st205 charge cooler operating questions

[jasongtr]

and for those that asked the pipe work looks just under 25mm OD

[Moo]

You shouldn't be getting near boiling the water in the system if the pump is actually flowing coolant around the system. I have a temperature gauge on the coolant outlet of the charge cooler and the worst I see on a functioning system is around 20°C over ambient immediately after boosting.

My money is on the pump had it or not up to the job in the first place.

[shinny]

and for those that asked the pipe work looks just under 25mm OD

19mm ID is what's generally used on the charger cooler conversions. Bigger is "better" but obviously loads the pump more as it's pumping a greater mass of coolant.

[jasongtr]

Next question then, what's the upgrade? Radtech?

[bobhatton]

and for those that asked the pipe work looks just under 25mm OD

Great, 25mm is right but that should be ID.

That small change going up to 25mm ID could well give you a 25% increase in water flow depending on where the pump is on its curve.

To make the heat exchangers work well they need “turbulent flow” in the cores. That is when the water is going so fast the water touching the core itself is held back by the friction. This makes the water tumble, so the water in the middle that would pick up no heat if it was laminar flow gets moved to the core sides and picks up heat.

[jasongtr]

Random double post - ages after the first one, perhaps my phone is running hot too

[bobhatton]

Next question then, what's the upgrade? Radtech?

Bigger pipe work, bigger pump and a real charger cooler.

http://www.bellintercoolers.com/_pages/ ... dCore.html