Raised Air Intake pre-filtering

[Andrew Kilby]

Allegedly I pick up my gren in the next few days with the cyclone gren precleaner fitted..

Looks ugly, but I hope it works.

 

[chrsbe]

Has anyone seen a Gred with the cyclonic filter? Anyone have that setup than can share a pic?

I have it but not mounted yet. A huge bucket.

 

[Krabby]

I have it but not mounted yet. A huge bucket.

Did it come with some kind of adapter or maybe a different upper pipe?

 

[Tom109]

It looks comically large.

So does the raised air intake.

 

[Bobby Mac]

Has anyone seen a Gred with the cyclonic filter? Anyone have that setup than can share a pic?

I have one on mine - probably the one DenisM saw - they are not pretty but form over function as they say, and I had to paint out the white logos/brand advertising which improved it a little. The upper section of the air intake pipe is changed so that it adapts from a ‘squareish’ section to round to accommodate the filter.
I had a glass bowl Donaldson on my old Defender which did a great job. It amazed me the amount of crap it collected.
One thing I would question with the Grenny is, if it is only a raised air intake and not a snorkel (not fully sealed in it’s entirety), then what’s to stop dust entering those unsealed areas? Anyone who’s been outback will know that dust will find it’s way into areas that water can’t

 

[trobex]

I wonder if you could just buy a cloth vacuum sock for a bin-style vac an air it straight over the inlet... 3x cable ties and you would be set! Or similar!! It would look pretty av but for those dusty laden runs.

 

[bigleonski]

It’s funny how snorkel socks seem to be all the rage at the moment. I’ve never used them and haven’t had issues with dust getting into the airbox past the filter. Just cleaned out the filter every second day and replace regularly.

I’d love some real world experience comparison of how dirty the filters are between a socked and unsocked snorkel on an identical trip. I mean every bit of protection is a good thing, but I’ve never thought it a mandatory purchase.

 

[TheDocAUS]

If you are cleaning the filter every second day, a sock is not needed. But I was tail-end Charlie through the Simpson Desert and the Donaldson filter, fitted to the Patrol, was a must have. It really helped keep the air filter clean.

 

[NQ94]

It’s funny how snorkel socks seem to be all the rage at the moment. I’ve never used them and haven’t had issues with dust getting into the airbox past the filter. Just cleaned out the filter every second day and replace regularly.

I’d love some real world experience comparison of how dirty the filters are between a socked and unsocked snorkel on an identical trip. I mean every bit of protection is a good thing, but I’ve never thought it a mandatory purchase.

Years ago before all the electronic engines came along I went to buy these socks from a workshop in Alice Springs for my Patrol. He refused to sell and didn't stock them because he had seen damaged engines. Mainly diesel overfueling and overheating because of excessive air intake restriction. Probably not so much a problem now because the computer controlled engine will reduce fuel with excessive air intake restriction. We see this happening at work with the old mechanical graders that will push large amounts of black smoke and overheat with blocked air filters while the new electronic graders will derate the engine. The biggest issue now is oil filled air filters drawing the oil onto the MAF sensors and causing faults.

 

[NQ94]

If you are cleaning the filter every second day, a sock is not needed. But I was tail-end Charlie through the Simpson Desert and the Donaldson filter, fitted to the Patrol, was a must have. It really helped keep the air filter clean.

Be careful cleaning air filters. Most people use excessive air pressure that can cause damage to the filter media that cannot be seen. An air filter works the best with some dust load because the larger pores in the filter media become blocked. The media does not have a uniform pore size unless it is a high quality very expensive type similar to Hepa filters. Excessive cleaning of the filter can lead to the filter to become less efficient and lets dust through. Most earthmoving machines have a secondary smaller safety air filter inside the larger main air filter something that no 4x4 has so cleaning the outer filters is very common but is only done 3 or 4 times prior to the filter being scrapped.
The very fine dust is also a health hazard, it can lead to silicosis so keep the kids away when cleaning air filters.

 

[DenisM]

Be careful cleaning air filters. Most people use excessive air pressure that can cause damage to the filter media that cannot be seen. An air filter works the best with some dust load because the larger pores in the filter media become blocked. The media does not have a uniform pore size unless it is a high quality very expensive type similar to Hepa filters. Excessive cleaning of the filter can lead to the filter to become less efficient and lets dust through. Most earthmoving machines have a secondary smaller safety air filter inside the larger main air filter something that no 4x4 has so cleaning the outer filters is very common but is only done 3 or 4 times prior to the filter being scrapped.
The very fine dust is also a health hazard, it can lead to silicosis so keep the kids away when cleaning air filters.

wise words!

 

[chrsbe]

Did it come with some kind of adapter or maybe a different upper pipe?

Yes there is a different upper section of the pipe. It is mounted to the a pillar. On top of this pipe the cross section is round. The filter slides over this tube and is clamped with band clamps.

 

[chrsbe]

It’s funny how snorkel socks seem to be all the rage at the moment. I’ve never used them and haven’t had issues with dust getting into the airbox past the filter. Just cleaned out the filter every second day and replace regularly.

I’d love some real world experience comparison of how dirty the filters are between a socked and unsocked snorkel on an identical trip. I mean every bit of protection is a good thing, but I’ve never thought it a mandatory purchase.

In north africa i have seen many locals using two layers of nylon stockings to hold off sand in stormy conditions.