DJTODD's Journal - 2012 370z Nismo

djtodd

For the aero nerds or anyone else who is curious...

Even with the wing, the nismo produces lift at stock height. Drag is pretty ugly too. Especially when you remove the oem exhaust.



The base and sport packages are much worse. Substantial lift at speed.
I don't have a pic, but after lowering an inch or so, the nismo does produce negative lift (downforce) and drag comes down a fair amount as well.


Here's a better render of what I'm shooting for.
Of course Its always much easier to design on paper, but I have the splitter, canards, hood, and wing pretty much done as shown. Working on the diffuser and undertray now.



Here's two studies of that design. The exhaust will exit near the rear axle, and be blown over the diffuser.





The major item that I am not taking into my studies is the pressure generated by the wheel/tire rotation.
Frankly I'm just not good enough at openfoam, although I am venting the front fenders and providing reliefs for the rear, so it shouldnt be too much of an overall impact.

At 120mph, this setup should produce well over 1000lbs of downforce with around ~230lbs of drag, depending on the rake of the car, splitter length, and wing angle

I made the front splitter with one set of slotted holes, so that I can adjust its length from 3-6". Simulations are all well and good, but this should help dial in the balance.



I also went with the Aeromotions wing. If you've never read up on them. Check it out. Their stuff is no joke.

This is the wing I went with.
Here's 900lbs of downforce visualized...


It's a beautiful piece.

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