what are sum body kits that actually add down force, ive heard feed and re amemiya but what else, because ive heard alot of horrable storys about body kits flying of while driving and stock rx7s lifting into the air of course its not till 140+ but i was just intrested on any body kits that possitivley affect aerodynamics ?



just throw out their pple https://www.nopistons.com/forums/pub...O_DIR#>/ar.gif https://www.nopistons.com/forums/pub...O_DIR#>/ar.gif

A stock FD will do 160+ without any body enhancements.

front bumpers with a larger front spoiler and adjustable wings will create more downforce.... but side skirts dont do anything

sideskirts do the same things as rear air deflectors. they give the air a path to follow preventing turbulent air from getting under, and flipping or at least instabilitizing, the car.



kevin.

best way to improve aerodynamics is to create a panel that covers the whole bottom of your car.... no turbulance at the bottom= downforce yo



as per sinful7

this is absolutely correct...



by giving a correct path and non-disturbance corrected directed airway for the air that is coming through the front, you will be able to (theorectically) negate any lift force which is normally associated with interrogated fronts..



think of it more like...



if you ever put your hand out of a window at regular speed (ie 60mph+)

put your hand out, and turn it various angles.

then, try making your hand a V-ish structure (i.e. bending your hand, and moving your fingers..) you'll see how how the air moves... it moves the same way across surfaces on your car!

i thought about contracting someone to create an underbody cover (like the srt-10) out of cf. But i doubt its worth the trouble.. i guess we'll find out this summer at the track. :-D

right, but i was more specifically wondering about aftermarket kits, like i kno that Mazda Speed has been wind tunnel tested to perform at high speeds but i was wondering abotu any others that can maintain speeds of 140+ like cwest, feed, ings etc etc



thank you

where are you going to drive faster than 140 ?

I think that that's one of the shallowest arguments ever. Answer this question then, where are you going to drive 160, 190, 210, 230? Well? WHO CARES, cars do those speeds, it's not a question of doing it, it's a question of being able to do it. Who drives their FD's to top speeds on occasion, the answer is, very few people. But, the car can do 160 stock.



Veilside tests their kits in wind tunnels, and so does MazdaSpeed.



BTW Martin, your statement was incorrect. Putting an underbody panel to cover the whole underbody is not a good way to go. At higher speeds, it will act like a wing and can fly the car off the ground with the slightest change in elevation. Just look at LeMans cars, I'm sure they have some holes to prevent air from collecting under the pannel.