safe water depth

Submitted: Friday, May 29, 2009 at 20:48
ThreadID: 69311 Views:2790 Replies:8 FollowUps:6
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can anyone give me a guide as to what depth of water I can safely tackle without any engine damage, creek/river crossings, in a petrol prado 2005
thankyou
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Reply By: Member - Greg T (ACT) - Friday, May 29, 2009 at 20:51

Friday, May 29, 2009 at 20:51
i would be staying way below the air intake level. but then you have the diff breather heights to think about
AnswerID: 367480

Reply By: CJ - Friday, May 29, 2009 at 20:54

Friday, May 29, 2009 at 20:54
I always say that if you can wade through up to knees in water it is ok to cross

You can go deeper but with preparation and experience ie a wade sheet (car bra) and constant speed pushing a bow wave in front of you keeping the engine bay dry

Without a snorkel I can go to willy depth, once did belly button

Oh and remember all of the above assumes slow flowing water

Cheers
AnswerID: 367484

Follow Up By: tim_c - Friday, May 29, 2009 at 21:07

Friday, May 29, 2009 at 21:07
And assumes a reasonable vehicle speed too (ie. less than 40km/h!)

I think Toyota advertise a wading depth of 600 or 700mm - it might be written in the owner's manual.
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Follow Up By: Member - Andrew (QLD) - Friday, May 29, 2009 at 23:44

Friday, May 29, 2009 at 23:44
what? Toyota don't advertise "willy depth"? LOL

Andrew
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Reply By: get outmore - Friday, May 29, 2009 at 21:00

Friday, May 29, 2009 at 21:00
top of the wheels without taking axtra precautions like extended breathers and snorkal/tarp

you can prob go a bit deeper but you will need to check/change oils when you can

dont forget as soon as your fan touches water it sprays the water all through the bay.

Ive seen a petrol cruiser stopped in a river a diesal freelander got through because of this
AnswerID: 367486

Follow Up By: Member - Footloose - Friday, May 29, 2009 at 22:30

Friday, May 29, 2009 at 22:30
Even a diesel's fan blades can be propelled forward into the radiator if precautions are not taken with crossing rivers.
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Follow Up By: get outmore - Saturday, May 30, 2009 at 01:39

Saturday, May 30, 2009 at 01:39
apparantly - never experienced it i think it was more of a 100 thing
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Follow Up By: pt_nomad - Saturday, May 30, 2009 at 05:08

Saturday, May 30, 2009 at 05:08
Any vehicle can protentially suffer this. If the water level in the engine bay rises, the cooling fan changes from being a an air fan to a boat propellor. AS the material of the fan is not that strong the fan blade deforms. The deformation causes the blade to bend forward and potentially strike the radiator.
Ideally the viscuss coupling is not engaged and the fan is not under power, the drive belt is removed ora wading curtin fitted and sufficient speed is maintained.

Water crossings:
* If your not confident, watch some people ( hole fully experienced with nouse)
* Walk the crossing checking for depth and large rocks. Nothing like a large rock to cause you to back off the throttle and loose your bow wave
*Ensure you have extended diff breathers - see Richie at hume off road.
*Buy a snorkel. They are cheap insuance, I have seen enough cars get into deep water unintentionally to know that you may have teh best intent but a little water in the air intake can cost you a whole lot of money.

Paul.
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Reply By: Member - Kroozer (WA) - Saturday, May 30, 2009 at 01:54

Saturday, May 30, 2009 at 01:54
I wouldnt advise of anything deeper then over the wheels.
AnswerID: 367523

Follow Up By: Member - Kroozer (WA) - Saturday, May 30, 2009 at 01:56

Saturday, May 30, 2009 at 01:56
Sorry but thats with a snorkel, without a snorkel then probably 400mm high. I wouldnt risk it unless you take some massive precautions.
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FollowupID: 635174

Reply By: Member - JohnR (Vic) - Saturday, May 30, 2009 at 06:39

Saturday, May 30, 2009 at 06:39
owt, it depends a bit on the approach angle and all that sort of thing too. The air intake is at the front and if you approach at a sharp angle off the bank and go in slowly, that air intake can be submerged before even your rear wheels get into the water.

I say this because there was a guy who has been an EO member and is often online here, who drowned his fourby that was without a snorkel. It was a petrol and so normally you can restart the motor after draining it, but in his case drowned the interior too so the car was written off. He had crossed the same piece of river only a short time earlier, but because of finding a locked gate, had to return the same way.

Walk before you try if you don't want to do your motor in.
Cheers,
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AnswerID: 367525

Reply By: Ozboc - Saturday, May 30, 2009 at 07:12

Saturday, May 30, 2009 at 07:12
For a toyota >? 2mm - a nissan on the other hand , Much deeper ....... ;)


Boc
AnswerID: 367529

Reply By: Member - Phil G (SA) - Saturday, May 30, 2009 at 08:11

Saturday, May 30, 2009 at 08:11
120series Petrol Prados can suck water when you trim the inside guard to fit a factory bullbar: Link Here!

Most LandCruisers had a wading depth of 700mm, but AFAIK Toyota never quoted a figure for the Prados.

Safe depth depends on other factors such as how you drive, fitting a blind whether you have extended breathers, snorkel, lift etc
AnswerID: 367538

Reply By: Member - Bucky, the "Mexican"- Sunday, May 31, 2009 at 04:44

Sunday, May 31, 2009 at 04:44
one way ticket

Another thing to consider, is just how much fuel is in your tank.

Air will act like bouancy, so make sure, if you go for the deep crossing that there is plenty of fuel in the tank, over 3/4 preferably.
Water speed must be taken into account, as if it comes on broadside (as in most cases) then you can be pushed sideways.

Cheers
Bucky
AnswerID: 367704

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