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Off-RoadingDiscussions specifically related to modifying and driving your Toyota truck/SUV off the pavement, including trip reports.
This is a discussion thread titled "Rear axle breather mod", within the Off-Roading forum, part of the General Forums category.
Ordered my "union" today. Of course, it was not in stock but I will get it Monday. Must be in huge demand not to have one in stock(sarcasm). Only cost $2.38. Then I went to Ace Hardware & rented a carpet cleaning machine for my wife. (You didn't think I was going to clean the carpets myself, did you)? I also asked about some 7/32nd" hose but they did not have any.
Question:Can I use quarter inch? I took a 2" piece of 1/4" that the guy cut from the roll so I could try it out.(Cudos to Ace Hardware for the magnanamous offer. Sorry, can't help myself. I'm bad to the bone). A hose clamp goes on anyway, right? How much will I need? The 1/4" cost 0.49 cents a foot. I'm not made of money, you know.
im not certain, but im pretty sure i used 1/4" fuel line...actually im fairly certain thats what i used
__________________ 2006 Chevy Silverado 4wd 5.3 4.10 gears - Dual flowmaster 40's out back exiting at the sides
- Blackbear 87 octane tune (good for 25hp and its amazing, no more torque management)
- LT headers 14.41 @98mph
A REAL truck.
im not certain, but im pretty sure i used 1/4" fuel line...actually im fairly certain thats what i used
Thanks. I shouldn't have put it off so long. How did you get the oem breather cap off? I tried a 13mm & a 14mm(sae did not fit at all) long socket but they both slipped. I quit before I rounded them off. I'll probably buy some of those wrenches that tighten on stripped bolts if I can't get them off any normal way.
i used a 13mm or 14mm whatever it is, wrench. came right off for me.
__________________ 2006 Chevy Silverado 4wd 5.3 4.10 gears - Dual flowmaster 40's out back exiting at the sides
- Blackbear 87 octane tune (good for 25hp and its amazing, no more torque management)
- LT headers 14.41 @98mph
A REAL truck.
We had Thur. & Fri. off this week & I figured on doing the mod one of those days. Well, it started raining Monday and has not let up since. It stopped long enough to throw down a rug & determine the breather is 14mm & it came loose with just an open end wrench. But the driveway is too wet to work. I just woke up. It's Sat morning, 4:12 a.m. & the rain is still coming down. The streets are flooded, my wife wants the Tundra today & I have to take the Accord out to the airport & pick up my daughter & her friend. Then we all get ready to go to a wedding. I have to escape the wedding in time for the FL-LSU game. I can't count on it being dry by Sunday so maybe next weekend. With all this rain I'm going to need this mod!
OK. I finally got to it. Beginning & end pics in Photobucket link. Didn't take any more than that because I just zip tied the tube along the frame rail. Cost? I already had the clamps & zip ties, the tubing(20') was about six bucks, the differential union was $2.38 @ the Toyota sealer, & the Briggs & Stratton small engine fuel filter was four dollars & some change.
What's the breather for if you don't mind me asking?
Its an opening on and axle/transfer case/transmission, that allows for air expansion when things heat up inside. When heat is created, air expands and wants to escape those parts, and this mod only extends the breather higher up so water, dust, and mud do not seep into the axle.
Its an opening on and axle/transfer case/transmission, that allows for air expansion when things heat up inside. When heat is created, air expands and wants to escape those parts, and this mod only extends the breather higher up so water, dust, and mud do not seep into the axle.
That's right. You are extending the height of the breather intake(on the rear axle) so if the axle goes completely under water you do not suck water into it. There's not a lot of room to go straight up, so you run a hose into the bed or all the way to the engine compartment. The little air filter on the end keeps solid junk out. Not too expensive & not a lot of time involved for a little piece of mind. Some of the water holes I go through when hunting get a little deep in the rainy season.
Mine breaths in behind the taillight now. Be sure to leave a little slack in the new hose to account for any flex the axle travels through when your wheeling, otherwise you can pull the hose off the axle when it goes to full droop.
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2003 SR5 V8 4x4 Access Cab; SS Autochrome intake; Truxedo cover; Rhino lining; 255/85/16 Cooper Discoverer S/T's; 16x8 Black Steel Wheelers; Ram Air; breather extensions; Viair 380C on board air; Daystar 1.5" lift; Deaver 3leaf AAL; homemade bed rack; 21 gallon water tank
Rear axle breather mod
Linear Mode
