Snorkles

**Four Boar** · 15th January 2008, 12:42 PM

Hi Landy Lovers,

I am really just after information to better me knowledge about snorkles.

What do they acually do?

I believe they are a source of air intake for when the rest of the vechiel is submerged.

But there are other things to consider after reading different posts on the forum such as the air filter gettin soggy, water getting into the engine (esp. deisel), fans and fan belts going like the clappers etc are there not?

With so many modles of snorkle facing forwards, wouldn't this just coolect a whole lot of crap bugs etc ?

Or do they have a filter aswell?
If so does it need cleaning/ to b replaced?

Any additional info much appriciated.

Kind Regards Four Boar.

**blitz** · 15th January 2008, 01:01 PM

G'day Four Boar
Snorkles do several things, by having the air intake outside of the engine bay it gets cooler air therefore a bit better bang for your buck.

It also has a very mild ram effect therefore more bang for your buck.

Obviously having the air intake up so high means that water cant get in as easily.

On the question of being a bug catcher - not really I change my filter when I think of it, and while yes there are bugs that get in there is not as bad you might think.

It probably gets a bit soggy in the rain but your filter has a drain hole at the bottom so it shouldnt get any more soggy than a normal one.

Finally yes you still need a filter as all the snorkle does is move the place of air intake from inside the engine bay to outside and higher up.

Hope that helps

Cheers Blythe

**spudboy** · 15th January 2008, 01:05 PM

The forward facing Safari snorkels have grooves for the water to run out of the head, so even in heavy rain at speed water just exits the back of the head - never even makes it into the "down-tube" part.

I just got a new Mantec snorkel for my 110 and this has slots in the bottom (instead of being forward facing) so there are other designs out there apart from Safari/AirTech

**mrapocalypse** · 15th January 2008, 03:40 PM

Good Post Four Boar.

I'm also interested in some of these issues. Wasn't there a debate re whether Snorkels were bad for Petrol motors etc... What are you running?

**Lucus** · 15th January 2008, 03:59 PM

My experience with a recently fitted lra snorkel

http://www.aulro.com/afvb/range-rove...periences.html

**Four Boar** · 15th January 2008, 05:12 PM

Originally Posted by mrapocalypse

Good Post Four Boar.

I'm also interested in some of these issues. Wasn't there a debate re whether Snorkels were bad for Petrol motors etc... What are you running?

I have a TDI.

I was on the forum in the Discos can swim section and a bloke pictured his
v8i Disco goin for it when non of the others would. Another bloke posted a coment on how his air filter would have been soaked/ soggy, but the LR kept on keepin on. So would the water still enter (eventually wreck) my engine even with a snorkle if the air filter gets soaked?

What does this mild RAM effect mean?

And what about the fans (belts) and water going up the exhaust?
Not to menchin any other factors that I don't know of?
I really am interested in this topic hence trying to absorb as much info as possible.

**BigJon** · 15th January 2008, 05:16 PM

Originally Posted by Four Boar

What does this mild RAM effect mean?

And what about the fans (belts) and water going up the exhaust?
Not to menchin any other factors that I don't know of?
I really am interested in this topic hence trying to absorb as much info as possible.

Air getting forced into the engine because of the motion of the vehicle through the air and the shape of the snorkle head.

There is a chance that the fan will be pulled into the radiator, but I don't think it is a common Tdi problem (moreso TD5).

If the engine is running, water won't go up the exhaust (too much exhaust gas coming out).

RonMcGr · 15th January 2008, 05:22 PM

Four Boar,

I have just ordered one from British 4WD, ($200 cheaper than local dealers).

I'm hoping to get more cooler air into the V8 when towing.
It may help a little :-)

Water crossings will be a plus, if I every have to!

Next step is a bigger exhaust with less retrictive mufflers.

Cheers

**Bulldog** · 15th January 2008, 07:34 PM

AFAIK the 'water up the exhaust' happens when you stall it with the exhaust pipe under water. Nothing to do with snorkels, but an important thing to know.

I'm interested in snorkel theory too at the moment. I have recently been informed that my air intake (RRC, carby) is right over the (hot) inlet manifold, and therefore probably not helping my hot running engine.

I am thinking about a DIY snorkel system using PVC plumbing pipe and just buying the top piece (i hear they're only $30 or so). Does anyone know what pipe size (diameter) they are?

**Blknight.aus** · 15th January 2008, 08:22 PM

so far everyone is on the right track..

the issue of snorkles not being any good for petrol engines is 2 fold. Primarily that electricry and water dont mix so well especially the HT side of the ignition so by the time your deep enough to need a snorkle your engine will have already stopped because of electical issues.

The secondary issue is only applicable to carbied engines and even then only some of them and that is the forced air induction issue. This can mess with the mix coming out of the carby and lead to bad running at speed. the solution to that is simple just turn the head of the snorkle around.

the precautions you can take to prevent your fan eating the radiator is to loosen off its drive belt, fit a viscous coupled fan or better pull the fan out totally and fit up electric fans with an off switch.

as already covered with regards to rain entering the snorkle new heads are designed to shed the water before it gets into the downpipe, but even then most engines have a small one way vacuator type valve at a low point in the system where the airspeed is lowered, or the air turns a corner and the water will gather there and drain out automatically when the engine shuts off or when the relative air pressures permit.

One more benifit of the snorkle is that it can free up space inside the engine bay by shifting the first leg of the air intake out of the engine bay and putting it outside the vehicle. A 93 v8 D1 is a good example of this, removing the airhorn on the front of the filter leaves enough room for a dual battery system.

Another yet unmentioned benifit of the snorkle is the fact that the air outside your engine bay and up at roof height is usually cleaner than the stuff in your engine bay when you're working off road or in convoy on gravel roads. However this benifit is not always as great as it might sound depending on how well your air inlet is set up.

hope thats helpful.

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