Handfast Posted September 19, 2023 Share Posted September 19, 2023 Hi everyone! New to this forum so this is my first post. I’ve been contemplating for some time now wheter I should upgrade my Radiator or install an aftermarket oilcooler. I have done 2 trackdays so far and it’s fairly easy to reach high oiltemps after a few hotlaps. (Reaching towards 115-120 degress celsius. (I have an aftermarket oiltemp gauge in the door vent) watertemp sits about halfway on the stock gauge but the fans do kick on freqently. I feel the Z could use some improved cooling but I don’t want to get stuff I might not need.. Since watertemp also seems a bit high Im thinking about buying an aftermarket radiator since it will affect both water and oiltemp. Im curious if this will be enough in my case or if I should just buy an oil cooler instead. Maybe both? but like I said I don’t want to buy stuff If it’s not required. Do any of you guys track your Z? Anyone who has perhaps just done one of these mods and can share what temps you reach at the track. cheers! P.S My car: 2005 Nissan 350Z VQ35DE. Mostly stock with mild intake mods and catback exhaust. Running Motul 300v 5w-40 oil. Quote Link to comment Share on other sites More sharing options...
RyanT Posted September 19, 2023 Share Posted September 19, 2023 While you’re in there I’d say do both. But, the oil cooler is the more required upgrade in my experience. Quote Link to comment Share on other sites More sharing options...
Eddie_r32 Posted September 19, 2023 Share Posted September 19, 2023 These cars are tested for normal driving in death valley coping system is up to the job, they are not ragged in death valley and oil cooling system is not up to the job, oil cooler first. Quote Link to comment Share on other sites More sharing options...
Handfast Posted June 3 Author Share Posted June 3 (Update) I ended up upgrading the radiator to a Koyo hyper-V 36mm, from the stock 16mm oem unit. I just recently drove on track again and the cooler seem to be doing a good job, but ultimately I still reach about the same oil temprature. Positive gains were: - Sits a bit lower in temprature generally , maybye about 3-4 degrees celsius cooler. So takes a little bit more time before it reaches those higher temps - When you do reach those higher numbers it cools down quite a bit faster. Before I needed atleast 2 cool down laps before I could step on it for 1 lap. Then I’d be at the same level again. Now I can do just 1 cool down lap and drive 2 hotlaps before reaching the same temprature. So I will probably purchase a uprated engine oil cooler aswell when the time comes. Thought i’d just share some updates 🙂 Quote Link to comment Share on other sites More sharing options...
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