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Rear diff breather mod

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Old 11-28-2010, 11:45 AM   #1
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Rear diff breather mod

Is the rear diff breather mod really needed? Or is it one of those things ppl do just in case?
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Old 11-28-2010, 11:47 AM   #2
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Define "needed"? If you regularly cross water, I would say it's absolutely necessary.
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Old 11-28-2010, 11:49 AM   #3
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Ok that's really all I was looking for.
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Old 11-28-2010, 11:49 AM   #4
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It is only needed if you plan on submerging your rear diff in water. If you dont plan on taking it through water and mud you should be good leaving it where it is now.
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Old 11-28-2010, 11:52 AM   #5
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Like Jandrews said, its only needed if you plan on crossing water up to your axles, if its just small puddles don't even worry about it.

If you plan on offroading, you may as well just do it because chances are your going to cross some deeper water at some point in your travels.
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Old 11-28-2010, 11:54 AM   #6
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for well under $20 i say do it anyway just incase
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Old 11-28-2010, 11:57 AM   #7
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Quote:
Originally Posted by Gylar View Post
Like Jandrews said, its only needed if you plan on crossing water up to your axles, if its just small puddles don't even worry about it.

If you plan on offroading, you may as well just do it because chances are your going to cross some deeper water at some point in your travels.
x2 and the mod is super easy
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Old 11-28-2010, 11:58 AM   #8
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Yeah I have all the materials. I was just putting it off until I got my lift done so I didn't have to buy a new hose if its not long enough but I think I'll just do it. Thx guys
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Old 11-28-2010, 01:06 PM   #10
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Quote:
Originally Posted by OffroadToy View Post
It's also a good mod for backing down boat ramps.
^What he said. Some lakes I have to drive completely in the water to get my tin can off the trailer. Peace of mind is worth the 20mins this takes.
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Old 01-17-2011, 02:05 PM   #11
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so whats needed to do this mod?
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Old 01-17-2011, 02:07 PM   #12
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Quote:
Originally Posted by bowhunter11199 View Post
so whats needed to do this mod?
Its a 2nd gen thing as far as I know.
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Old 12-15-2011, 08:05 PM   #13
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Quote:
Originally Posted by Hoyal View Post
Its a 2nd gen thing as far as I know.
its an ALL gen
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Old 12-15-2011, 08:30 PM   #14
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It's under Mods & Tutorials at the top, 2nd gen how to's, diff breather mod for dummies.
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Old 12-15-2011, 11:09 PM   #15
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Click on My Diff. Breather Mod. Pics link, below... I made it as easy as pie with photos and details...

For the OP, if you drive a HOT differential into water that is close to a foot or more deep, the water (usually muddy) can and will siphon into the differential oil by way of the AXLE SEALS.

The stock 'breather' is really only an exhaust valve to let hot gasses out of the diff. When you dip into cool water there is negative air pressue (a vacuum) inside the diff... and to break that vacuum, air or muddy water will try and get in, as it should.

The FRONT breather (4WD) has a proper 2 way breather (lets hot gasses out as well as cool air in to break the vacuum). That breather is located at the end of a rubber tube, high up, near the fuse box.

The mod. does the same thing for the REAR diff... We put the 2 way breather at the end of a tube, high up.... It is easy. See my pics...
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