Originally Posted by
Stavros
Mike- Going by most SX owners comments the SX's ones rarely if ever turn on in the entire life of the car, even with hard use, which surely says to me they set too high?
And how do they fit?
Markb- Surely thats EXACTLY the same as using second hand any part for your engine though,
Mark1- Im using it on a 2wd rear diff and 2wd box
From memeory, it is switched to only come on in extreme temps (135°C springs to mind, but it is a LONG time ago, so just phone any Niassan dealer and they will be able to confirm this), which is why very few cars get them hot enough to operate, hence why they all should be in good working order.
To fit, on the back plate you will need to weld in three bosses, two at the bottom and one at the top. The two on the bottom are for the temp switch and the oil feed to the pump. Obviously the one on the top is for the return after the cooler.
You could run it manually with a switch and instead of the thermo switch being mounted at the bottom, put a thermocouple for a gauge. The only problem with this is that you don't want to have to keep checking this if you are concentrating on driving, so I would recommend plumbing it up to auto control.
In the end, I never fitted mine, due to the fact that I ran an ATB, there is no shearing forces that you get with a plated diff, so I never saw temps above 110°C in the most extreme conditions.