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Crankcase pressure solution

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Old Nov 17, 2011 | 07:26 PM
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Default Crankcase pressure solution

Heres my idea and Im open to all suggestions but im trying to keep it as simple as possible.

Basically I was running a RX performance catch can and still was developing leaks so I need to vent off more pressure

My idea- Delete the PCV all together- run a line off the Passenger side valve cover nipple Y it in to line off of the valley cover nipple then run a single line from the Y to a vented Moroso catch can.

thoughts?
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Old Nov 17, 2011 | 07:42 PM
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vent both VCs into a vented CC
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Old Nov 17, 2011 | 07:47 PM
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Originally Posted by Slow Z06
vent both VCs into a vented CC
Yeah I thought about that to- I have an 03- and the DS VC has a plug on the rear. Is that where I would do it from? If so how would you suggest I go about it... preferably pics
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Old Nov 17, 2011 | 08:07 PM
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I have a -10 line from each VC that "T" into a single line and then into a Moroso vented can. I don't seem to have any issues whatsoever.

HTH
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Old Nov 17, 2011 | 08:09 PM
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Originally Posted by Corvette-Chris
I have a -10 line from each VC that "T" into a single line and then into a Moroso vented can. I don't seem to have any issues whatsoever.

HTH
Any pics of how you tapped into the VCs? Id like to run something big like -8 or -10. -6(3/8) will work but seems rather restrictive.
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Old Nov 17, 2011 | 08:47 PM
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What was wrong w the RX? I was planning on going w that one, as it seems the only one out for FI applications.
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Old Nov 17, 2011 | 08:49 PM
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Originally Posted by 95wht6spd
What was wrong w the RX? I was planning on going w that one, as it seems the only one out for FI applications.
I dunno if anything was wrong with it- it just didnt work on my setup.
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Old Nov 17, 2011 | 08:54 PM
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Originally Posted by spoon98hatch
Any pics of how you tapped into the VCs? Id like to run something big like -8 or -10. -6(3/8) will work but seems rather restrictive.
The driver's side VC already has a hole in the rear of it, so I just went and found a fitting that would fit. On the passenger's side VC, I drilled and tapped a hole big enough for a fitting that is right dead center of the valve cover, but its on the small surface closest to the intake manifold.

Here you can see the drivers side silver fitting that has the AN fitting and hose attached:



Here you can see where the AN hose comes off the top of the VC and the vented catch can where the go:

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Old Nov 17, 2011 | 08:56 PM
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What did you do with the factory pcv system? cap off everything?
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Old Nov 17, 2011 | 09:17 PM
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Originally Posted by spoon98hatch
What did you do with the factory pcv system? cap off everything?
Basically.

The two ports on the pass VC are capped.
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Old Nov 17, 2011 | 10:33 PM
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What Moroso can did you get? And just so I understand youre not running anything else other than just venting the 2 VCs
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Old Nov 17, 2011 | 11:10 PM
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Originally Posted by spoon98hatch
What Moroso can did you get? And just so I understand youre not running anything else other than just venting the 2 VCs
Hell, I'm not sure which model number it is. I thought it was going to be aluminum, but turns out it was black plastic. It's still nice, though. I guess that's why it was relatively cheap LOL

Correct. Just the 2 lines from the VC's.
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Old Nov 17, 2011 | 11:52 PM
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I use a -12 moroso off my passanger side valve cover. Use a catch can with check valve off valley to tb. The we tapped off each valve cover with -6an to another moroso and took off the vent and welded a -6an male bung on it and ran it to the suction side of my blower. Pulls great vac. No seal problems. Just took the dongle off the other day for a belt change and the impeller to the YSI was perfectly clean. No oil intrusion.
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Old Nov 18, 2011 | 12:00 AM
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Originally Posted by JMBLOWNWS6
I use a -12 moroso off my passanger side valve cover. Use a catch can with check valve off valley to tb. The we tapped off each valve cover with -6an to another moroso and took off the vent and welded a -6an male bung on it and ran it to the suction side of my blower. Pulls great vac. No seal problems. Just took the dongle off the other day for a belt change and the impeller to the YSI was perfectly clean. No oil intrusion.
Sounds pretty solid- I already ordered the parts to do it like Corvette-Chris though lol I was looking at running the McMaster Carr check valve and a catch can as you did but decided against it as the RX had 2 check valves and it still IMO let boost into the crankcase
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Old Nov 18, 2011 | 02:36 AM
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Originally Posted by spoon98hatch
Sounds pretty solid- I already ordered the parts to do it like Corvette-Chris though lol I was looking at running the McMaster Carr check valve and a catch can as you did but decided against it as the RX had 2 check valves and it still IMO let boost into the crankcase
We have done this since 06. Info is here on the forum. Hope it works out.
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