Cooling problems

[Thrumbleux]

https://www.engineeringtoolbox.com/e...col-d_146.html

Half way down the page shows a chart with SHC. Significant differences.

Quote:

''Note! The specific heat of ethylene glycol based water solutions are less than the specific heat of clean water. For a heat transfer system with ethylene glycol the circulated volume must be increased compared to a system only with water.''

[heinkeljb]

Take the water pump off, take the radiator off at the front. Use a hose and push lots of water through the pipes and through the block. When you are sure it is clear. Check the water pump.
Re-assemble, fill with antifreeze mixture. Bleed and then test the system.
As mentioned earlier, check the radiator for damage. Closed air holes WILL make a difference to the amount of cooling the radiator can provide.

John

[mottofreee]

At the beginning of next month I want to replace the water.
The water pump I will not drop it. All the engine I will drop it down.
I undo the hoses from the thermostat and put the garden hose to run back water in the engine - from the thermostat to the water pump.

[tolsen]

A problem with the 450 diesel is the engine does not produce much heat. To reduce heating loss and increase engine temperature I therefore once tried running on neat 100% glycol. Specific heat capacity of neat glycol is less than water and glycol water mix. I found engine would heat up faster and I had no problems with engine over heating.

[mottofreee]

Indeed, thermal management is inadequate at 450 cdi. Well said, unfinished.
A modified thermostat, a restrictor, an oil recharger + engine cover are some improvements.