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deffysams



Member Since: 21 Feb 2022
Location: Munich
Posts: 4

Germany 
Cabin air filter
Hi all
Im currently developing a cabin air filter For the puma

Someone interested?
Post #943423 22nd Feb 2022 10:12am
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Co1



Member Since: 19 Aug 2018
Location: North Yorkshire
Posts: 3681

United Kingdom 2013 Defender 90 Puma 2.2 HT Loire Blue
Maybe, but would depend on ease of installation and air flow.
Post #943474 22nd Feb 2022 5:33pm
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deffysams



Member Since: 21 Feb 2022
Location: Munich
Posts: 4

Germany 
The filter would be located in the air duct from the fender to the fan Therfore this plastic thing needs to be Removed for installation and later removed. It’s a little frustrating but can be don in 10 minutes
Airflow didn’t change noticeably with mine
But the engine noise got quieter
Post #943476 22nd Feb 2022 5:47pm
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philippr86



Member Since: 08 Sep 2017
Location: Frankfurt
Posts: 23

Germany 
Hi deffysams,

sound very good. Have it on my list as well, but had too many other things on my list to tackle this project yet. Thought about using it in conjunction with a snowcowl in order to protect the filter from getting wet as much as possible…
Post #943673 24th Feb 2022 2:32pm
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Def90



Member Since: 17 Jan 2015
Location: Kent
Posts: 259

United Kingdom 2015 Defender 90 Puma 2.2 SW Corris Grey
Hi deffysams

Also would be interested but as Co1 said would be dependent on its ease of installation.

This is the only type of fix that I have seen so far that looks like it will work.

https://otc4x4.pl/products

You are still left with the poor fit and miss aliment issue of the plastic air intake duct and the heater blower motor unit.

One other issue you might find with RHD vehicles is the removal of the plastic air intake duct is not that easy as it is on a LHD!

Still would be interested to see what you come up with.
Post #943675 24th Feb 2022 3:01pm
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hank



Member Since: 12 Sep 2016
Location: South Wales
Posts: 2301

Wales 2007 Defender 110 Puma 2.4 DCPU Stornoway Grey
Nice idea! Look forward to seeing it develop > 110 XS Double Cab
Post #943678 24th Feb 2022 4:07pm
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macfrank



Member Since: 05 Nov 2015
Location: somewhere in the north
Posts: 1081

Germany 2015 Defender 110 Puma 2.2 SW Keswick Green
Ja Wink mee to!

I contemplated the oct4x4 solution but I'd rather like an "invisible" solution and no snow cowl.
But then how would the filter be protected from water? Confused
Post #943727 24th Feb 2022 9:00pm
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Ianh



Member Since: 17 Sep 2018
Location: Essex
Posts: 2031

United Kingdom 
I have an entreq snow cowl, stops detritus and water getting in BUT putting a filter there just won’t work given the poor duct mating between the subsequent ducting and the heater blower motor as that would bypass the filter as it sucks in air via the engine bay, which is downstream of the filter if fitted in the snow cowl. Now if you come up with a solution to fix that problem with an air tight solution between the wing and the blower motor, with the option of inserting a cabin filter(but not a requirement),that’s easy to install in a RHD then you are going to have a large market. Especially in hot climates as it will significantly improve the air-con performance.

Ps in my experience adding a snow cowl means you don’t get a natural flow of air into the cabin without the blower motor on unless you are travelling at >60mph
Post #943732 24th Feb 2022 9:54pm
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swt



Member Since: 24 Aug 2018
Location: Cumbria
Posts: 163

United Kingdom 2008 Defender 110 Puma 2.4 XS CSW Stornoway Grey
For various reasons I've long been interested in an air filter for the cabin intake. I didn't fancy the Devon4x4 one (https://www.devon4x4.com/d44-defender-cab-filter-black.html), partly due to styling and because it isn't compatible with a snow cowl, which I find useful.

Prompted by the discussion above, I've ordered the OTC4x4 effort. Their website, customer service and delivery were good. It arrived from Poland this morning. It's a solid piece of plastic, takes a cost-effective, standard filter, and has some well-illustrated instructions. Not that you need instructions for this, but a few suppliers of more complex items could take a leaf out of their book!

As Ianh says, there is a detectable reduction in cabin airflow when a snow cowl is fitted, and as he predicts, I'm anticipating that the restriction of the filter will cause worse airflow and/or drawing from the engine compartment round the shoddily-designed Puma intake/fan seal (although mine is not the worst example of this problem). Having tried it as is, I will then make the zip-tie mod between fan and intake duct, which is described elsewhere on this forum.

It's strange that no-one has ever come up with a complete solution for the cabin air intake. A few years back I fitted the Nakatanenga upgraded air intake, which I now use with a Nugget air box - the Naka kit included a replacement metal component and hose for the cabin intake, but this was only suitable for LHD vehicles, and the metal part that married with the fan box seemed quite heavy for its single fixing screw. Something along those lines, with a filter located under the bonnet or in the wing would seem ideal.
Post #944469 3rd Mar 2022 3:11pm
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Simon dlb



Member Since: 26 Mar 2022
Location: Nairobi
Posts: 12

Kenya 
Yes. I would defo be interested. Good luck!
Post #947160 27th Mar 2022 6:55am
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itsdashy



Member Since: 20 May 2021
Location: Reading
Posts: 72

United Kingdom 2012 Defender 90 Puma 2.2 PU Orkney Grey
Ianh wrote:
Ps in my experience adding a snow cowl means you don’t get a natural flow of air into the cabin without the blower motor on unless you are travelling at >60mph


Surely your window is open and right elbow out? Laughing
Post #947350 28th Mar 2022 8:47pm
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mptzs90



Member Since: 24 May 2024
Location: Kent
Posts: 13

 2015 Defender 90 Puma 2.2 XS CSW Corris Grey
Checking back in on this - any progress on the development? Also interested in experience with this (or any other) https://shop.otc4x4.eu/en/products/cabin-f...ack-9.html air filter? Goal being to reduce fumes/allergens from coming into the cabin on a puma. thanks!
Post #1048648 14th Oct 2024 3:16pm
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