feedback from use of Uniflter snorkel pre-cleaner

I get rid of the snake head on mine (got 2 in the shed now) and put up a donaldson type pre cleaner and spray the inside with the old spray oil and 90% of the dust doesn't make it to the filter but in really hard going areas you might have to clean it every 3 to 5 days. A rinse in soapy water and its all good. Got one on the cruiser at the moment (4.2 T/D) and dont notice any performance or economy difference although if you dont get the right size you can choke it but a call to donaldson can put you on the right track..

While i can not catagorically say i have had it happen, i know a mechanic asked me straight away if i had one fitted,, and the reasion was i was complaining of low power and had a snorkel fitted....im suggesting that if you took that filter out in the dust, it would quickly become very blocked and rip appart if not removed in time...the vacuum a diesel makes is powerful enough to rip skin from your hand if you place it over the end of the inlet pipe at idle....to stall the motor for instance.
All that aside, it is great you have gave us this followup info...
Andrew

Hi Tone,

I made up some filter socks about 1 meter long that are held in place with the head of the snorkel and sewn at the end and sewn part way up (500mm) creating three cylinders to catch the crap and allow the incoming air to exit down the snorkel. Soaked in Diff oil and used three over 5 weeks across the Simpson, outback SA (8000km) etc mostly following my brother in law. Results were really impressive. the crap that it caught was staggering and finer filter stayed clean. In fact I have just put the Finer filter back in its packet for next time. Not bad compared to my brother in law who stuffed a brand new filter between here and Ayers rock as he didn't have a snorkel. Anybody going on dirt roads without a snorkel for an extended period would be stupid IMHO.

We made up some fine material sheets that adhered to the outside of his filter from then on and just changed the filter material sheets. This worked a treat as well but more work in dissassembling air filter assembly and dust around the intake.

Wetfeet

A cyclonic pre-cleaner needs much less frequent cleaning but still separates out the fien dust and bugs so your paper element stays less obstructed.

They are standard on the Pajero DiD and V6.