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How to: extending the rear diff vent

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Old Jun 27, 2011 | 07:30 AM
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Originally Posted by mjs302
I understand your thinking on using a filter with a check-valve, but I believe the "differential air" should be able to flow both ways. As the axle assembly gets hot, the air expands and needs a way out. When the axle gets sugmerged in water, it will rapidly cool and the air inside will contract and need a way in. If a check-valve (anti-drain back valve) prevents flow in one of these directions, the air will escape/enter from somewhere else (usually an axle seal). If that seal is currently underwater......
this is the way the stock valve works also
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Old Jun 27, 2011 | 07:11 PM
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Originally Posted by mjs302
I understand your thinking on using a filter with a check-valve, but I believe the "differential air" should be able to flow both ways. As the axle assembly gets hot, the air expands and needs a way out. When the axle gets sugmerged in water, it will rapidly cool and the air inside will contract and need a way in. If a check-valve (anti-drain back valve) prevents flow in one of these directions, the air will escape/enter from somewhere else (usually an axle seal). If that seal is currently underwater......
even if it needs to breath or not the pressure to take in air through the seal around the fuel filter is going to less than the pressure to take in air through the seals air is a lot like electricity it will take the path of least resistance

my two cents
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Old Jan 17, 2012 | 07:11 PM
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Hey dukes did you move the one for the tranny? Cause i heard theres one there too. but what do i know? haha
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Old Jan 17, 2012 | 07:19 PM
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Do the front one too.
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Old Jan 17, 2012 | 07:21 PM
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Originally Posted by leecarr
Do the front one too.
The front dif vent is up by the brake booster, so it shouldnt need to be moved if you dont have water go over your hood...correct me if im wrong dukie
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Old Jan 17, 2012 | 07:47 PM
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Know that you mention it , just because you're rite doesn't mean I won't correct you any way (ask my kids).
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Old Jan 17, 2012 | 07:56 PM
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Originally Posted by leecarr
Know that you mention it , just because you're rite doesn't mean I won't correct you any way (ask my kids).

Haha you can be right and correct me doesnt mean ill accept it. ignorance is bliss
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Old Jan 18, 2012 | 07:42 AM
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correct front diff is already extended to the top of the firewall. I have not extended the tranny vent due to the location of it. It should be ok since it's a one way valve though
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Old Jan 18, 2012 | 04:33 PM
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Originally Posted by dukie564
correct front diff is already extended to the top of the firewall. I have not extended the tranny vent due to the location of it. It should be ok since it's a one way valve though

Ah makes sense.
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Old Apr 2, 2013 | 09:14 AM
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Doing this on Saturday! Because I don't want this to happen again. Thanks!
Attached Thumbnails How to: extending the rear diff vent-image-2826323154.jpg  
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Old Apr 2, 2013 | 09:40 AM
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holy jeebus....
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Old Apr 2, 2013 | 09:50 AM
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Ya exactly. I do lots of deep water/mud stuff.
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Old Apr 2, 2013 | 09:56 AM
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how does your alternator feel about that?
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Old Apr 2, 2013 | 10:08 AM
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So far she has been ok. Make sure I keep her clean though
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Old Apr 2, 2013 | 11:23 AM
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How to: extending the rear diff vent-image-133526731.jpg
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