On Apr 14, 2013, at 11:47 AM, mark drillock <mdrillock@COX.NET> wrote:

All of the factory snorkel intakes pointed toward the rear of the
vehicle. I'm sure the main concern is water entry.

That sounds correct to me too, just based on what I've seen with my rig.
I sometimes get a wetness in the lower ducting when the van sits in the rain.
My snorkel is tightly tucked into the rear corner too, and the entire length
is connected with hose clamps, so very tightly sealed.

I'm considering cutting most of the opening face off to open it up more for more
air flow due to the increased motor size. I'll put plastic screen over the face with
silicone glue, and add a small "hood" that sits on the backside of the snorkel,
which faces forward, just to help keep water off the opening, yet not interfering
with air flow.

bob