Coolant & Oil temperatures

[rotar bones]

Originally Posted by Sephitrask

Why are you wanting to install a secondary radiator? Are you having cooling issues now? If so the issues causing that needs to be remedied before any modifications are done. On to the answers to your questions:

Oil temps do not turn on the fans, coolant temps do, and they turn on at around 210 F. Rx8performance.com sells a relay kit that turns them on at 185 F, I have that on my car. For the oil temp sender I found it best to get a modified banjo bolt that you can screw the sender into and us it to replace the banjo bolt either on the front cover or drivers side oil cooler (put it on the side pre-cooler not after) You can get an oil filter sandwich adapter but I found that the oil filter location made the thing a bitch to deal with.. I ended up throwing mine across the driveway in frustration and ordered the before mentioned banjo bolts. Again, Scott at Rx8performance.com made those for me.

All in all the cooling system on the rx8 is very good if functioning properly, unless you live in extreme heat or track the car it should be fine. Do you have a undertray that is intact? it is an essential part of the cooling system

You

[Sephitrask]

Originally Posted by rotar bones

You are making assumptions about a secondary radiator. I am replacing the stock one with one that maybe an inch larger in size and am moving it to the center of the grill behind it to achieve more efficient cooling. Thanks for the info on the banjo bolt , that makes a lot of sense. I run my 8 some what harder than some folks. I run the mountains every week end as duty allows and that is a lot of stress on the motor. My desire to set the temperature switch to 10 degrees lower is because I stress my motor racing around at 11,000 feet. Yes my under tray is intact and I am going to change it to this( see attachment) type for cooling the transmission oil during my runs up and down the mountain. On a typical 95 degree day the car gets really hot and I don't want to wait for the tow truck yea!. Thanks for the input man.

I misread the initial post, my bad. So the car is an auto then? I havent done measurements on the location your talking about moving it to, but it seems like it would be to narrow for a non v-style mount. If you go through with it please take pictures, I would love to see it.

[rotar bones]

Originally Posted by Sephitrask

I misread the initial post, my bad. So the car is an auto then? I havent done measurements on the location your talking about moving it to, but it seems like it would be to narrow for a non v-style mount. If you go through with it please take pictures, I would love to see it.

I will take pics as it will be interesting to see how it turns out.