water crossing
- Thread starter hepcat87
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Depends on how your seals look around the doors. Chances are, they will probably leak a little bit. How deep is it? I believe the manual says 24" is safe? You can go deeper than that, though. Just don't gun it and have water coming over your hood. You want a good, steady speed through the crossing.
Also, do you have your differentials, x-fer case breather extensions done?
Also, do you have your differentials, x-fer case breather extensions done?
shootmymime
New member
this last week missouri has had alot of rain from the stormes down south, and i got a lot of water in my driver side carpet, it was due to bad weather striping... so it is currently town down as i am typing this trying to dry....
i 2nt p nut Also, do you have your differentials, x-fer case breather extensions done?
i 2nt p nut Also, do you have your differentials, x-fer case breather extensions done?
4Evr4RunN3R
New member
Dont wanna seem stupid or take the spotlight away but what is this breather mod i hear about. if someone can explain it to me, that would be great 
shootmymime
New member
i have only read about the diff breather,
basicly it is a.... ohh hold on i know where i read it at, you just read it!!!
dang! my internet is not working!
go to google and type in ja 4runner
then click on the 1st one that comes up. look at ja's site and search on the screen for diff breather mod, and it shouuld be there under his 3rd gen! very easy!
basicly it is a.... ohh hold on i know where i read it at, you just read it!!!
dang! my internet is not working!
go to google and type in ja 4runner
then click on the 1st one that comes up. look at ja's site and search on the screen for diff breather mod, and it shouuld be there under his 3rd gen! very easy!
J.A.
Senior Member
Extended Rear Diff Breather Mod :hello:
MillerPKA
New member
As someone said on here, our 4runners are protected from water bodies up to 2 feet...stock, which I'm guessing you are. Again, keeping a constant speed will significantly reduce the amount of water seen by the engine bay, slow down and all that water will surge back in and possibly cause damage. read up on the rear diff definitely, just make sure all connections are treated with a sensor-safe silicon treatment. The rear diff with smart and steady driving will keep you ok
LINY4Runner
New member
THREAD RESURRECTION!!
I'm finally getting around to doing the rear diff breather, should I extend the front and x-fer case breathers higher in the engine bay while I'm at it?
I'm finally getting around to doing the rear diff breather, should I extend the front and x-fer case breathers higher in the engine bay while I'm at it?
LINY4Runner
New member
yeah they are way up there, especially after the lift...they're about just as high as the top of the tire, so just shy of 3 feet...that should be fine.
I'm also planning on constructing a stealth snorkel...saw a pic on YT...just gonna run PVC from the airbox into the cowl, hidden under the fender...I don't really plan on dunking up to my windshield so that'll suffice
I'm also planning on constructing a stealth snorkel...saw a pic on YT...just gonna run PVC from the airbox into the cowl, hidden under the fender...I don't really plan on dunking up to my windshield so that'll suffice
theizzardking
New member
yeah i was looking at that one as well, the deepest i even been was half way up the grill up the the windshield is a little to deep for my tastes
shawnstcyr
New member
seymourwaterz
New member
Got a link to the stealth snorkel? * Found it. Dont think i`ll be doing that. Guy hydrolocked his motor using it lol
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LINY4Runner
New member
yeah it was a 1st gen anyways, the structure under our fenders is way different
ARB it is...
ARB it is...
Mr. Leary
New member
If you know how to properly drive in a water crossing (See Bow Wave above), there should be no need to extend the breaters on your t-case and front diff. The purpose the breathers serve is to create a time lapse between when your diffs hit the water and start cooling down to when your breather gets dunked. When your t-case or diffs cool rapidly, such as in a water crossing, the breathers suck in air to equalize the internal pressure. If you go slowly into the water, your diffs will be equalized before the breather is under water. The rear diff breather is on the axle housing and needs to be moved if you plan on any significant water crossings.
As rdgt4r noted above, the bow wave is your friend. I have seen too many people freak out during crossings and speed up, only to have one of the following things happen: A. Hydro-Lock the engine, B. Destroy a diff or t-case due to water ingress, C. Break the fan blades in the engine compartment.
These things are all bad, m-kay.
I can always tell how experienced for knowledgeable a person is by how they approach a water crossing. The folks that make the huge splashes at 40 mph deserve whatever mechanical problems they create.
The people who take time to investigate currents and depth, approach slowly, and maintain thier bow wave rarely get stuck and usually come out the other side none the worse for wear.
Advice. Proceed slowly through a water crossing. Do not shift while the transmission is submerged. Keep it in L or 1st gear. You should find the perfect speed that keeps the wave just in front of your front bumper, which will create a trough behind it that will reduce the water level in your engine compartment and will help propel your vehicle along slowly through the water, so if you bog down a little, the force behind the wave might give you just enough push so you don't get stuck.
The problem I have is my 4Runner is too water tight. I have been through crossings where no water leaked in and at around 4 feet deep, the rear end felt like it was trying to float. Water coming in means your truck doesn't float away. If you are worried about getting water in your ride, don't cross a river. The tops of the wheels is generally accepted as the safe wading level for most vehicles. Going in deeper will require modification and preparation.
Hope this helps.
DewRunner
New member
Internal or stealth snorkel
http://www.toyota-4runner.org/3rd-gen-t4rs/53818-snorkel-cost.html
works great, i did plug the drain holes in the bottom of the air box too. i was having to many problems just driving around town with my front bumper being so small and liners, and things trimmed. so i had to do something, and i have front and rear breathers extended too, ive been up to the rocker panels almost the doors, and with the lift and 255's "33's" thats pretty deep. same puddle who shut off my buddies danger ranger, he was going to fast. i crawled right threw.
http://www.toyota-4runner.org/3rd-gen-t4rs/53818-snorkel-cost.html
works great, i did plug the drain holes in the bottom of the air box too. i was having to many problems just driving around town with my front bumper being so small and liners, and things trimmed. so i had to do something, and i have front and rear breathers extended too, ive been up to the rocker panels almost the doors, and with the lift and 255's "33's" thats pretty deep. same puddle who shut off my buddies danger ranger, he was going to fast. i crawled right threw.
