Diff Breather Material?

[EricG]

I've decided to extend my diff breathers this weekend. Looked in the FAQ and saw a recommendation for 25' of 1/4" low pressure fuel line. Stopped at Checker on the way home where they want $1.29/foot for it!

That seems a little unreasonable given the use - and they didn't have 25 feet anyway (do you really need that much!?).

So ... what else have people used? Should be pretty tough, oil resistant, somewhat heat resistant, and reasonably flexible to about -20F or so. Yea, I know - sounds alot like fuel line. Any other ideas?

 

[kup99]

I used vaccum line on my old rig.. seemed to work just fine, and is way cheaper!!

 

[IronYuppy]

Yup, Vacuum line works fine.

I ran an extender breather from the rear to the front, and an extended breather up from the front. They meet in a "T" right above the opening for the power antenna motor, and it took exactly 19'.

 

[aey_bee_see]

My design uses 10 feet of fuel line from the rear diff and connects to a T in the front diff breather. I then extend from the T a few feet of hose going up to the engine.

I don't know if this is as efficient a setup could be but definitely better than the replaced, original breather.

 

[dennisuello]

Check Lowe's or Home Depot, they carry several sizes of fuel tubing.

 

[cartercd]

If you aren't planning on submerging your rig past 3 feet, you can extend the rear differential breather up the fuel filler neck. This makes for less tubing and an easier install.

 

[-Spike-]

Pffft, I used clear vinyl braided tube. It's chemical resistant, flexible, and easy to see if crap is getting into it. And relatively cheap. FWIW, I use the same tube on a pressure pot I set up to fill diffs and trannies/t-cases. There's been gear oil in that line for years, sometimes under (low) pressure, and it still looks and performs like new.

-Spike