Ventilation/ demisting particularly in winter is a nightmare with my Coupe. When it's cold and raining I generally resort to driving with the side windows open significantly until the car is quite warm, to allow sufficient change of air. There does not seem to be any significant throughput normally in the car from my mini heater albeit uprated to a 3 speed fan taking air through the front bulkhead. Has anyone utilised the oval like slots above sill level behind each door to cut holes in the carpet, cover with a grille and thereby encorage better throughput. Or even a hole in the rear inspection cover. Opening the sun roof seems to result in positive pressure to the car interior and I was wondering whether the suggestions made might have the same effect, or even bring engine fumes into the car. Has anyone had similar problems and is there a solution yet?
Malc Jones member 181 Coupe

Not a problem I suffer from in the very wet north, my heater is fed from inside the front clam, on top of the bulkhead, with no sunroof.


Maybe some sort of scupper valve arrangement might work in the rear bulkhead, I know our tiptop has something similar in the back.

On my old Cox I had an intake on top of the left wing feeding a mini heater and drilled outlet holes in the rear screen to let the air out
Cheers
John