Now that I am almost done with my birf job, I really want to make sure that my diff breathers are venting properly. How can I do that? How are they supposed to work?
Jared
Jared
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sjpitts said:PS-- Kevin--- do you have a picture showing where and how you ended your new vent lines?
sjpitts said:It looks to me like CDAN is still using the stock vent-cap on his extended breather.
OTOH, Kevin says he just used filter.
Which is the better approach? And again, does any body know how those vent caps are supposed to work, and how you can confirm they are working?????
Jared
Tools R Us said:The stock breather is a one way valve, allows air out but not in, at first glance this looks good, you don't want to pull dirt/muck/water into the diff right? So your cruising and the diffs are up to operating temp, then submerge them. The water rapidly cools the diff causing a vacuum in the housing, the stock breather holds the vacuum so any little leak in the housing pulls in water, also blamed for pulling grease from the birf housing into the gear oil. With a free flowing filtered breather the diff is always at the same pressure as the surrounding air. Some people who play in water often use a small compressor to keep the diff housings at a slight positive pressure, driving out water when submerged.
Don't think there is a "right" way, when I installed the L shocks the stock breather lines were too short. So rather than spending anytime on the subpar stock system, I just replaced it, it was cheap, quick, easy and works, what's not to like?