John 37

I have been told the hatchback has an airflow problem into the TMIC. The theory is that at speed, the air rises over the bonnet and continues up over the intercooler scoop.
It sounds plausible but I wanted to see it. Not having my own wind tunnel, I mounted a vertical rod at the front of the bonnet and tied lengths of cotton to it.
Result is the theory is wrong. Air follows the curve of the bonnet in laminar flow into the scoop. In fact the opposite occurs. There's a compression effect as the air passes over the bonnet into the scoop.
I've got pics to show this and will upload later.

John 37

Don Clark

Well I'm glad you sorted that out.
Maybe you should add the details to your previous thread as well................
https://www.scoobynet.com/general-te...air-scoop.html

Jon T

What speed did you do the test at?

John 37

That was about 60mph. The airflow didn't seem to change characteristics with speed. At least it didn't up to 70mph and that's all I'm admitting too 😁

John 37

One problem. This computer numpty doesn't know how ☹

Jon T

I think what they refer to as intercooler choke happens at speed not the speed limit. Lol. try it at 120+ and the results might be different.

Don Clark

done.

Henrik

iTrader: (5)

Nice findings, John!

I love when someone actually tests something out rather than just relying on internet wisdom

John 37

Thanks
I should add I'm on an android phone. I could probably manage on a PC

John 37

If I do, I'm not admitting to it.