When I first got mine on a run to Liverpool in very wet weather my feet were water cooled which was something my old Morgan never did. For some time I looked at the problem and came up with the idea that the drains from the heater box went down the back of the engine bulkhead i.e. inside the engine bay. There was no water getting in when parked so I wondered if there was a build up of air pressure against the bulkhead at speed. I got two pieces of suitable sized plastic hose, connected them to the drains and secured them just below the floor of the car with a mitred end facing backwards, never had a problem since.
regards

Last edited by Guten; 29/06/19 05:09 AM.

Simon
2002 4/4
1936 Austin 12 light 4 Ascot saloon
2023 AMG Mercedes C300e estate
2021 Audi A1 sport