I've been cleaning my Cortina up for its 6 monthly roadworthy. See, no more black dulon!
vs 
Its been pretty easy going but for one thing.
I removed the plastic heater box to get to the firewall ledge. Some egg head had bogged up the ledge, removed the sealant, and made it look awfull. Soon, I found a small swimming pool area where about 335 mls of water sits when the car is parked. It's there because the old British Cortina pressing has to meet up with the Aussie Cortinas triangular chassis gusset, and water just banks up, and won't drain anywhere.


Normally, there is a mat of sound deading on all Cortinas to stop the awfull drone and form a cover to stop the ingress of water. Someone, maybee Land Transport, has been doing some rather invasive checks, and picked the sheet, revealing a few areas of grey zinc undercoat, and a few areas where rust was starting.
I want to isolate the existing rust, and then put a handfull of filler in there to stop the water ever getting in again. Anyone else done this on there Cortina?


Its been pretty easy going but for one thing.
I removed the plastic heater box to get to the firewall ledge. Some egg head had bogged up the ledge, removed the sealant, and made it look awfull. Soon, I found a small swimming pool area where about 335 mls of water sits when the car is parked. It's there because the old British Cortina pressing has to meet up with the Aussie Cortinas triangular chassis gusset, and water just banks up, and won't drain anywhere.


Normally, there is a mat of sound deading on all Cortinas to stop the awfull drone and form a cover to stop the ingress of water. Someone, maybee Land Transport, has been doing some rather invasive checks, and picked the sheet, revealing a few areas of grey zinc undercoat, and a few areas where rust was starting.
I want to isolate the existing rust, and then put a handfull of filler in there to stop the water ever getting in again. Anyone else done this on there Cortina?