Thread: Fuel Cooler Removal Td5

Originally Posted by northiam

Those infallible LR engineers deleted the fuel cooler thermostat MY04 td5 when the fuel cooler was "redesigned"

Love it.

Heaven forbid anyone change an earlier TD5.

Happy Days.

I have read on other forums of earlier models not having the cooler at all but they aren't confirmed because others had popped in and said theirs was an even earlier model and it DID have a cooler/heater. Maybe it's was a maybe/maybe not thing.



Happy Days.

What engineers want to do and what they are allowed to do are 2 different things. For example ask SWMBO

Originally Posted by joel0407

Love it.

Heaven forbid anyone change an earlier TD5.

Happy Days.

LR redesigned virtually the entire flow of the cooling system for the MY04 and used a completely different style of cooler.

With the pre EU3 engines the bottom section of the radiator is independent from the main radiator core so the fuel cooler effectively has a dedicated cooler.

cheers
Paul

joel0407, it is a heat exchanger, not a cooler, it is there to maintain a constant fuel temperature , so that the ECU can also maintain constant accurate delivery to the injectors. I think if you use uncontrolled fuel temperatures the ECU will be constantly searching for the right mixtures and may, if my thinking is correct, even effect the gearbox change points. I am in no way an expert but interpereting what I've read previously. I live and learn and am certainly open to any other views on this. It is very simple to maintain the heat exchanger and I would not change mine.

I'm happy to accept heat exchanger and I can see the advantages of keeping a constant fuel temperature.

I really like stirring the pot when some when says "don't change it, some engineer spend a long time working that out"

Engineers are pretty limited as the engine has to be designed to work all over the world in temperatures from minus 50 degrees C to more than 40+. Somethings that maybe needed for a climate of -50 degrees may just be something else to go wrong here and could be hampering performance.

Just like so many engines are tuned to meet emission requirements but the motors run far better and produce more power with an aftermarket tune.

Then there's the working to a price factor. If their budget wasn't an issue all TD5 engines would have come standard with some sort of variable turbo like the VNT that many fit to get more power down low with out sacrificing power up high.

Happy Days

May as well tear the oil to water heat exchanger off the other side of the motor whilst you are at it
Andrew

Originally Posted by Chuc

I am in the middle of a Head Gasket change and have noticed this thing called a "Fuel Cooler" on the intake manifold where the Diesel from the rear fuel tank goes through before it is then pumped into the Td5 common rail.

To me it looks more like a fuel heater ( with heater water going through it ) not a cooler.

What happens it I remove this and bypass it al together ?

My school of thinking is the cooler the fuel the more HP you get.

Or, is it all about atomising the diesel for beter combustion like an LPG converter ?

Look forward to advice from the techs that know .

Just a quick note.........
A LPG convertor coverts liquid to gas, and on complex convertors also reduces pressure.......if anyone is interested!!!