Snorkels........................................................

Submitted: Monday, May 26, 2003 at 21:24
ThreadID: 5132 Views:2081 Replies:10 FollowUps:27
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A lot of people say that one of the reasons they buy a snorkel is to keep the dust intake down for their air filter. Everytime i have seen dust kicked up by anyone it seems to ploom up high into the sky like the massive cloud that it is. It starts at the ground and can be as high as multi story buildings. How is it that we can state something like " it helps the dust intake stay to a minimum"??.....
I have noticed that a standard GQ intake is behind a few objects but yet the snorkel is first in line for that yummy mouthful of engine destroying grit....
Can that 14 inches of unprotected extra height be inline with some sort of clean air stream??.....

The tall, short bald guy with long hair makes as much sense....

Please explain????????/_____________________________________________
Countin the days till July 5th. *Cape York Trip*
_____________________________________________
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Reply By: Dozer - Monday, May 26, 2003 at 21:42

Monday, May 26, 2003 at 21:42
Hi I will second that.
A few years ago, two cruisers went with me to Innamincka. One was a T/D 80 with std setup and the other was a 1hz diesel 80 with snorkel. The t/d 80 had half the dust on the filter than the snorkeled 1hz when we checked it. To be honest, there was a discrepancy. The 1hz had a air ram on it and the t/d had the original precleaner inside the guard, so if the snorkelled 1hz had a donnaldson precleaner on it, mayby there would have been a better comparison.
Andrew Wollongong
AnswerID: 21144

Follow Up By: Brian - Tuesday, May 27, 2003 at 09:18

Tuesday, May 27, 2003 at 09:18
You are to close to the vehicle in front park up wait 5 minutes and then carry on. not only is this better for the air cleaner it is also safer!
Brian
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Follow Up By: Dozer - Tuesday, May 27, 2003 at 10:32

Tuesday, May 27, 2003 at 10:32
Agree there Brian
Andrew
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Reply By: Kev - (Cairns,QLD) - Monday, May 26, 2003 at 22:09

Monday, May 26, 2003 at 22:09
Yep, the dust cloud is usally that big that i don't think it makes much difference.

I have wondered if turning the snorkle head around would make any difference (never tried it).
AnswerID: 21150

Follow Up By: Member - Martyn (WA) - Tuesday, May 27, 2003 at 14:18

Tuesday, May 27, 2003 at 14:18
I do this, it does make a difference albiet slight, the bug population certainly decreases, my prefered option is to stop have a coffee and set off 10 minutes later and use the radio for any communication if we are in a convoy. I find I become paranoid about the dust when travelling in convoy or passing an oncoming fourby, especially when on an extended trip. I carry four of the snorkle pre filters and change them depending on the sort of day I had in the dust. Washing them out in kero and re oiling them when I get a chance.Keep the shiny side up
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Follow Up By: crowe - Tuesday, May 27, 2003 at 15:32

Tuesday, May 27, 2003 at 15:32
Kev, ive tried it and i reckon it works well. I lose perhaps some of the ram effect associated with the snorkel but dust,bugs,leaves, etc is definitely lower. If going out with mates where the lead is alwyas cahging i turn it around, if going solo i leave it facing forward. The fine bulldust is what really clogs up my K&N filter, i notice a massive difference when i wash it out and re-oil after being in dusty situations for a few weeks.
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Follow Up By: Goona - Wednesday, May 28, 2003 at 18:04

Wednesday, May 28, 2003 at 18:04
on a recent trip to the Kimberley's we all turned our ram around and the fuel economy was severly affected to the tune of 3lt /100km. We quickly turned them back around and just washed them more regulary and economy was back to normal.
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Reply By: mik*2 - Monday, May 26, 2003 at 22:15

Monday, May 26, 2003 at 22:15
I think the snorkel is most effective for water crossings. Dust gets everywhere so whether the intake is up the top or in the engine bay, there is no difference. I reckon it all comes down to the quality of the aircleaner. Pre cleaners are the go.

cheers
mike
AnswerID: 21152

Reply By: Lockie - Monday, May 26, 2003 at 22:15

Monday, May 26, 2003 at 22:15
My understanding (and I may be way off base here) is that snorkels are for water crossings where river depth exceeds carby height.
AnswerID: 21153

Follow Up By: Voxson (Adelaide) - Monday, May 26, 2003 at 22:36

Monday, May 26, 2003 at 22:36
Hi lockie... Not so much carby height but more so the air intake height, which is normally around headlight height..._____________________________________________
Countin the days till July 5th. *Cape York Trip*
_____________________________________________
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FollowupID: 13699

Reply By: Member - Tony- Monday, May 26, 2003 at 22:48

Monday, May 26, 2003 at 22:48
Kev
On the side of the unit it says ram air and that is what it is designed to do ram air into the air cleaner, if you turned it around the engine has to draw air in. Not sure but would guess that there may be a vacuum around that area when reversed and may collect more dust. I run a ram air on the road and pre cleaner in the dust, has worked no problem to date.
CheersThe Ghost
AnswerID: 21161

Reply By: Slammin - Monday, May 26, 2003 at 23:17

Monday, May 26, 2003 at 23:17
If you are in a convoy or overtaking etc I do agree with you BUT when travelling alone the dirty air in the engine bay or as in my case the side panel of the Hilux it does make a huge difference.

I do a majority of dirt and bulldust and replace the air filter @ 50 000K (rec 100,000) regardless. At the 10,000 services always check airfilter and usually its just fine but pre snorkel it was always filthy and really needed to be cleaned every 5 000.

I only purchased the snorkel because of this and have only used the snorkel once for a water crossing, It was well over the bonnet and gee I wish I had a picky.

BTW I never realised that a replacement air filter was @ $60 and a foamy is around the same cost (wash, re-oil and recycle). I can do it the same time I do the motorbikes' and its more effective. Unifilter gets my dosh next time!

get out & dusty
AnswerID: 21166

Follow Up By: Member - Peter [SA] - Tuesday, May 27, 2003 at 13:41

Tuesday, May 27, 2003 at 13:41
Slammin, it is much easier to wash your standard filter out in water while you are away than to wash out an oily foam filter and re-oil it, just my thoughts anyway.
Cheers Peter
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FollowupID: 13748

Follow Up By: Truckster (Vic) - Tuesday, May 27, 2003 at 14:04

Tuesday, May 27, 2003 at 14:04
You do 50,000klms on an airfilter in Bulldust?

Christ!!!!

Mine usually last 1 weekend of Vic High country (well lately with the drought.)!!!! Thats not running a Precleaner.

With the Unifilter, YMMV but I have 4 that were given to me! And I dont think they are that much better... Quality doesnt seem as good as the bike ones, could be the size of filter and motor maybe?
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Follow Up By: Slammin - Tuesday, May 27, 2003 at 23:49

Tuesday, May 27, 2003 at 23:49
Pre-snorkel we had to air gun it every trip to town and back, good wash in water at 5000 replace at 10000, post-snorkel you give it the air gun and no sign of dust at all. The only dust we drive thru is the very rare oncoming. And thats no bulldust! We found the snorkel one of the best additions so far.

We were getting insects down the snorkel but put some fly screen at the mouth and rarely see some mashed bits when cleaning.

To save hassles when travelling I figure to carry a spare pre-oiled and fit at destination when servcing if need be, I can't really see it being necassary though. But same as on bike I guess, if you've gotta wash one you might as well wash the lot.

Ps how is the vic high country post bushfires, lots of bike tours on stand by.

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Reply By: Truckster (Vic) - Monday, May 26, 2003 at 23:36

Monday, May 26, 2003 at 23:36
If dust is that much of a problem you should drop back anyway.. If your right up someone elses ring, then you will get heaps of dust...

I know what your saying, but some fools say snorkels are for MORE POWER too.. Its like asking about tires, fridges, this that, everyone has a different reason..

For me its so I dont drink a engine full when going thru a river.. Not for no dust, thats utter bullshiat to me! As you say, dust rises, then hangs in the air. But if you drop back 20seconds+ from the car in front depending on the dust, then you should get clean air again..

Before people say to use the snorkel socks, they kill power, specially on Turbo cars.

YMMV
AnswerID: 21174

Follow Up By: Slammin - Monday, May 26, 2003 at 23:52

Monday, May 26, 2003 at 23:52
Out of interest what is a snorkel sock? sounds like a franger!

Also if you are following that close you'll end up in a head on. And we've had enough in the NT already and they'll put in more bloody speed restrictions because of dumb tourists.
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Follow Up By: Truckster (Vic) - Tuesday, May 27, 2003 at 00:04

Tuesday, May 27, 2003 at 00:04
Basically something you jam in the snorkel to stop crap gettin thru! Also stops air getting thru!
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FollowupID: 13712

Follow Up By: Kev - (Cairns,QLD) - Tuesday, May 27, 2003 at 08:56

Tuesday, May 27, 2003 at 08:56
Yes you have to be carefull of a head ons but if its a convoy then the first guy lets every one know behind via UHF that a car is coming.

Best to stay back away from the thick dust anyway.
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FollowupID: 13727

Follow Up By: Kev - (Cairns,QLD) - Tuesday, May 27, 2003 at 09:03

Tuesday, May 27, 2003 at 09:03
Hey Truckster,

You say the sock is no good, have you tried it or know someone who has ?
Is it realy that bad ?

Reason for asking is i was going to order one yesterday to try it out but forgot. The Unifilter guys say you loose 1% fuel economy but being sales reps its probebly more than that.

Its only $45 for three so i was going to give it a shot.

If they are no good what about the Finer filter snorkle head cover ?

Kev.
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FollowupID: 13728

Follow Up By: Dozer - Tuesday, May 27, 2003 at 10:35

Tuesday, May 27, 2003 at 10:35
Ive heard they get lost in the snorkel and when they get too dirty the whole show has to come off to retrieve it.
Andrew
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FollowupID: 13741

Follow Up By: Truckster (Vic) - Tuesday, May 27, 2003 at 13:59

Tuesday, May 27, 2003 at 13:59
Kev..

Yea know a few that used them on a Simpson trip on 3.0 GU's and 1 TD42 GQ from our club..

They work to a point, but do shag fuel economy. The blokes that did the Simpson, most actually tossed theirs! Well 2 of 5 cars did..

Do people have that much problem with normal paper air filters?? Mine work well! but then again I get mine at dealer cost, same as oil filters.
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Follow Up By: Member - Martyn (WA) - Tuesday, May 27, 2003 at 14:23

Tuesday, May 27, 2003 at 14:23
Truckster,
Keep the shiny side up
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Follow Up By: Member - Martyn (WA) - Tuesday, May 27, 2003 at 14:23

Tuesday, May 27, 2003 at 14:23
Truckster,
Keep the shiny side up
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FollowupID: 13762

Follow Up By: Member - Martyn (WA) - Tuesday, May 27, 2003 at 14:23

Tuesday, May 27, 2003 at 14:23
Truckster,
Keep the shiny side up
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FollowupID: 13763

Follow Up By: Member - Martyn (WA) - Tuesday, May 27, 2003 at 14:23

Tuesday, May 27, 2003 at 14:23
Truckster,
Keep the shiny side up
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FollowupID: 13764

Follow Up By: Member - Martyn (WA) - Tuesday, May 27, 2003 at 14:29

Tuesday, May 27, 2003 at 14:29
Truckster,
Sorry did it again, four for the price of one. I run a sock in the snorkle and I'v found that as long as I clean it regularly it's ok, I haven't noticed a noticable drop off in the fuel consumption or the power, mind you with the old 4.2 diesel noticing something I haven't got won't bother me. I still find the performance is better than normally aspirated but not quite at take off speed yet. I can see pros and cons for both. I've heard tales of loosing sock so I've tied a piece of thin fishing line around the rubber ring at the top of the sock just in case i don't fancy taking that little sucker off again. Keep the shiny side up
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FollowupID: 13767

Follow Up By: Truckster (Vic) - Tuesday, May 27, 2003 at 14:34

Tuesday, May 27, 2003 at 14:34
Did you sneeze as you hit the mouse button? ;)

Havent heard the losing it down the snorkel thing, but thats interesting! Another reason NOT to have 1, imagine it being chockablock full of crap and you cant get it out!!!!!!

No thanks...

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FollowupID: 13768

Follow Up By: Andrew - Tuesday, May 27, 2003 at 22:00

Tuesday, May 27, 2003 at 22:00
Truckster.....or someone

can you give me a run down on Pre cleaners ???

I have a Safari snorkel on GU. Where does the precleaner attach and how much $$$

thanks
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FollowupID: 13819

Follow Up By: Truckster (Vic) - Tuesday, May 27, 2003 at 22:04

Tuesday, May 27, 2003 at 22:04
Andrew./

the precleaner on a GQ is behind the left headlight, goes between the snorkel, and the air box

Some pics here
http://www.gqpatrol.com/pics/crapola/airbox/aircleaner.htm
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FollowupID: 13820

Reply By: Member - Roger - Tuesday, May 27, 2003 at 00:41

Tuesday, May 27, 2003 at 00:41
HI all,
Yes the snork is great for fording rivers as it helps prevent water intake. It also helps the engine get more air as needed by turbo's. However the drawback is dust, although as others have said it does not seem to really matter where the intake is it still gets in. You do not have to be following someone as the traffic coming the other way can give you a real dust up.
My observation is to check the air filter regularly and clean or replace as required.
CheersDodg
AnswerID: 21181

Reply By: Andrew - Tuesday, May 27, 2003 at 22:12

Tuesday, May 27, 2003 at 22:12
Truckster

Mines the 3.0TD

Didn't know it has two filters???

or is this an after market extra. You said the precleaner is behind the headlight and I have a filter there but I thought it was my only filter...

HELP
AnswerID: 21240

Follow Up By: Member - Martyn (WA) - Tuesday, May 27, 2003 at 22:32

Tuesday, May 27, 2003 at 22:32
Andrew,
It's the 4.2 GQ diesel that has the air precleaner behind the left hand headlight. I'm not sure about the 3.0 TD I'm sure it will be different. When I put the "snork" on I took the precleaner out and use a "snork" sock instead, cheaper and easier to clean. This is my thing, as you can see there are a lot of other opinions.Keep the shiny side up
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FollowupID: 13825

Follow Up By: Andrew - Tuesday, May 27, 2003 at 22:38

Tuesday, May 27, 2003 at 22:38
Thanks Martyn

That explains it. The 3.0 don't have the pre filter. I wonder why not??
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FollowupID: 13826

Follow Up By: John Boy - Wednesday, May 28, 2003 at 07:01

Wednesday, May 28, 2003 at 07:01
Andrew, Nissan got rid of the pre-cleaner as it restricts airflow and therefor reduces engine performance. In addition to this - if dirt particles are fine enough to get through the pre cleaner, the chances are that they can also get through the main air cleaner.
Nissan's pre cleaner was like another air-box with all of the associated bends and restrictions. A snorkle sock would probably give less restriction and do the same job - at least it can be removed for better airflow when it isn't dusty. Airflow is critical to the performance of a turbo diesel engine.
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FollowupID: 13841

Reply By: brian - Thursday, May 29, 2003 at 20:02

Thursday, May 29, 2003 at 20:02
why does air intake have to source air from outside the vehicle???cant the air come from inside the passenger compartment through the firewall into the filter then engine???? Just a thought.

AnswerID: 21409

Follow Up By: Bob Y. - Qld - Thursday, May 29, 2003 at 21:05

Thursday, May 29, 2003 at 21:05
Brian,

The noise would be why they don't do that. If you want to hear some intake roar, take a 79 series turbo for a run, and feed it some serious fat. Sounds like a jet. Hooroo...

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FollowupID: 13960

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