Europa-List: Radiator duct and cooling

[William Daniell <wdaniell.longport@gmail.com>]

I fitted my rad duct and the radiators and its all fine.   Cowling fits as
well..
However the roof of the duct is pretty much up against the firewall.  I am
assuming that i need to open the roof of the duct to provide an exit for
the air which comes in through the two round holes in the cowling.  Is this
correct?  Also I seem to remember that there is a ratio between inlet and
cooling air exhaust.  Can anyone enlighten me?
Thanks
Will