Monday, Jun 11, 2007 at 09:07
Hi Herr Brush,
We had no problems in Sep '02 with our un-snorkelled Disco. (See here for a piccie.) But of course, conditions up there can change radically between seasons and with recent weather.
It's important to know exactly where your air inlet is and, if possible, re-route it to the highest position under the bonnet. (On the Disco, you can remove it from the original inner guard position and put it high up under the bonnet behind the LH headlamp, for example.) We also carry a temporary makeshift
snorkel that we've never needed: a metre or so of
pool vacuum hose, a rubber boot [
toilet cistern to pedestal boot (new, not used!)] to attach it to the air box inlet pipe, and a couple of hose clamps.
Another point I've seen many
snorkel-equipped vehicles miss is the air box (air filter housing) itself. Most have drains in the bottom, some with rubber boots of dubious efficiency which are supposed to let water drain out but not back in. If you happen to stop in deep water and the air box is not effectively sealed than no
snorkel is much good because the air box will fill-up through these drains. I prefer to seal them completely with silicone.
Other item to consider before deep wading:
. Are the gearbox/transfer case/front and rear diff breathers routed up to a high point (top of the firewall generally)? Does your vehicle have or need wading plugs under the engine or bell housing?
. Alternators and air-con compressors are not designed to run submerged, especially in dirty, silted water.
. Also, turbo diesels with mechanical injection pumps usually have a manifold pressure compensator (sometimes called an aneroid) on the injection pump. These have an air bleed hole under the diaphragm. In deep wading, this can go under and let water into the compensator unit - not good
Prepare
well and have fun. [Unlike the Jeep Grand Cherokee driver a day behind us on the OTL. He hydraulic-locked his lovely new V8 at the first crossing. Didn't have a clue where the intake was. After two days beside the road he and girlfriend were towed all the way to Siesia behind the
Bamaga mechanic's Tojo trayback, over the horrendous bypass roads. No air-con (windows down and drowning in dust), no power steering, no power brakes. Not much fun.]
AnswerID:
246020
Follow Up By: mrbasilbrush - Monday, Jun 11, 2007 at 09:20
Monday, Jun 11, 2007 at 09:20
Thanks for your pics Ian.
Yes I have diff breathers up high.
I know where my intake is so I should be OK.
I don`t have the fuel compensator on the pump so that is probably a plus.
cheers.
FollowupID:
506960