Thread: What you don't want to see after crossing nolans!

Originally Posted by roverrescue

[...]

Thinking silastic sealing ducting and dump valve will do as good a job asnugget kit and means access to IC hoses and alternator not hampered by 90mm hose

S

No doubt if you have a snorkel fitted for deep water work (as opposed to just raised intake to avoid dust etc) then full sealing at every joint to the airbox, airbox lid, and every joint to the intake manifold is needed. (Sealed to the point where blocking the top of the snorkel will stall the engine - I suppose)

The following advice would only apply when there is no snorkel in play and pushing the documented fording limits a bit to the point that a good solid splash may hit the standard air intake on the side of the fender:
- In this case (my opinion only) its better if the several joints in the stock intake ducting are left unsealed, specially all the water drain valves.
- Then the unsealed ducting acts like a drinking straw thats got a bunch of perforations in it (i.e. fails miserably at delivering liquid when you suck on it!).
- throw a bucket of water hard at the intake duct opening, with the engine running, and I bet the water wont get sucked into the airbox at all (the several other gaps in the ducting will suck air no problem when the proper opening is dunked.
- prove it to yourself with just a piece of A4 copier paper. Run the engine. Put the A4 flat across the air intake on the fender. There is barely enough "suck" there to hold the A4 from falling to the ground. Get someone to increase engine rpm. A bit more "suck" but hardly - neither the paper nor engine seem to be fussed at all.

Compare this to what will happen where you seal or replace the stock intake ducting so well that covering the stock air intake can stall the engine - if that setup then gets a bucket of water tossed at the open intake end, that water will be gulped in with a lot of force!.

I had a similar heart starter last year crossing Scrubby Creek on the Tele Track. Water was 1.4m deep and it's at least 50m across. My 2010 110 has stock suspension and a safari snorkel (which as tact says is really just a raised air intake and yes, every time I open drivers door the mirror gets knocked back by the snorkel) and I use a wading apron. Sally lost power 3/4 of the way across and chugged up the short steep climb out belching steam. I let her idle while we let the water drain out the doors, she ran rough for a few minutes but then just purred away as we set off again! I didn't even pull the cover off the airbox.
I also had a bit of trouble with water on the electrical plugs up on top of the engine/alternator so taped these up for and no probs for the rest of the run to Cape York. IMG_6487.jpg

Originally Posted by Colmoore

I had a similar heart starter last year crossing Scrubby Creek on the Tele Track. Water was 1.4m deep and it's at least 50m across. My 2010 110 has stock suspension and a safari snorkel (which as tact says is really just a raised air intake and yes, every time I open drivers door the mirror gets knocked back by the snorkel) and I use a wading apron. Sally lost power 3/4 of the way across and chugged up the short steep climb out belching steam. I let her idle while we let the water drain out the doors, she ran rough for a few minutes but then just purred away as we set off again! I didn't even pull the cover off the airbox.
I also had a bit of trouble with water on the electrical plugs up on top of the engine/alternator so taped these up for and no probs for the rest of the run to Cape York.

How did the camper cope with water that deep?

Col Moore
I'm back home now no further dramas so hopefully all okay
I too had a wading tarp on but thinking the water likely coming in through the guard

Seeing how much water mine spat out I'm glad I took the time to remove ducting and. Lean ZmAF & MAP

I reckon you must have been even closer still to a hydraulic event

I would suggest if you see steam shutying the engine down should be priority one

Scrubby was a muddy sloppy mess this year I'm glad my 130 drank the crystal clear nolans over scrubby!

The deepest crossing was actually a seasonal swamp before nolans
Although deeper I was able to build a bow wave and carry on
Nolans was a steep drop into windscreen deep hole, even with the blind the sudden dive obviously flooded the engine bay

Was a good early season run and the PDR is a super highway
Won't be long before it's black all the way!

S

Originally Posted by tact

No doubt if you have a snorkel fitted for deep water work (as opposed to just raised intake to avoid dust etc) then full sealing at every joint to the airbox, airbox lid, and every joint to the intake manifold is needed. (Sealed to the point where blocking the top of the snorkel will stall the engine - I suppose)

The following advice would only apply when there is no snorkel in play and pushing the documented fording limits a bit to the point that a good solid splash may hit the standard air intake on the side of the fender:
- In this case (my opinion only) its better if the several joints in the stock intake ducting are left unsealed, specially all the water drain valves.
- Then the unsealed ducting acts like a drinking straw thats got a bunch of perforations in it (i.e. fails miserably at delivering liquid when you suck on it!).
- throw a bucket of water hard at the intake duct opening, with the engine running, and I bet the water wont get sucked into the airbox at all (the several other gaps in the ducting will suck air no problem when the proper opening is dunked.
- prove it to yourself with just a piece of A4 copier paper. Run the engine. Put the A4 flat across the air intake on the fender. There is barely enough "suck" there to hold the A4 from falling to the ground. Get someone to increase engine rpm. A bit more "suck" but hardly - neither the paper nor engine seem to be fussed at all.

Compare this to what will happen where you seal or replace the stock intake ducting so well that covering the stock air intake can stall the engine - if that setup then gets a bucket of water tossed at the open intake end, that water will be gulped in with a lot of force!.

This was what led to the Donaldson precleaner on SWMBO's Wrangler. We were crossing the Macquarie river at about 30cm depth when a splash from the tyre dropping off a large rock hit the snorkel intake. The result was at least a cup of water in the airbox which had to be mopped out with a towel due to the duckbill being removed when the snorkel was fitted.
Regards,
Tote

Originally Posted by SeanMurr123

How did the camper cope with water that deep?

We dragged a 2015 Jayco swan around the country, so no camper in tow up the Tele thankfully!! I left the trailer in Weipa for the Cape run, we had enough kit on the roof to swag/camp, food and supplies & a fridge in the 110. I didn't want a Jayco fail to stop my fun; although I was quite surprised how well it stood up to the 42000km journey.
My wife wouldn't have done the trip with a proper camper nor would she tent it with 3 kids - it was a big compromise but one that made it possible.

Neil, the Safari Snorkel has drains around the neck to allow water that passes through the intake to drain away before going down the tube. These holes would prevent low pressure in the intake tube should the the mouth be blocked or hit wit a large volume of water, I would have thought.

Originally Posted by Colmoore

We dragged a 2015 Jayco swan around the country, so no camper in tow up the Tele thankfully!! I left the trailer in Weipa for the Cape run, we had enough kit on the roof to swag/camp, food and supplies & a fridge in the 110. I didn't want a Jayco fail to stop my fun; although I was quite surprised how well it stood up to the 42000km journey.
My wife wouldn't have done the trip with a proper camper nor would she tent it with 3 kids - it was a big compromise but one that made it possible.

We have a Swift (wouldn't get the wife away without it) and I have zero complaints. Have taken it some pretty hairy places and it's held up great! Never any dust inside, nothing has shaken loose, the only thing I'm not sure about is a deep water crossing with the door and fridge vents.


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