Never thought of the gorse, never really had that problem :)
If you dont have a valved water trap, I can see why.
Still annoys me
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I've never used the truck to bulldoze through gorse or broom, but I can see your idea has it's merits. ;)
This off the Airflow site.....
In the case of the air ram being turned away from the direction of travel the result is lessening of the positive pressure that is desirable. In the extreme, a vacuum is caused (i.e. turning the air ram backwards which may cause engine damage and should only be used over short distances).
This off the Donaldson site....
All Air Ram inlet hoods MUST be installed with the screen facing forward to ensure best performance.
Airflow restriction will not be reduced if the Air Ram faces sideways; but if it faces backwards, restriction does increase and adversely affects engine performance.
But then this off the Safari site....
By rotating the air ram to face away from the prevailing wind/direction of motion, the air ram delivers additional protection from the choking effects of snow build-up inside the air intake.
Yep spin back round when ya take ya hubs out to go back on seal.
Not much ram affect in low second anyway.:D