where does the temp gauge sit normally? i bet they are right, sounds like the thermostat could be bad.

Ya I Think Im Gonna Have To Deal With A New Thermostat. Maybe A New Fan Too