Agile off-road diff breather

[parb]

Anyone installed it yet?
I ordered a set, seems like it's a decent insurance against a problem I hope I will never have.

Any ideas on the longevity of the plastic hose is? Will it age and need to be replaced every so often like some plastics?

 

[INEOS OG]

Whether or not the factory differential bleeder valves wiill fail (or not) or cause the pinion seal to leak (or not) getting your differentials vented properly is a very good idea.

The only thing I don't like about the ARB system is that it routes to one location causing a long run of tubing from what presumably will be the rear dif to the engine compartment.

To answer your question, the tubing looks a lot like the polybutylene piping I've been using in my yard for over 30 years to water plants which has a life expectancy 50 years.

I am going to opt for something a bit less elegant in the form of 3/8 fuel line run vertically in to the engine compartment in front and to a high point on the body in the rear to avoid a run of tubing from the rear something like this.

Allstar Performance ALL36147 Allstar Performance Transmission Breather Kits | Summit Racing

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[Tazzieman]

Any ideas on the longevity of the plastic hose is? Will it age and need to be replaced every so often like some plastics?

In general (I haven't got the Agile product) the standard hard plastic hose is very resilient.
Not a diff breather , but the hard black plastic fuel injection lines have been spraying petrol into my 1978 911 since 1978.
They live in the engine bay and see sunlight through the engine lid. No cause for concern.
That said, any line under a 4x4 body gets regularly inspected by me for kinks and nicks.

 

[Greasemonkey]

This is my version of the diff. breather. I used a 6 mm compressed air hose, a compressed air distributor, 1/4 inch connections and 1/2 strainers. The holder consists of an old 50x50 mm aluminum sheet with 4 blind rivet nuts. This sheet metal was attached to the original fender screws. Both axle differentials and the transfer gearbox are connected. The fourth connection is for the ZF transmission, but I haven't made it yet, because it's difficult to get to.

 

[ORSO]

nice work.

do you have any photos of the transfercase connection?

 

[Greasemonkey]

See pictures

 

[Greasemonkey]

The breathers from the transfer case and the ZF transmission are directly behind the cylinder head above the clutch bell housing. Both hoses could be ripped out from below, but I didn't want to break anything, so I left them where they are. In order to access the ZF transmission connection, you would have to remove the front drive shaft. Even with an endoscope camera, it was difficult to get decent pictures of the route and connection of the hoses.

 

[Tazzieman]

The breathers from the transfer case and the ZF transmission are directly behind the cylinder head above the clutch bell housing. Both hoses could be ripped out from below, but I didn't want to break anything, so I left them where they are. In order to access the ZF transmission connection, you would have to remove the front drive shaft. Even with an endoscope camera, it was difficult to get decent pictures of the route and connection of the hoses.

How high are they off the ground?

 

[Greasemonkey]

The distribution strip for my breather is approx. 110 cm above the floor. It is attached to the bracket with 2 screws, which can be easily loosened. You can also easily loosen the individual hoses to blow them out with compressed air. I only used spring clamps for the hoses on the axles.

 

[Tazzieman]

What I meant was how high are factory breather holes on the T case and trans?
What chance of them being submerged?
My diff breathers are mounted on the fender like yours.

 

[ORSO]

great!

 

[Greasemonkey]

What I meant was how high are factory breather holes on the T case and trans?
What chance of them being submerged?
My diff breathers are mounted on the fender like yours.

I estimate that they are about 15 to 20 cm lower. Whether it is actually worth putting both gearbox vents at the top depends among other things, on how deep you want to go into the water. When I think of "Jeremy" and the YouTube films by Tom Sunderland and Ben Greggers, I will avoid deep water crossings in the future. I've made some deep water crossings in Land Rovers in the past and when I compare those crossings to the lives of a cat, I think I've used them all up.

 

[Tazzieman]

If it's not too cold to walk it, and you're of average height, the rule of thumb is don't go deeper than your nutsack. It's the best barometer of when to back off!

 

[TheDocAUS]

There is a lot of discussion concerning diff breathers here.

 

[Greasemonkey]

Two more pictures where the ZF transmission breather pipe are located

 

[Greasemonkey]

There is a lot of discussion concerning diff breathers here.

I know the discussion about the diff.breathers. Here in Germany you don't actually need them. But since I often drive to England, where even normal roads are sometimes flooded, it makes sense. I also noticed that the original breathers on the axles no longer work properly after just a year. I had the same experience as Aigle Off Road, that when you loosen the original breathers, air flows either in or out.

 

[Tom109]

@Greasemonkey - Is this the factory breather exit point, or your modified exit point?

 

[Greasemonkey]

These are the factory fit points. The breathers are deep behind the cylinder head. It took me a while to find them, because I had no idea what to look for. The picture below gives you a rough idea where to look for the breathers.

 

[Tom109]

These are the factory fit points. The breathers are deep behind the cylinder head. It took me a while to find them, because I had no idea what to look for. The picture below gives you a rough idea where to look for the breathers.

Thank you. I will check this location on my Gren.