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I figure there are a few N1 guys on here. where is the rear diff cooler located on your car and how does the pump work on the thing. (when is it on/off?)

I'm looking at the idea for my GTS4 to keep temps down on it. also looking at one for the gearbox as well.

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pretty sure it was the aussie delivered models that came with the diff cooler, not n1s. n1 came with an oil cooler

*edit* sorry transfer case cooler, not diff. here is the only info I have (from the aussie gtr service manual)

r32_aussie_xfer_case_cooler.jpg

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if I I am looking at the image correctly its temp based. my goal is to be able to read temps on every aspect of this car including the 3 coolers on the driveline.

Good work mate. Interested to know also what is optimum temp. for gear/diff. oil hence when you want the pump to start flowing through the cooler...

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FYI:

found the diagrams for the operation of the cooler.

only thing unclear is the turn on temp.

transfer_case_diagrams.pdf

I'll be doing this with mine and trying to do it with 3 coolers. there are enough places in the front relay panel to place 3 separate relays so it fits neatly.

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https://www.sau.com.au/forums/topic/342381-r32-n1-owners/#findComment-5527179
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FYI:

found the diagrams for the operation of the cooler.

only thing unclear is the turn on temp.

transfer_case_diagrams.pdf

I'll be doing this with mine and trying to do it with 3 coolers. there are enough places in the front relay panel to place 3 separate relays so it fits neatly.

Nice work!

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https://www.sau.com.au/forums/topic/342381-r32-n1-owners/#findComment-5529833
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