Outer Limits 4x4 Board

Hey all,

has anyone made their own diff breather extensions. Is it worth it? I want to extend my breather lines before the wet-weather kicks in, just need to know what parts are required. Is it worth extending transfer case and gearbox breathers aswell?

Cheers
Jayden

its worth doing the transfer aswell, i ran the hose from the rear diff along the chassis and put a t piece in line with the transfer and connect the transfer breather to that and then up in to the engine bay with a fuel filter on top, and run a seperate one from the front diff up with a fuel filter on it!
cheap hose from bunnings and some hose clamps! costs stuff all and if your gonna be doing alot of creek and boghole driving its a must

chop

with the cap on the breather at the moment, does that just unscrew or pull off? How did you connect the hose from there, did you use a BSP brass fitting or just fit the hose over the top and clamp it. Can you remember what size hosing you used aswell.

Sorry bout all the questions lol, just want to suss it all out before i do it.
Jayden

ah 12mm hose i think, cap pulls off. i've just put one on me zook, i did all 4 all the way along.the hose fits snug onto the diffs, box needs a clamp. and i have a 1l case in which had a smaller breather ,i needed 10mm for that, clamp it too.
all i need is a fuel filter big enough for the 12mm hose

The cap doesnt screw off they have to be prized off with a screwdriver!
Just stck standard garden hose, and clamped on. just a standard fuel filter with a clamp will close tight enough on it.

Chop

I use garden hose on diff breathers, has lasted 8 years on rear.
The front cracked once, but replacement lasted 4 years so far.
Its worth buying good quality, uv stable hose, as cheaper stuff stiffens and cracks more easily.
Standard garden hose is right size to fit over breather, and enuff room fer 2 clamps, extra security.

christover

garden hose it is! Thanks guys for your help, ill post pics up in the thread as i do it, so that others can use it as a guide for future reference.

Jayden

Yeah i used garden hose aswell! It only cost like $7 and you have alot left over if you need to replace one.

i started with garden hose, but it didn't last long before cracking.

Nipped into Pirtek and got some offcut hydraulic line to replace it, more wear resistant, oil resistant and heat resistant... at the right price!

Spock

Ive used pneamatic air line put together with quick connects from pirteck. A friend, (you could do it yourself if you have a tap set) tapped the original breather so that a swivel shoulder could be screwed in. (chrome) much more elegant then garden hose.

Hi mate,

Garden hose is a good cheap option. Better is air hose for your compressor etc. It doesnt kink and tends not to be as brittle and crack. I ripped the covers off my diff breathers and attached some hose to them with clamps and ran them up high into the engine bay.

Good luck,

U can also use fuel or auto tran hose aswell

Yep im another for garden hose. I havent found the gearbox breather yet, but i just ran a hose along the chasis rail and used T-pieces all along to tap into it from both diffs and transfer.
For the front diff, i used a 90deg fitting as with the movement of the front axle the hose would rub and kink with the engine mount. Worked out great.
Also with the transfer, you cant just shove a hose on the breather as the bit that sticks out that you clamp to is only about 3-4mm high, not enough to clamp the hose to. So i just pressed on a piece of copper pipe over that small adjutment so there was enough to clamp a hose to.

Garden hose, while cheap will not last long. The problem too is that you tend to forget about it until the diff starts making funny noises. Also, the bulk of the 12mm hose, especially around the front diff, makes it a real PITA to work with- it pretty puch has to be threaded up through the engine mount.

I like the sound of Muppet Man's solution.

I have also pulled the cap off, cut the barb that is sticking out at the groove where the cap was retained, and then tapped the barb with a 1/8" BSP tap. This fits perfectly, and then off the shelf fittings and fuel line can be used. Much neater, far less likely to get damaged and causes less clearance problems. fuel line will live forever in that application- gear oil will not kill it like PVC garden hose.

As for the transfer, the barb on the top, with the cap removed, is just long enough to push fuel hose iver than get a hose clamp around, but it is far from ideal. the barp itself is steel and is pressed in to the alloy transfer. If you press the steel barb out, the hole in the transfer is the cprrect tapping size for a 1/4" BSP fitting.

Obviously this is tough to do unless the diffs/transfer are out of the car, but if you have them out, it's worth doing right.

Steve.