GU Diff Breather Extensions
Submitted: Monday, Aug 22, 2005 at 21:02
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25798
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Pilbara Wayne
Hi All
I am looking for info on extending the rear diff breather in my GU wagon. What size pipe do I need and where can I source it from? Also what length will I need? The front diff, gearbox and transfer case all breathe right up high in the engine bay, can I tap into the line from the gearbox?
Thanks for your help!
Reply By: Member - Roachie (SA) - Monday, Aug 22, 2005 at 22:16
Monday, Aug 22, 2005 at 22:16
G'day Wayne,
I did
mine a few years ago using a kit put out by Pirahna. I did the front diff as
well, even though (as you said) it is already pretty high anyway.
The Pirahna kit included about 5 or 6 meters of rubber tubing and 2 sets of brass fittings and 2 blue coloured knobs which allow the tubing to breathe without allowing
water in.
I ran the tubing from the back diff, up to the chassis and along to the front and terminated both front and back breather tubes high up in the engine bay, near the firewall.
The tubing could have done with being slightly smaller diameter, but it came with crimp-type clamps which seem to do the job of sealing the end okay.
I think it would be too much hassle to try and tap into the gearbox or tranny case breather. Better off getting the right size hose and doing it right. Why not remove the hose that is there already and take that to a hose supplier so you get the right diameter (assuming you don't want to get the Pirahna kit of course).
If you do make up your own breather system, you might be able to just get the special "knobs" that allow it to breathe, but keep the
water out....they have a threaded end (1/8" BSP I think).
Good luck
Roachie
AnswerID:
126366
Follow Up By: Martyn (WA) - Monday, Aug 22, 2005 at 23:34
Monday, Aug 22, 2005 at 23:34
Roachie,
I did
mine with a home made kit, 1/8th I'm sure you are right, 1/4 tubing, I used some fuel filters for vents in the engine bay, I actually found one fuel filter with two entries on one side and one larger outlet on the other side. I didn't have any of the special blue "knobs" either. I found that you have to get some tubing with a slightly heavier duty wall otherwise it collapses and blocks when you use cable ties to fasten the tubing to whatever your fastening it to.
FollowupID:
381005
Reply By: BenSpoon - Tuesday, Aug 23, 2005 at 09:59
Tuesday, Aug 23, 2005 at 09:59
Like Martyn, I did
mine myself. I got 6m of pressurised fuel line from a roll at repco and a bunch of small diameter hose clamps (open sunday if you're in
karratha!). it may pay to even unscrew the breather barb from the rear axle and bring that in with you to make sure you get the right diameter fuel line. A couple of cheap fuel filters and you're sorted.
I put a loop in the rear line above the axle to allow for movement/articulation and ran the hose through the chassis to the engine bay. A few cable ties to hold the fuel filter openings away from any forward or rear splashing, and you're done. Job takes maybe an hour if you enjoy lying on the floor more than actually working.
I have been told that I could have tapped into the line from the gearbox, but I am still yet to find somewhere I could easily access it from to cut, install a t-piece and attach hose clamps. For the cost of a few extra $ and saving your time, it may pay just to run the extra line and not worry about having all the parts share the same breather.
AnswerID:
126409