underbody scoop for mid engined car... worth it?
underbody scoop for mid engined car... worth it?
(OP)
Hi I have a toyota mr-s and am planning on a v6 turbo conversion. I am wanting to offset the rearward weight increase by mounting as many components as forward as possible. I am wanting to mount the intercooler laying flat in front of the engine with an underbody scoop collecting the air travelling under the car. Possibly a naca style intake design. My question is, is there enough airflow under the car to collect? The rest of the car will be quite basic in aero terms, with 100mm ground clearance and no major wings or splitters etc. Any info would be a great help. Thanks in advance.
Brad
Brad





RE: underbody scoop for mid engined car... worth it?
I don't think it is a terrible place to pick up the air from, aerodynamically, after all your choices at the rear of the car are pretty limited
Cheers
Greg Locock
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RE: underbody scoop for mid engined car... worth it?
RE: underbody scoop for mid engined car... worth it?
It is better to have enough ideas for some of them to be wrong, than to be always right by having no ideas at all.
RE: underbody scoop for mid engined car... worth it?
At first it is quite hard to design a proper NACA duct that would work well.
Also NACA ducts work with a turbulent flow, that is not very suitable for cooling an intercooler core IMHO.
As far as a raised scoop is much easier to design and have a bigger flow volume it looks like a better alternative. Furthermore it works well in front-engined cars.
However, both NACA and raised scoop will suffer from dirt in the middle engine layout car. Cleaning front-mount and side-mount intercoolers could be quite tricky sometimes, so you definitely won't like cleaning it underneath a car.
And finally for a proper cooling an intake area of the scoop should be around 1/4 of intercooler core area. That could decrease ground clearance dramatically.
If I were you I would think about using MR's side scoops (hope there is enough free space).