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Cetane



Member Since: 27 Nov 2012
Location: Lancashire
Posts: 171

United Kingdom 2010 Defender 110 Puma 2.4 HT Galway Green
Snorkel Pre-Filters
Hey guys.

Just canvasing opinion on pre-filters. Looks like people are using Donaldson ones. Those with them fitted I'm curious to know which one you have and how you get on with them.

Cheers
Cetane
Post #714246 24th Jun 2018 7:40pm
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Bluest



Member Since: 23 Apr 2016
Location: Lancashire
Posts: 4209

United Kingdom 2007 Defender 110 Puma 2.4 XS CSW Java Black
Just resurrected this, as I’m thinking about one if they are effective. Dust in Morocco was horrendous last time.

I saw this video on YouTube recently  2007 110 TDCi Station Wagon XS
Post #733689 8th Oct 2018 7:21pm
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blackwolf



Member Since: 03 Nov 2009
Location: South West England
Posts: 17372

United Kingdom 2007 Defender 110 Puma 2.4 DCPU Stornoway Grey
^^^ That's exactly what's at the top of mine.
Post #733697 8th Oct 2018 7:38pm
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Bluest



Member Since: 23 Apr 2016
Location: Lancashire
Posts: 4209

United Kingdom 2007 Defender 110 Puma 2.4 XS CSW Java Black
Does it work? Been anywhere dusty? 2007 110 TDCi Station Wagon XS
Post #733698 8th Oct 2018 7:39pm
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leeds



Member Since: 28 Dec 2009
Location: West Yorkshire
Posts: 8581

United Kingdom 
Pre filters do work.

Simplest prefilter? Well at the risk of being declared non PC nylon stockings/ tights be they yours, your partner/wife/husband/mother/father/etc.

Yes the finest denier tights over the snorkel works fine.

ARB used to do a pre filter sock which was at the top of the down pipe. So a good prefilter works and helps to keep main filter cleaner.

If driving in convoy in dusty conditions drop back so you are in clean air. That might mean a couple of hundred metres + between vehicles.


Brendan
Post #733705 8th Oct 2018 7:59pm
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blackwolf



Member Since: 03 Nov 2009
Location: South West England
Posts: 17372

United Kingdom 2007 Defender 110 Puma 2.4 DCPU Stornoway Grey
It works extremely well and even in normal use collects far more crud that you expect, all of which would otherwise end up in the air filter. It also ensures that moisture doesn't get into the filter and allows the safe removal of the unsatisfactory and restrictive factory centrifugal separator.

Landrovers have always had centrifugal prefilters if some kind, there is a reason for this and I would not be without one. A centrifugal prefilter will remove far more crud and be far less restrictive than a gauze or mesh filter (and the latter will do nothing to remove water, of course).
Post #733775 9th Oct 2018 9:23am
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geobloke



Member Since: 06 Nov 2012
Location: Nottinghamshire
Posts: 4410

United Kingdom 
leeds wrote:
Pre filters do work.

Simplest prefilter? Well at the risk of being declared non PC nylon stockings/ tights be they yours, your partner/wife/husband/mother/father/etc.

Yes the finest denier tights over the snorkel works fine.

ARB used to do a pre filter sock which was at the top of the down pipe. So a good prefilter works and helps to keep main filter cleaner.

If driving in convoy in dusty conditions drop back so you are in clean air. That might mean a couple of hundred metres + between vehicles.


Brendan


Such a great and cheap way to filter out the BIG stuff. These photos were taken after just 2 hours driving. It was amazing how many bugs were caught in the tights.



Click image to enlarge






Click image to enlarge



Post #733803 9th Oct 2018 10:58am
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