Gentlemen, I thought more about how to convert the existing cabin air filter system because the years have passed, i am not young and careless about health issues like before and allergies are getting worse in the environment we live in. This is the existing (factory) system that I have, from its grille air blows in and from below I have a sponge made of activated carbon, while below I added a layer of kitchen filter absorber to hold more particles and to better close the gaps on the sides.
The metal lip of the hood does NOT seal well, it is smaller in size than the sponge and does not touch it, so there is almost 2 cm empty space and the result is that odours from the engine pass through the sponge into the cabin.
I remind you that rain drops and also water from the car wash to some extent fall on the sponge, which however, dries out through the heat of the environment and from the heat of the engine.
Intermediate solution:
I put a piece of stainless steel mesh to hold leaf-insects but all the above still apply.
1st solution:
I go to a 3D printer, they make a "hat" for me, i.e. a rectangular parallelogram on top i fit a Filtron pollen filter for Skoda Felicia 1600 and an oval on the bottom to rest on the existing plastic frame.
Yes, the air will be filtered better by the sponge, but there is still the issue of the odours from the engine room hitting the pollen filter.
2nd solution:
Once again, I make a plastic frame with a 3D printer, I glue it back and as it comes down, it completely "closes" the lower structure, completely sealing it as we say:
the cabin will only get air from the environment but there is the issue of drying since the engine air will not catch it and I have to wait in a "natural way" for example the sun to dry the Filtron pollen filter.
3rd solution:
Again, I make a plastic frame with a 3D printer, I glue it back and as it goes down, it reaches evenly, it will barely touches the bottom construction, so:
the cabin will get enough air from the environment and a little bit from the engine, while the Filtron dust filter will dry a little naturally, but also at bit from the hot air of the engine.
4th solution:
Using a 3D printer, I make a plastic frame, glue it back and as it goes down, i bring it level with the surface barely touches the construction below, so:
the cabin will get enough air from the environment, the screen will keep the leaves-flyers but there will be a minimal space where the heat of the engine room will dry the fine filter which will be made of an kitchen absorbent filter.
5th solution:
With a 3D printer, I make a plastic frame, I glue it back and as it goes down, it completely "closes" the lower structure, completely sealing which will only consist of an absorber filter, so:
the cabin will only take in air from the environment and the kitchen absorbent filter will dry faster in a natural way, for example the sun, since it will be thinner.
@Papez @Thefeliciahacker @Raychev05 @Breezy_Pete @DeanVRS20VT or any other fine Gentleman who wants to help me i would love to hear your opinions.