BillyCorgi wrote:The pressure setting of the STI radiator cap is not known compared to the standard variety?
The function of the pressure setting is to elevate the eventual boiling temperature of the coolant fluid.
The higher the pressure the higher the boiling point.
So, a higher pressure cap will not lower the engine temperature rise, it will only elevate the temperature at which the coolant will boil.
At higher pressures all the hoses and system will be under greater stress, so better hoses or a hose change-out (to new) may be required.
At operating temperature, the thermostat will be wide open.
Modifying the thermostat to open earlier will not change its opened position at higher temperatures.
Fully open will always be fully open.
The only way to lower the temperatures is to increase the rate of heat transfer.
That can be done be increasing the rating of the radiator (larger?) and/or more efficient.
The other way is to increase the efficiency of the coolant.
Plain water is a more efficient heat transfer fluid that a Water Glycol mixture, however it has a lower boiling point than a water/glycol mixture.
Per unit volume, water will absorb more heat within the engine and reject more heat at the radiator.
Dropping and changing the coolant before and every track event may be an pain.
If you already have a tuned engine, then maybe a larger core radiator is the most straight forward solution.
(By the way, I am a Heat Transfer SME)
Hoping that this helps?
Cheers!
SIMBAT wrote:would i have done any damage letting it get that high?
KiDo_Tuning wrote:Hot tip for the H6 (excuse the hot pun)
Water wetting agent such as Redline Water wetter helps cool the radiator temps significantly as it breaks the surface tension of the water, to draw more eat out of block but also allows radiator to more more effectively
666 wrote:KiDo_Tuning wrote:Hot tip for the H6 (excuse the hot pun)
Water wetting agent such as Redline Water wetter helps cool the radiator temps significantly as it breaks the surface tension of the water, to draw more eat out of block but also allows radiator to more more effectively
Same advice I was going to give^^^^ Try the Redline Water Wetter after you have flushed the system clean, it may help. Sounds normal what happened though. You must have been soaked as a driver on the day, same goes for the car. By the way how are your tyres after the track day?
Rob
Return to 3.0R & 3.6R engine specific
Users browsing this forum: No registered users and 9 guests