Can someone please tell me what this box with a foam top is. Looks like some sort of emissions capture device - or not! The top filter part is badly deteriorating. Any direction on where to source the foam mat is appreciated. Does the unit need any routine servicing? Thanks. [align:left][/align]
Looks like a hear box to me. David if you run the heater fan at full with the engine off can you feel an air flow into the box? It is not a style I recognise but MMC used the sort of open cell foam sheet you get for aquarium filters. See here where there seems to be something similar https://www.gomog.com/allmorgan/CabinHeaters.html
JohnV6 2022 CX Plus Four 2025 Renault Scenic Alpine etech "Yvette"
Yes, John. My guess as well. Below is the photo with a easier orientation for you to recognize, with reference points. I also am adding a photo of what the car looked like originally.
However, as this cabin heater is a post-Smiths, so the bulkhead intake cover likely rusted out and some owner replaced it with something (very well and likely homemade). The original manufacturer,was a Pecks cabin heater and they went bankrupt. Sadly, many owners (1987-1993) were convinced to replace their Smiths with a Pecks which didn't turn out well for them but did for the Smiths crowd! That being said, earlier cabin heaters are a breeze (PUN!) to fix and even upgrade. The famous John Worrall used to sell a polished replacement. (also below)
Additionally, it looks like a non-original grid.
I don't use foam. One has two options to attempt to increase airflow. Either direct the incoming air from the louvres (and filter it) or leave it open. (shrug)
Thanks. Yes, I can confirm that with the heater on it does draw air through the box into the cabin. I’ll see if I can source a piece of dry cell foam from my local pet or home improvement store. Is there any service / cleaning of the box needed? It’s working fine so I’m inclined to leave it the way it is.