Which one is good for engine? hotter or cooler temp?
Good question Dearot....
When you say good or bad, I take it that is good for efficiency and not performance?
I would have to say that an engine is more efficient fuel-wise when hot, cooler temps make an engine run rich but then there is no reason why an ECU could not be re-mapped to suit this lower temperature.
For performance..... a slightly cooler engine would be of benefit, cooler air gives better combustion which gives more Ummphhhh.
On the whole a cooler engine would be less stressful on the engine block, Rimmer Bros were selling some product that you add to the coolant system to make it run a few degrees cooler.
As MHM said the Craig David pump would be best for the KV6, in fact I would fabricate some sort of inter-cooler for the IRD and keep it separate from the main coolant system on the KV6.
EWP for KV6 is no doubt the best only if you can the thermostat to open earlier otherwise it still face with thermal shock. I can see the thermostat on my KV6 very late to open as there is much temp different between the top hose and bottom hose of the radiator. it is shocking!
As I am thinking to bypass the thermostat http://www.landyzone.co.uk/lz/f9/dreaded-head-gasket-issue-newbie-39768-7.html, ECU remapping sounds very interesting but what exactly this ECU can do to maintain the same fuel-economy if the temp is lowered?
Looks good Dearot!! If you are having problems obtaining pipework try some of the plastic fittings and hose connectors from plumbers merchants, the dark grey stuff pressure pipe (metric), not the light grey domestic type (imperial).
You might even be able to incorporate another thermostatic valve on the bypass, depends how much tinkering you need to do.
Regarding the ECU, I would only suggest as a last resort. Basically the injector pulse speeds and duration can be altered to suit, timing, air intake temperature, throttle position etc. A bit like adjusting the jets and floats on an old school carb
Definitely I will be needing preferably Y piece 22.4mm (OD) and T piece, 22.4mm 32.5mm. Do you have any LR1796?
Engines run much more efficiently when cold.
Ideally an engine is designed to run a coolant temp of approximately 102-105 deg C. This helps atomisation of fuel and stops fuel puddling on cylinder walls. The coolant also removes heat from the oil because oils need to work within temp limits.
So really to get the best economy and power its probably best to try and stick to about 102 dec C.
I am new to Freelanders so someone might have come up with this before.
I used to have a Reliant Scimitar ( it did have 4 wheels) it was fibreglass and had a ford essex 3.0 litre engine. As the fibreglass held in the heat they sometimes suffer from over heating. People found that by drilling a 3mm hole in the inner edge of the rim of the thermostat it would always allow some coolant flow round the engine. It did make warm up a little slower but it would also stop thermal shocks.
Might be worth a try? I cant think of any reason that this might cause a problem but you guys are the Freelander experts.
Ideally an engine is designed to run a coolant temp of approximately 102-105 deg C. This helps atomisation of fuel and stops fuel puddling on cylinder walls. The coolant also removes heat from the oil because oils need to work within temp limits.
So really to get the best economy and power its probably best to try and stick to about 102 dec C.
I am new to Freelanders so someone might have come up with this before.
I used to have a Reliant Scimitar ( it did have 4 wheels) it was fibreglass and had a ford essex 3.0 litre engine. As the fibreglass held in the heat they sometimes suffer from over heating. People found that by drilling a 3mm hole in the inner edge of the rim of the thermostat it would always allow some coolant flow round the engine. It did make warm up a little slower but it would also stop thermal shocks.
Might be worth a try? I cant think of any reason that this might cause a problem but you guys are the Freelander experts.
Thats what I am trying to achieve. some sort of small bypass. in your experience with the hole on thermostat, do you think it will lowered the operating temp? by how much approximately?
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