It's all about what you are going to ask of the car. I went years without one on my Z. Did fine for daily driving. But if I wanted to really hammer on it for more than a few turns, she started pulling timing really quick, especially in the Texas summer heat. For example, the one time I got it out on the track while she was still my daily, I did one warm up lap and by the third full speed lap (with traffic) she was in limp mode on the back straight at COTA. I backed off right away and only experienced any rev-limiting at 5000 RPMs.

Now that I no longer daily drive the Z, I am looking to get her out on the track a lot more. So I purchased a 34 row Fast Intentions oil cooler that will allow me to do more than 3 laps at full speed :tup:

If you’re running a thermostatic plate, maybe it’s not opening at all or enough.


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I'd recommend a 25 row cooler, but NOT FROM MISHITMOTO. 99% of their "products" are re-branded Chinese eBay knockoffs that they slap a sticker on and upcharge you by 200%. This forum abounds with stories ab their products failing.

Friends don't let friends buy Mishimoto.

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Friends don't let friends buy Mishittymoto. Some of their stuff is just junk.

2 options for an oil cooler. Z1 34 row, or the FI 34 row.

So I just tested the sandwich plate and it works fine. The lines all look fine with no kinks either.

Am I really just beating on this car so hard? I have a pressure gauge on order probably going to mount it in the cubby. And going to fab up some simple baffles.

It's not like I'm in AZ like Hotrodz

Trackspec Hood vents worked great! It took much longer to get to peak temp (240F Oil, 208F Coolant) Air temp was around 58-68F all day so that helped a lot too. Still going to duct and relocate all the coolers, engine, oil, and PS.