Thread: D2 V8 Inline TSTAT install

I'm not sure about the pressure, but the original system "blends" fluids of differing temps,, thats the way LR's have always done it. The inline thermo (when it opens) just dumps cooler water into the system,, does it work? sure. Is it a mechanically sympathetic way of cooling? nope.

Originally Posted by Pedro_The_Swift

I'm not sure about the pressure, but the original system "blends" fluids of differing temps,, thats the way LR's have always done it. The inline thermo (when it opens) just dumps cooler water into the system,, does it work? sure. Is it a mechanically sympathetic way of cooling? nope.

I agree that the original D2 LR cooling system works well in Europe and the colder parts of Aus But it is a pretty Woeful system in 40c+ temps, Ask me how I know.

I feel for you in the 40's,,

I am no mans engineer ,, but if the volume of coolant doesnt change between between thermostat installs,
(and you'd have to ASSUME at 40 even the OE one would be wiiiiiide open,,)
all other things being equal--
how can one be better than the other in hot climates?

The way I understand how the LR cooling system works is that it sends "Bursts" of cool coolant to the engine and an inline thermostat will provide a "constant" flow of cooled coolant to the engine.
I imagine that a constant flow would be more beneficial to the engine in high temps than the odd burst of coolant would, In low temps the opposite would be the case.

Originally Posted by trout1105

The way I understand how the LR cooling system works is that it sends "Bursts" of cool coolant to the engine and an inline thermostat will provide a "constant" flow of cooled coolant to the engine.
I imagine that a constant flow would be more beneficial to the engine in high temps than the odd burst of coolant would, In low temps the opposite would be the case.

Pedro is right, once the thermostat is open, it's open .. just a constant stream of hot coolant from engine to radiator .. in both the inline and bypass types.
The issue with the bypass is (apparently) that part of the already hot engine side coolant goes back to the engine(uncooled by the rad) and a portion of the hot engine coolant goes through the rad ..

ie. in the std LR bypass setup, not all the coolant from the engine goes through the rad.

In cooler weather, when the rad has a chance to cool the coolant to lower than the thermostat opening temp .. this is when you will get 'cool bursts' of coolant situation.

I have a V8 D2 I live in the Pilbara and have no issues with cooling. It sits from 89 to 92 on a mid 40 degree day. Standard cooling system. If have wrapped my extractors with header wrap unsure if it made a difference.

If you are having issues check radiator condition and viscous hub operation

Originally Posted by nigelbuilding1984

If you are having issues check radiator condition and viscous hub operation

The hub is new and the radiator, hoses, thermostat and water pump is also new