WK2 Snorkel

[fwdjeep]

Yes i want a snorkle
But want to see it in person
The photos are some times missleading
So i will put off my purchase untill i see some on other vehicles
Yes i want the best in operating terms but also one that looks good too

[Numb Thumbs]

Here are some comments from Michael at Airflow:

Here are some observations to considered.

Exterior or internal filters fitted to snorkels.
These filters are after market.
They interrupt the flow of air which has an overall detrimental effect to the out put as follows
A major decrease to separation that the air ram provides.
Therefore increasing the foreign-mater collected in the after market filter.
The over all airflow can decrease dramatically depending on the amount of contaminates in the filter.
If the local atmospheric condition are such that this type of filter is needed,
the right course of action is to fit a cyclone separator.
This will certainly reduce the flow but will protect the engine and give over all better performance.

The change of air direction needs to as much as possible be directed ( vectored ) to limit the turbulence and therefore the friction losses.
There are engineering and aerodynamic solutions to this to a point.

The major limiting factors:

People's perception of what they think it should be to be effective when the reality is vastly different. There are a number of brands that follow this model.

Type of Air Ram. Fashion has in a number of brands limited the ability of the snorkel to work correctly.
Aesthetic shape of the snorkel in relationship to the vehicle
Body shape and contour of the vehicle.
Obstacles in the location of the structure of the vehicle i.e.
Position of air cleaner
The position of the various structures and their orientation to the airflow.
The relationship of possible Air ram input to snorkel body , engine volume and destiny requirements.
Certain ratios need to be applied in order for the snorkel to do its job of providing increased performance in Fuel, engine emissions, torque, power, cooler air, separation of contaminates.


Atmospheric conditions do create a large number of possibilities.
The majority can be accommodated in a compromise of fashion and the physical requirements of an effective snorkel design

Hope this is useful

Kind regards Michael

Don t have Dyno data
It will be some time before we have this.
I have simulation data which has proved to be close to actual

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I have seen some very pretty snorkels, but I would go with a functional one every time.

Someone posted a photo a while back of one with air intake over the top of the windscreen - and a very small intake at that. The tube ran down the A pillar. Looked lovely - but it would channel the water straight into the intake.

Function over form every time for me.

Cheers
Numb Thumbs

[djsmiles]

Id like to see the simulated data at least. I doubt that a snorkel was developed without the usw of a dyno, and have before and after figures.

[Cherokee30D]

IMHO a Dyno cannot produce real life results of before and after snorkel fitment.
With Dyno testing, the airflow remains constant and at the same temperature.
In a real life situation, the flow of air increases with speed and the air temperature decreases.

My 2 cents worth.

Cheers, Craig

[Bomber]

Originally Posted by djsmiles

Forgive the noobish questions. But only new to the forum amd jeep world.

Michael = airflow
Stuart = merchison?

Yes

Yes

some more characters to get to 10

[bodgie]

Originally Posted by Cherokee30D

IMHO a Dyno cannot produce real life results of before and after snorkel fitment.
With Dyno testing, the airflow remains constant and at the same temperature.
In a real life situation, the flow of air increases with speed and the air temperature decreases.

Cheers, Craig

The only thing the dyno can't reproduce as far as I'm aware is the positive charge pressure the snorkel head is designed to produce.

You'll always see different results due to barometric, humidity or temperature changes but my understanding is these can be compensated for to a large degree.

If you put a snorkel on an engine and it produces less power and torque doesn't this indicate the design is flawed. If you do the same test over multiple days and weather conditions with similar results this would validate the dyne testing.

[djsmiles]

Well Airtec/TJM has a JGC now, and they are looking at releasing a bullbar and a snorkel early in the new year..