I've been reading a lot about waterproofing to be able to handle deep water but have a question. first off, where are the stock breathers for the diffs? does the tranny have a breather? also, if you were to go that far to waterproof, would you need to move your exhaust up so that it doesnt suck up water if you have to reverse or antyhing? thanks

 

As far as I know the only things that need to be extended are the diff breathers. the front is usually already done from the factory. THe rear however is just a little cap right on the top of the diff housing.

I know on our Humvees the water fording (sp?) kits also extend the exhaust and air inlets. But those diesels engines are sealed and designed for it. I have seen a guy explode a flex-a-lite fan on a Chevy truck when the water got high enough inside the engine compartment. Not sure if it was already damaged but a couple of the blades nearly made their way through the hood. Kinda cool to see actually.

Even with ext'd diff breathers I would not go bombing through any deep water.

I have deep sixed my tail pipe under water but the key is to not stall it and have some rpms to keep pushing the water out. Reverse should not make any diff as long as it stays running.

 

I'm running a flex-a-lite fan on my 4runner and was worried about this....i put a switch in my cab that is connected to a relay that powers the fan. when the switch is closed, it disconnects the power to the fan and turns it off.

 

I think that is a very good idea. Those blades are sort of riveted on and that seems like a dangerous thing with H2O. Otherwise they are good fans. The one I saw was not electric though. It was on a fan clutch off the engine.

It just goes to reason that in deep water you have to be cool with electrical things getting wet. Some electrical things really don't like to get wet. I do not think I would go in water deeper than 30".

Another thing I have seen with deep water is cast iron exhaust manifolds cracking because they were cooled too quickly and broke due to a drastic temp change.