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Cetane

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

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

24th Jun 2018 8:40pm

Bluest

Member Since: 23 Apr 2016
Location: Lancashire
Posts: 3997

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

8th Oct 2018 8:21pm

blackwolf

Member Since: 03 Nov 2009
Location: South West England
Posts: 16892

2007 Defender 110 Puma 2.4 DCPU Stornoway Grey

^^^ That's exactly what's at the top of mine.

8th Oct 2018 8:38pm

Bluest

Member Since: 23 Apr 2016
Location: Lancashire
Posts: 3997

Does it work? Been anywhere dusty? 2007 110 TDCi Station Wagon XS

8th Oct 2018 8:39pm

leeds

Member Since: 28 Dec 2009
Location: West Yorkshire
Posts: 8578

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

8th Oct 2018 8:59pm

blackwolf

Member Since: 03 Nov 2009
Location: South West England
Posts: 16892

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).

9th Oct 2018 10:23am

geobloke

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

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

9th Oct 2018 11:58am

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