Transmission case vent?

[Tyler S]

Tearing down my motor I found this, is there any reason that somebody would do this besides the fact that it was leaking oil. The one coming out of the back of the case was cut flush with the case but not clogged.

 

 

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[sheerider11]

no big deal. they sell a block off plate that you can put on it.

[trickedcarbine]

Billit block off plate is cheap.

[Zillaguy]

Block off is $10

[camatv]

that vent goes UP and hooks into a T fitting.  the upper T line goes up in a big loop.  the bottom of the T goes DOWN to the back of the case.  the case gets hot  bleeds off air and some fluid.  it gets trapped in the lines and either drains back into the case.  or drains down to the cover again after it cools off.

 

if the front line is plugged like that  most motors are ok.  the internal pressure CAN blow out the drive side big seal where the sproket is ( that never happens right??) and i have seen many coem in with that rear line going down plugged with dirt sand oil bla bla bla.  if its constantly venting oilly residue from the case  it attracts all that shit..

 

i personally like to just leave them both hooked up, clear, and let the upper tank area or that long line of hose do the venting.  it just works better..   

 

of course this is just my opinion after years of watching fluid piss out all over the sand after a lot of hot lappin clutch burning action.  and thinking  hmm  that sucks...   then going back to stock configuration and not having it happen again...  

[trickedcarbine]

Mind fucked. Now rethinking my life.

[87sheerips]

I just route that bad boy out the back, straight down in front of the dog bone link.... with all the carb vents and rear case vent.