valve cover breathers ok?
valve cover breathers ok? my stock ls1 turbo..just wanted to see if this is a proper setup.
the 2 openings towards the firewall both have breathers. the pas side opening by the oil fill is capped off...
sometimes i see oil on the valve cover by the pass side breather filter.
is that normal? should i have this setup differently?
the 2 openings towards the firewall both have breathers. the pas side opening by the oil fill is capped off...
sometimes i see oil on the valve cover by the pass side breather filter.
is that normal? should i have this setup differently?
I plan to change my setup on my Procharged car to how GMHTP did in this article. Link the two dirty sides together and add a breather vent to replace the oil cap.
http://www.gmhightechperformance.com.../photo_60.html
http://www.gmhightechperformance.com.../photo_70.html
http://www.gmhightechperformance.com.../photo_60.html
http://www.gmhightechperformance.com.../photo_70.html
I still beleive that you want to have a vacuum source on the pcv system to pull the harmful gasses and moisture out of the valley. With just a vent, I feel you aren't adequitly doing that.
I tapped each valve cover with a -6AN fitting, ran a hose connecting the rear fittings on each valve cover, then ran hose from each front fitting to a vented catch can. Then I put a breather oil cap on for good measure. I'll see if I can find some pics.
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The drivers side valve cover already has a hole in the rear, but I drilled and tapped the passenger side cover, ran -10 lines from each one, T'd it into a single -10 line and into a vented can.
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If you are running a dual catch can setup much like the Saiko Michi using a setup much like below would you also need a breather or no? I can's seem to find much on whether or not a breather is needed with this setup. I'm pushing boost mid teens on a built bottom end ls1 single tc78 setup.
Dont have to deal with catch cans, breathers or any of that nonsense. That's a fantastic idea and I think I'll steal it!
Maybe I'll tap and drill for another large fitting in my catch can and run a line from there to my downpipe. Might not have as much vacuum as the intake but you would eliminate the problems with PCV and still be getting out a lot of vapor and gas from the crankcase.
Maybe I'll tap and drill for another large fitting in my catch can and run a line from there to my downpipe. Might not have as much vacuum as the intake but you would eliminate the problems with PCV and still be getting out a lot of vapor and gas from the crankcase.
Last edited by Adam86; Jul 1, 2011 at 12:50 AM.
That's a fantastic idea and I think I'll steal it!
Maybe I'll tap and drill for another large fitting in my catch can and run a line from there to my downpipe. Might not have as much vacuum as the intake but you would eliminate the problems with PCV and still be getting out a lot of vapor and gas from the crankcase.
Maybe I'll tap and drill for another large fitting in my catch can and run a line from there to my downpipe. Might not have as much vacuum as the intake but you would eliminate the problems with PCV and still be getting out a lot of vapor and gas from the crankcase.
True, so I'd put a one-way check valve in there so that flow could only go out the exhaust and not back into the motor.
I haven't actually run my car with the blower on it with my setup but I put a small breather on the back of the drivers side like you have, used an oil cap with a larger breather and also ran a sealed catch can to the procharger inlet hat which should be pulling some vaccume under boost. Any oil sucked up by the vaccume line should be caught by the catch can to keep it from getting into the suction side of the procharger. I haven't run it setup like this but that's how I have it set up and the theory sounds good to me. Let me know if any of you see an issue with it. The only thing I could think of is oil getting sucked into the procharger but the catch can should do its job and keep that from happening I would think. I figured this would pull filtered air into the breathers untill the pressure overcomes the vaccume and could then excape out of the breathers if needed.
