I'm attempting to place a custom-cut-to-fit charcoal filter screen in the interior "recycle air mode" intake and see if that improves Air Scrubbing. Has anyone accomplished this by chance?☺
Inexpensive Cabin Air Filter (1 Viewer)
- Thread starter McDowra
- Start date
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Someone about ?8 years ago cut up his cowl area attempting
to add a place for a filter but I don't think it was ever finished.
Some modification that would allow a filter to slide in place just before (or after) the blower motor fan would be ideal.
Definitely post up your ideas.
to add a place for a filter but I don't think it was ever finished.
Some modification that would allow a filter to slide in place just before (or after) the blower motor fan would be ideal.
Definitely post up your ideas.
So....Here's what I did to Forge my idea from my RedNeck book of how too's:
- I located the A/C-cabin recycle inlet port under the Interior Dash Passenger, bottom-side.
- I bought an Auto Carbon Filter Pad "you cut to fit" from amazon.
- Measured a 5"L x 2.5"W piece to fit.
- Cut a few slivers of the Rough Side of 3M stick Velcro to outer border-frame the graded inlet-box side.
- Pressed firmly and set to cover it 100%
As basic as it is... It's holding very well and... It's what you'd call (reusable/replaceable) for the most part.☺
- I located the A/C-cabin recycle inlet port under the Interior Dash Passenger, bottom-side.
- I bought an Auto Carbon Filter Pad "you cut to fit" from amazon.
- Measured a 5"L x 2.5"W piece to fit.
- Cut a few slivers of the Rough Side of 3M stick Velcro to outer border-frame the graded inlet-box side.
- Pressed firmly and set to cover it 100%
As basic as it is... It's holding very well and... It's what you'd call (reusable/replaceable) for the most part.☺
Outsane
Supporting Vendor
I could print a plug for the A-pillar.... with a small hole for water seepage
Wouldn't this mod only be filtering the air as it gets sucked in from the cabin back into the blower (recirculate)? I believe the dust would be coming in from the other door that opens for fresh air, but I haven't looked too deeply into the air box on my 80 to know.
I'd be super interested to know what could come of that.☺ I'm always set to (Cabin Air) instead of outside air due to living in the High Desert near Edwards AFB.
That's my next step is to see how awful the inlet holes between the hood and the lower windshield area is to do that. This was a (I wonder if?) attempt. I havent seen anything else accept someone placed some kinda nylon cloth material there once.☻☼
Outsane
Supporting Vendor
I'll keep my eyes out for a fenderless 80..
So, I cut a bit too much out of that panel to find the intake duct. The intake ducking is raised above the horizontal sheet metal and has a bit of a lip to let water flow around it. I used a cutting wheel on a due grinder to trim it about 3/8” above the horizontal panel so the filter would fit.
I then used a piece of cardboard, tapped against the lip of the intake duct with a rubber hammer to get the outline shape into the cardboard. I cut out a bit of the cardboard to line it up. then dropped the filter on top of the cardboard While in place over the duct and traced it (to get the outer boundary).
I left a flange around the outside edge of the plate (about 3/8”) to seal it to the case around the filter.
the second piece is a box around the filter with a flange bent outside around the perimeter.
The lower piece was siliconed on, (heavy dose of silicone) and then the upper on top of it, I had to do two piece separately in order to fit it in.
I let the silicone cure for about 6 hours, and then ran a bead over any other spots where air could flow.
the filter drops in snug, I should have a ring to retain it but I don’t think it’s needed.
then a top plate to cap it off.
the filter was about $8 from the local parts place.
I then used a piece of cardboard, tapped against the lip of the intake duct with a rubber hammer to get the outline shape into the cardboard. I cut out a bit of the cardboard to line it up. then dropped the filter on top of the cardboard While in place over the duct and traced it (to get the outer boundary).
I left a flange around the outside edge of the plate (about 3/8”) to seal it to the case around the filter.
the second piece is a box around the filter with a flange bent outside around the perimeter.
The lower piece was siliconed on, (heavy dose of silicone) and then the upper on top of it, I had to do two piece separately in order to fit it in.
I let the silicone cure for about 6 hours, and then ran a bead over any other spots where air could flow.
the filter drops in snug, I should have a ring to retain it but I don’t think it’s needed.
then a top plate to cap it off.
the filter was about $8 from the local parts place.
I ran the fan a minute ago, I think there probably is a slight decrease in flow, I dunno maybe 5-10%.
I’ll take it though, decreasing the dust from dry gravel logging roads along the foothills should be worth it.
Ya I should have taken measurements, trying to move forward on a bunch of stuff in a short time so I can take it up north wednesday.
a slightly longer filter probably would flow better, but it’s gotta be narrow and not too deep to fit in the cavity.
I’ll take it though, decreasing the dust from dry gravel logging roads along the foothills should be worth it.
Ya I should have taken measurements, trying to move forward on a bunch of stuff in a short time so I can take it up north wednesday.
a slightly longer filter probably would flow better, but it’s gotta be narrow and not too deep to fit in the cavity.
any estimate on how deep and the widest across the opening? I've looked at hepa filters for vacuums also, but i think those are expecting a lot more suction.
If you put new foam on the recirc door it should keep most dirt out I would think. After years of use the foam gets brittle and doesn't seal well.
So when your HVAC is on "recirculate," it just pulls from the hole under the blower motor at the passenger's feet and the fresh air vents coming from the cowl are closed?
If so, that really simplifies things. My wife leaves the HVAC on recirculate pretty much all the time. The smell of any nearby diesel or older carbureted vehicle deeply offends her senses. She's got the worlds most sensitive nose.
If so, that really simplifies things. My wife leaves the HVAC on recirculate pretty much all the time. The smell of any nearby diesel or older carbureted vehicle deeply offends her senses. She's got the worlds most sensitive nose.
