Sunday, Jun 28, 2009 at 09:41
A very good reply Terry and I agree with you 100%.
Now, having said that, there are a number of advantages to fitting a
snorkel over and above the wading height. Let's face it, no normal 4 wheel driver would be really comfortable driving through a river where the water is up over the bonnet. I've done it a few times and (to me) it is real "heart in the mouth" kind of stuff. I suppose if you're doing it all the time, then it becomes 2nd nature.
If you DO have to cross a river/creek which ends up being slightly deeper than you thought etc, then you're also going to have to make other provisions to guard against engine issues. The one that springs to mind is disabling the viscous fan so it doesn't become a propeller and force itself into the radiator. Or, you could make sure you fit a blind right across the front of the vehicle.
I have fitted snorkels to my last 3 Patrols, mainly for the dust issue and also because the air drawn into the engine is slightly cooler (so they tell me).
My current vehicle is a Patrol with a naturally aspirated 6.5 V8 Chev diesel. It drinks a LOT of air and I've just finished a project to remove the Safari
snorkel that was fitted and replaced it with a
home made 4" steel
snorkel with a much larger air ram on top and a much more direct path into the air box. The effect seems to have been as I desired, but I won't know for sure until I hook the camper trailer on and try the whole rig out under load.
I can't imagine owning a 4x4 that isn't fitted with a
snorkel. You may consider a
snorkel as "jewellery", but I certainly believe the benefits of the concept far outweighs the bling factor. It only has to save you ONCE for it to have paid for itself.
Don't forget that a river/creek that is nominally lower than the standard air intake of you 4x4, can still cause you grief. If the water depth is, say, 800mm and your intake is 1000mm, you may think you have 200mm to spare.
WRONG!!!!!! Once you enter the water and create a bow wave, that water (that was only up to your waste when you walked the crossing), could now be completely over your bonnet.
If more than about a cup-full of water passes your air filter element (they're not designed to stop the flow of water), then you WILL "hydraulic" your expensive diesel motor. THAT is when you'll be wishing you shelled-out the $500- or so to have a
snorkel fitted.
(BTW: The original poster mentioned a book by "Keith Moon"....... I think he meant Ron Moon).
Cheers
Roachie
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