Hi,
the RS Turbo S2 from my friend Is overheating dramatically. Normal driving through the village is already a problem.
Attempts to solve the problem:
-) original Ford water pump
-) radiator from airtec
-) coolant circuit vented forever
-) Spal fans
-) switches to start the fans very soon
-) driving without thermostat
-) head gasket check and fine
-) head was sent to a company, 100% okay

Car runs hot original and with chip. Performance of the engine is great. Lambda values perfect.
We honestly don´t know how to go ahead.
Are some engines known to have troubles with coolant circulation? Installation of an electrical water pump?
Opening up of the head gasket holes to the cylinder head?

 

Is the engine actually hot is is it just the gauge indicating hot, when it isn't?

 

Engine is hot. Water in the tank is boiling as hell. You feel unsafe standing next to the engine bay.
I know that the gauge can´t be taken as realistic measurement.

I have checked the forum here very detailed. There are a lot of threads regarding this topic, but I haven´t seen one where the problem got solved. On the other hand there are highly tuned cars on the road without
any troubles.

 

have you tried a new expansion bottle cap?

 

bottle cap new. more or less everything is new. As sad as it sounds, we where hoping that the head gasket or head where foowked...

 

Is the return hose to the bottle blocked?

Seen it before where the return on top of the bottle has a brass pipe in the plastic which gets blocked and causes loss of circulation

 

HI,
"bottle" is the expansion tank? It is also new and works.

 

 

beat me to it ...take readings before guessing.

 

not f800 yhb in grey is it

 

What, in AUSTRIA?

 

Hi,

no...

Bigger radiator organized, new intercooler setup, mocal oilcooler, 88°C fan switch,... installation in the next couple of weeks.