Thermostat

Can anyone tell me if it is possible to get a cooler running thermostat than the standard setup? I have a 98 p38 Rangey

you can get 89 degrees and either slightly higher or slightly lower, can't remember which.

in anycase its not as simple as that, to keep the engine cooler you would need to upgrade the cooling system.

landrover have spent a lot of money developing the system, all be it not that well, but do you think they just came up with a figure and made it read that number?

on my obd2 software mine runs at 89 - 90 deg c so i suppose the stat must open earlier, if you were to fiddle with the engine temp then you would mess the fueling up i would imagine!

Yes I did figure that, I was also considering a rad from RPI, which is a cross flow type. Can the ems be fooled to ignore the cooler running?

ATB Jon

no doubt it can, i would assume some kind of electrofunkery to up or down the resistance from the temp sender, best thing to do is test the temp sensor at cold and monitor it as the car warms up. if you have obd software, you can monitor the temp in that. see what resistance is at 10 deg intervals then adapt the signal to read the cars required (89) temp when it reads the desired temp.

in theory anyway!!!!

jonny427 said:

Yes I did figure that, I was also considering a rad from RPI, which is a cross flow type. Can the ems be fooled to ignore the cooler running?

ATB Jon

Click to expand...

If you do decide to change the rather stupid RR rad with the flow & return at the top (or are these only fitted on the diesel?) for a more normal one with flow top & return at the bottom I would be interested to know which Rad you use and how easy it was to fit. The existing Rad defies the laws of physics which may account for why the cooling system seems so marginal.

the petrol is top and bottom, i would assume the internals of the diesel rad force the water to the bottom then back up the rad. i.e an internal pipe.

no one is that stupid are they???

i might be gav i think maybe not quite but know i dont know mmmmmmmmmmmmmmmmmmmmm not sure?

gavbriggs said:

the petrol is top and bottom, i would assume the internals of the diesel rad force the water to the bottom then back up the rad. i.e an internal pipe.

no one is that stupid are they???

Click to expand...

The header is blocked halfway across so the hot water enters at the top and descends in half the rad, then is forced up the other half by the pump against the direction it would flow naturally as it cools. Water as it cools likes to go down not up, so the system will not flow by convection and relies entirely on the pump to force the water up the rad against it's inclination. As I said stoooopid.

The petrol runs at around 96 for lower emissions emmissions? Anyway these would run better if the ecu can be tricked, the ideal if you want to tune them is around 70 degrees. There are crossflow high capacity rads available. Will look for more info.

Fitting a cooler thermostat, if you can get one. Is the only way of running it cooler. In the old days a winter stat was around 84 degrees a summer stat was 74 degrees. Now they don't seem to bother changing them for seasons.