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Old 01-08-2013, 08:27 AM   #1
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Water Crossing - Max Depth

In the manual it says that the JKU can handle a max water crossing depth of 76cm (at slow speed, forget the listed speed exactly). Is this realistic? Any gotchas / advice for water crossings in a JKU with no mods (ie: no snorkel)

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Old 01-08-2013, 08:38 AM   #2
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76cm or 30 inches is accurate.

Go SLOW. If you're pushing a large wave in front of the bumper/hood, where do you think that water is going to wash back to if you slow down suddenly or stop?

Is your JKU a standard? If so, avoid using the clutch when in deep water/mud.

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Old 01-08-2013, 09:13 AM   #3
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Originally Posted by Jag
76cm or 30 inches is accurate.

Go SLOW. If you're pushing a large wave in front of the bumper/hood, where do you think that water is going to wash back to if you slow down suddenly or stop?

Is your JKU a standard? If so, avoid using the clutch when in deep water/mud.
Thanks for the info mate. It's an Auto too btw.
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Old 01-08-2013, 09:21 AM   #4
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If your gonna do some water crossings I recommend this. Its easy and will save headache later!
http://www.wranglerforum.com/f33/ext...se-185089.html
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Old 01-08-2013, 10:08 AM   #5
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If your gonna do some water crossings I recommend this. Its easy and will save headache later!
http://www.wranglerforum.com/f33/ext...se-185089.html

+1 nice and easy "mod" to prevent a lot of future problems if you are water crossing
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Old 01-08-2013, 01:39 PM   #6
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Originally Posted by Jag View Post
76cm or 30 inches is accurate.

Go SLOW. If you're pushing a large wave in front of the bumper/hood, where do you think that water is going to wash back to if you slow down suddenly or stop?

Is your JKU a standard? If so, avoid using the clutch when in deep water/mud.
I have heard the bow wave is a good thing as it keeps the water level lower in the engine compartment. That does seem plausible.

Why avoid the clutch in deep water? I think a stall would be worse where you can suck water back into the exhaust.

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Old 01-08-2013, 01:46 PM   #7
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I have heard the bow wave is a good thing as it keeps the water level lower in the engine compartment. That does seem plausible.

Why avoid the clutch in deep water? I think a stall would be worse where you can suck water back into the exhaust.

NC
You'll contaminate the clutch. You'll probably want 4L for the torque anyway and at that point you can shift without the clutch.
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Old 01-08-2013, 01:52 PM   #8
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Yeah I went in over my front bumper last weekend. Had to take it with a little speed to get over the rocks on the others side. Sadly, I hit some bolder under the water and knocked my jeep out of gear and the wave came back and in (I had my driver's window down). Jeep seems fine but I'm still cleaning mud spray out of the interior. Def should have extended the breather hoses before hand. I hate shifting underwater.
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Old 01-08-2013, 05:05 PM   #9
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You'll contaminate the clutch. You'll probably want 4L for the torque anyway and at that point you can shift without the clutch.
This. It's a bit different with a manual. The important thing is extremely slow. If you do a water crossing like the Jeep commercial you'll hydro lock the engine.
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Old 01-08-2013, 08:19 PM   #10
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on our atv's we use one way valves at the ends of our hoses,would this work here as well??
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Old 01-08-2013, 09:00 PM   #11
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Quote:
Originally Posted by Jag View Post
76cm or 30 inches is accurate.

Go SLOW. If you're pushing a large wave in front of the bumper/hood, where do you think that water is going to wash back to if you slow down suddenly or stop?

Is your JKU a standard? If so, avoid using the clutch when in deep water/mud.
30 inches may only be for the 2013. I think earlier models were 20".
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Old 01-08-2013, 09:15 PM   #12
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I know of a few people who have hydrolocked vehicles, some from a bit of stupidity, others were careful when taller, better equipped vehicles threw a bow wave across their intakes. We have youtube videos of these antics. Most of the times people make it, but in some we open up the intakes to look for water in the plenum, pull plugs, cross our fingers, etc.

Even if you stay within seemingly safe bounds, realize that sitting in water and submerging your axle tubes, having a loose vent tube from articulation, muddy water in electronics -all this can have longer term consequences.

Have fun but limit your exposure.
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Old 01-08-2013, 09:23 PM   #13
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You'll contaminate the clutch. You'll probably want 4L for the torque anyway and at that point you can shift without the clutch.
Did you mean to say start without using the clutch?
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Old 01-08-2013, 09:34 PM   #14
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depth for a Jeep

25 to 30 inches unless a 2012 0r newer. Hydrolock and high compression is ultimate suicide; not worth it!!
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Old 01-09-2013, 01:20 AM   #15
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Did you mean to say start without using the clutch?
Nope. Of course you can do that as well, but you also don't need the clutch either. Whether that's some kind of side benefit or not I don't know, but I've done it and it works just fine. Slipped from 1st to neutral to 2nd like I had the clutch in.
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Old 01-17-2013, 09:17 AM   #16
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So if max depth is 76cm without a snorkel ..... what is max depth with one ?

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