rb25 overheating - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

zerocoolalmi · 08-26-2011, 09:46 PM

When I'm running my RB25 on idle or High RPM it get's hot real fast. The Upper RAD hose is HOT and
the bottom one is cold... I was not just of what could be broke beetween the Waterpump or the
Thermostat ?

So I took off the thermostat and tried running the engine again. The Temp Gauge don't climb over
the mid bar... so it's perfect ? But after a couple of metal to metal the temp gauge goes back to the
top.. because the coolant does'nt have the time cool down in the rad before going back into the engine

I tried my stock thermostat into boiling water at home... and the thermostat is working.. so I put
everything back in place... and still Temp Gauge goes back in the red"

Someone have any ideas ?

08-26-2011, 09:46 PM	#1
zerocoolalmi Join Date: Jan 2010 Location: quebec plessisville Age: 34 Posts: 44 Trader Rating: (0) Feedback Score: 0 reviews	rb25 overheating When I'm running my RB25 on idle or High RPM it get's hot real fast. The Upper RAD hose is HOT and the bottom one is cold... I was not just of what could be broke beetween the Waterpump or the Thermostat ? So I took off the thermostat and tried running the engine again. The Temp Gauge don't climb over the mid bar... so it's perfect ? But after a couple of metal to metal the temp gauge goes back to the top.. because the coolant does'nt have the time cool down in the rad before going back into the engine I tried my stock thermostat into boiling water at home... and the thermostat is working.. so I put everything back in place... and still Temp Gauge goes back in the red" Someone have any ideas ?