Feature Car: Edik Stepanyan’s DA-Chassis Acura Integra

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Edik Stepanyan DA Integra
The wheels of choice on Edik's DA Integra are the 5Zigen FN01R-Cs in a 16X7 configuration. These wheels weigh in at 15 lbs each! I Wish more wheels had been that light when I was a mechanic.
Edik Stepanyan DA Integra
The tires are Hankook Ventus C51 Semi-Slicks. These are a DOT Competition tire and Edik uses the 245/45ZR16 sizes. Many racers feel that the combination of light weight, brave driver, and a 245 width tire are the secret to Edik's speed. That may be true, but to drive flat out requires some bravery coupled with a lot of skill, too.
Edik Stepanyan DA Integra
I was also told by those same drivers that his aero package is another secret. Well, allow me to let you in on that secret. The first are the aerodynamic mirrors that attach to the roll cage.
Edik Stepanyan DA Integra
Simplicity is the key in a successful race car. You don't get much simpler than particle board, angle iron, bolts, nuts and fender washers! Sheet metal and “L” brackets make up the air dam portion of the front aerodynamics.
Edik Stepanyan DA Integra
Rear aerodynamics are handled by this simple wing which Edik made. It uses a Gurney flap, carbon fiber end plates, and small adjustable rod ends to change the angle of the wing. That's it, there is no flat bottom, no diffuser, not even side skirts, save for what came OEM. The body is all OEM sheet metal, which Edik is very proud of because it means that he does not rely on aerodynamics to have a good handling race car, just a good setup with minimum aero.
Edik Stepanyan DA Integra
The only other parts that are not OEM body besides the aerodynamics and deleted headlights are the windows, which are FAL Polycarbonate replacements…
Edik Stepanyan DA Integra
… and this duct on the hood. It is what allows the hot air from the engine bay and the radiator to flow out. If you recall, the radiator has no fans. Instead, it is using the airflow to push the air through the radiator. Now, this can be made efficient by creating a small hole for the air to go through at the front end and a larger hole aft of the radiator, which creates a pressure differential between the two allowing air to flow through at a pretty high rate. It's almost a vacuum effect, as I understand it from a local carbon fiber guy I know, but that's not an accurate description, either. I also think this is not quite what Edik is trying to accomplish, but it's a close enough reason to explain why he doesn't have to run fans. That and there really isn't space for them.

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