27-12-2012, 03:33 PM
The only thing I don't like about the temperature rising like that is the fact that the coolant system pressure rises past 95*c so rapidly... Yes it turns it more efficient etc, but in general driving, you'll never see it, I'd rather the system runs at 83*C all day long safe in the knowledge there's no hotspots etc...
If there's ANY airlocks and the pressure builds, there's no chance of them getting out and it makes them hotspot worse... DTs are the same, the fan temp is WAY too high, if you bring an XUD9 on boost past 100*C it'll often just blow the gasket straight away... It's just one of the problems of running an ally head on a steel block - metals expand at different rates, soon as you give it some stick, it wrecks the gasket - especially when the coolant system is at high pressure, it wants to find a way out...
In an OEM application, it's fine to run at 105*c... When the car is 15 years old, it'll end in damage being done...
If there's ANY airlocks and the pressure builds, there's no chance of them getting out and it makes them hotspot worse... DTs are the same, the fan temp is WAY too high, if you bring an XUD9 on boost past 100*C it'll often just blow the gasket straight away... It's just one of the problems of running an ally head on a steel block - metals expand at different rates, soon as you give it some stick, it wrecks the gasket - especially when the coolant system is at high pressure, it wants to find a way out...
In an OEM application, it's fine to run at 105*c... When the car is 15 years old, it'll end in damage being done...
