Ventilation air filter

[Hans W]

Does anybody know of or has made a (dust)filter for the ventilation system?
I am thinking of something that drops in the duct from the wing top that is easily removed cleaned and refitted with out to much flow restriction.

[mike_ie]

I've seen a couple of twin snorkel defenders back home - one feeding through the wingtop to the engine on one side, another feeding through the opposite wingtop to the heater matrix. Precleaner on top would do what you need.

[justinc]

Haven't tried it out yet, but in the bulldust of the cape region I'd have to be using these in my 110 I reckon

Dust Masks Paper Disposable pk50 - Complete Cleaning Supplies Pty Ltd (http://www.completecleaning.com.au/dust-masks-paper-disposable-pk50/)

:wasntme:


JC

[Freestyler]

I am assuming you mean the air into the cab?? I have an 85 county which has the factory A/C unit under the bonnet. I made some ducting up and have a 200tdi snorkel feeding it. Uni filter make a foam pre filter that goes over the head of the snorkel, I just don't oil it up. I doesn't stop all of the dust be gete rid of a fair bit. Tim

[dmdigital]

I've been kicking around ideas for this and haven't come up with anything either. I was thinking of something that would be held in place by the screws of the intake cover but am concerned about how much it would take to clog it up.

[Tombie]

The twin snorkel method is the best...

I was going to do it to Lara, after seeing how successful the thing worked on a friends Deefer...

Never got around to it :D

Plus, working where I do, nothing is a comparable for dust :angel:

[Lorryman100]

Just a thought, how about fitting a snow cowl and placing a paper filter between the cowl and the grill on the wingtop? Another plus to this set up for me, without the paper filter fitted, is that it keeps the airbox dry and the drainage teets don't clog up with muck which used to cause a puddle in the passenger side once the airbox started to fill with water.

https://www.aulro.com/afvb/images/imported/2013/01/1465.jpg

https://www.aulro.com/afvb/images/imported/2013/01/1466.jpg

This pic shows the rubber gasket fitted to lift up the snow cover if you have chequer plate. I fitted it because I put in a cut down air filter paper element as an experiment which I then forgot about for about a year before I remembered about doing it. The results were a dirty filter and quite a bit of grit sitting on top of the filter.

https://www.aulro.com/afvb/images/imported/2013/01/1467.jpg

And what it was designed for.....

https://www.aulro.com/afvb/images/imported/2013/01/1468.jpg


Brian.

[Marty110]

Does anybody know of or has made a (dust)filter for the ventilation system?
I am thinking of something that drops in the duct from the wing top that is easily removed cleaned and refitted with out to much flow restriction.

This is how I did mine on the 300Tdi - I had a spare air ram top as I fitted a Donaldson pre-cleaner to the snorkel. In pic 1 you can see (just) a wire mesh to keep magpies out (yes - I hit a magpie right there) and behind it is a fine stainless mesh. For dusty conditions - pic 2 - I chucked a filter sock onto it. The bonus was that you get an air ram effect through the vents increasing flow and an extra bonus when fording - the water - bow wave - comes up over your guard you dont get it flow into the air box - mini snorkel. Hope that helps

p.s. I pinched the idea from Malcolm Douglas when he was driving Landies before Toyota got to him

[Chops]

I'm not sure which one of those two ideas I like best.

The "Snow cone" :) looks the goods for keeping water etc out.
But I quite like the look/idea of the "Forced air".

How much was the snow cover worth Brian?

[Lorryman100]

That snow cover I have fitted is the stainless steel, powder coated version from a German company called Entreq. You can get plastic ones for £35 from Mudstuff here in the UK. A few other companies stock them including the military surplus originals.

Defender Snow Cover (http://www.entreq.de/products/heating-and-ventilation/snow-cover/defender-snow-cover-395.html)

MUDSTUFF.CO.UK, Land Rover Defender Snow Cowl Cover (http://www.mudstuff.co.uk/Defender_Snow_Cowl_Cover.shtml)

Brian.

[JayBoRover]

I'm going to throw in one from left field, because I've been thinking about this a bit since my Puma filled up with red dust. Now this might not be an issue for other Defenders, as I only have the Puma to look at, but the join between the first section of air duct and the air box with the fan assembly has a gap I can easily poke my fingers through. There is a fairly open weave foam strip between them but it even doesn't touch the fan assembly housing by about 10mm for a decent length. I have noticed this gap also lets engine heat into the fresh air intakes and an exhaust leak or oil leak under the bonnet would be very unpleasant (maybe not so much the exhaust leak as the exhaust stuff is all on the drivers side).

I'll try and get some photo's together to further explain the issue, but I am pretty convinced this is the source of my dust and heat issue. Anyone else notice this?

[Chops]

Hmm interesting observation JB, I certainly haven't noticed it, but then I haven't spent any time under the bonnet.
As I'm going to clean it this week, (inside and out,,, ok maybe just inside ;)) but I'll have a bit of a gander at it.
Haven't really been in the position to get much dust in it, but the future will put us right in the zone. It's one of those precautionary jobs that need to be done.

[Hans W]

If that is the case it will not be easy to fix as you cannot get the duct out without disconnecting airco stuff and you cannot get the fan assembly out easy as well.
I have been trying to do so

Hans

[Hans W]

I was thinking along the same lines. Am not so worried about clogging up since it is only ventilation if it is easy accessible you can always quickly clean it out.The problem is to keep it in place as the opening in the wing top is smaller than the duct it needs to be deformable but stiff enough to stay in place and not be sucked in the duct as that widens out
Hans

[JayBoRover]

I agree it won't be easy to fix, Hans, as the two parts are quite separate at the join and it is quite difficult to get to most of it. You can really only see one edge and feel another, while the other two sides are well hidden. It almost needs a bellows type system that clips between them, but that would be impossible to do in-situ and I'm pretty sure I won't go to the extent of removing the two parts if that means degassing the aircon to get access, as I suspect.

It'll be a little while till I can lean over the guard to take a good peek, as I broke a rib on Boxing Day and am still pretty sore:(.

[flux]

I'll try and get some photo's together to further explain the issue, but I am pretty convinced this is the source of my dust and heat issue. Anyone else notice this?

Glad I read this thread so far... Exact same problem and I was going to see what the dealer had to say about it when it goes in next. I can get my fingers in the bottom of mine as you mentioned above, but from the top it looks sealed.

I'm also looking for a solution as per this thread. I did think something like those vacuum air filters that was the size of the standard top guard grill being cut to size and mounting under the plate.

[mike_ie]

I'm just curious, with all this focus on filtering the heater intake, how everybody plans to filter the air on the other thousand or so places that air and red dust gets into a defender? :)

[Chops]

Just as well I work at a silicone/silastic factory. I'm sure I can get enough to seal her up ;)

[n plus one]

I'm just curious, with all this focus on filtering the heater intake, how everybody plans to filter the air on the other thousand or so places that air and red dust gets into a defender? :)

Just run the fan on two or higher and NEVER on recirc - problem solved.