914runner

There has been some recent interest in waterproofing. So I figured someone had to make a thread for it.

Lets make this a general "Go-To" thread for info on waterproofing. If you do research and stumble across a good site, post up the link.

If you make a mod that is waterproofing related, be sure to add it to this thread.

Any questions on waterproofing? Post them up!

Hopefully after awhile we will have tons of info for people looking to cross a 1' stream to a 4' river.

To start it out:

Differential breather extension:
Robinhood150 has a great write-up here for extending the rear diff breather on a 2nd gen 4Runner. It is also very much the same for a 3rd gen. 4Runner.

I have yet to come across a write-up for the front breather extension on a 2nd gen. I did it on my '91, so I guess I will have to do that write-up.

In my '91, I relocated the front and rear diff breathers to the engine bay. Most say this would be overkill, which it probably is. I wouldnt recomend doing this. I had planned on using my '91 for extreme offroading, but those plans didnt work out so this was a wasted effort to extend the rear all the way up there. Relocating it up to the filler neck is fine for almost everyone.

The front diff breather is already extended on the front of 3rd gen 4Runners. It is only relocated about halfway up the engine bay. Some have relocated it further, which may or may not be necessary depending on how deep of water you travel through.

In my '98 I plan to relocate the rear breather somewhere high in the rear cargo area. I also plan to relocate the front stock extended breather into the interior and route it up the A-pillar. I tend to be overkill on my mods, but then again, I hate changing fluids.



Theres a start to this thread!

914runner

Here is a thread on the Expedition Portal that talks about waterproofing.

http://expeditionportal.com/forum/sh...=waterproofing

4x4Lamm

One hint is to use Vasaline to treat your door seals and weather-stripping. This creates a more fit and somewhat stickey seal, allowing less water to seep in (works best for short crossings).

Lamm

gravityfrog

Something I saw in an aussie event is people running a bilge pump on the inside piped to the exterior. I thought that was pretty cool and would prevent shorted ECUs or fuse boxes inside, I went to Wal-Mart and looked and for under 30 bucks you can get a 12v one. This type of mod wouldn't keep water out, but it could probably stem the tide until such time that you could get out of the water.

914runner

I have read about doing this too, its a great idea! I would put one on the passenger side and one on the drivers side because the tranny hump is in the way to only have one pump.

Sonofmayhem

you can use a nissan extender, that fits directly in and then you just add hose... here is the # 38323-c6010, and i think its 7/32 hose.

914runner

Is this for the front breather extension on a 3rd gen?

Sonofmayhem

here you can read it. lol

http://toyota.off-road.com/toyota/ar....jsp?id=186211

bob200587

I remember someone showed me how they used Blue RVT seal on the distributor cap to keep it water tight. It does work, but it's not that important if other stuff isn't taken care of as well.

914runner

Oh I see what you mean, Toyota has a barb that will thread right in too.

914runner

Thats a great idea for those of you with the 3VZ-E or 22RE. I also had a dist. cover that came on my 3VZ-E from Toyota, which helps to keep water out.

ZeppFreak89

well you could get one of those new double sealed zip lock bags maybe? there suppose to be pretty well sealed? hahahaha

splntr

one thing that u find in houses that helps to waterproof wiring and isnt conductive is using regular silicone caulking. all u gotta do is fill the connectors with it and let it dry just make sure to form it in the connectors so u dont have air bubbles. if ur still paranoid u can get rubber electrical tape that works similair to that for wrapping connections. if all else fails dont find the water

Sonofmayhem

My dad did that with his old and my old 85 when he bought it new and that damn thing ran better than mine now w/ less miles, and it also looked cleaner. and we have done it to our f150.