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Old 04-26-2012, 08:49 AM   #1
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Default Venting valley cover?

I was thinking about just welding a -12an bung to the front of the valley cover & venting into a breather tank.. Would this be sufficient enough for a 346 H/C/I motor w/ nitrous? I'd much rather do this instead of running breathers on the valve covers, if it will work. Thanks!
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Old 04-26-2012, 10:19 AM   #2
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Valve covers are the highest point to vent from, have u considered putting bungs on the valve covers and plumbing to a catch can?
Thats what I did.
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Old 04-26-2012, 10:28 AM   #3
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Not trying to hijack but isnt oil consumption worse from the valve cover area than the valley cover?
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Old 04-26-2012, 10:32 AM   #4
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Quote:
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Valve covers are the highest point to vent from, have u considered putting bungs on the valve covers and plumbing to a catch can?
Thats what I did.
Yes, I actually have -10 bungs to do the covers.. Just thought a single 12 from the valley would look a lil cleaner.. So you're just venting from both valve covers to a single breather tank?
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Old 04-27-2012, 06:22 AM   #5
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I actually used 2 catch cans and I used the stock valley vent also.

Click the image to open in full size.
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'98 Trans Am WS6 Cartek N/A (L92/LS7) Hydraulic roller 441 ci.
9.59 @ 138 1.30 60' - Best 60' 1.29 (new setup in the works)
video of 9.6x passes http://uk.youtube.com/watch?v=KVdBZk5Y3s4
**check out my TA in the Aug '09 issue of GMHTP magazine**
http://www.gmhightechperformance.com...ws6/index.html

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Old 04-29-2012, 06:56 AM   #6
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Quote:
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I accually used 2 catch cans and I used the stock valley vent also.
You did a nice job with the install BUT.....
It would've been nice if that engine accually ran in your car before you parted it out and sold everything.
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Old 04-29-2012, 08:18 AM   #7
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Hahahaha, this is true.
Your motor did look alot better under my hood than my old motor, I should've at LEAST started the thing up before I sold it-hahaha
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Old 04-29-2012, 09:01 AM   #8
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youll get less oil out of the valve covers vs the valley if you vent from the valley in the from the front.


If it is in the mid region of the valley cover it may be better.


I had my vacuum pump pulling from the front and would pull 1/4 qt of oil on a run.
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Old 04-29-2012, 09:35 AM   #9
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Can't compare a vacuum pump to just crankcase ventilation.
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Old 04-29-2012, 09:35 AM
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