Turbo"d now pushing oil out the valve covers help please - LS1TECH - Camaro and Firebird Forum Discussion

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Turbo"d now pushing oil out the valve covers help please

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Turbo"d now pushing oil out the valve covers help please

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Old 04-22-2018, 06:50 PM
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Default Turbo"d now pushing oil out the valve covers help please

well, my setup is the sloppy mechanics don't bs me build. 5.3 sloppy stage two cam 7875 80 lb injectors. Took it to the dyno and all was well until 15 lbs of boost, then oil and smoke spewed everywhere. I had my valve covers just open venting to the atmosphere and the tuner told me that wasn't enough. I put a breather on the passenger side oil fill now and still when coming up on boost it pukes oil onto the manifold and smokes like crazy. I was thinking about putting another passenger side valve cover on the drivers side and venting that oil fill too. I'm hoping that two one inch non baffled holes will be enough. I'm nervous because I've seen many guys with more boost than me having no issues with just the pcv stuff removed and open. I gapped my top rings at 26 and my bottom at 28. What are your guys thoughts and experiences with this. From what I've read my plan should work, but the internet has too much info for its own good sometimes and a lot of posts on this are old. Thanks in advance guys, the car runs great besides pissing oil 😡
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Old 04-22-2018, 06:57 PM
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Probably popped a ringland.
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Old 04-22-2018, 07:18 PM
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Even with the rings gapped and methanol injection coming on at 8 lbs? God I hope I didn't, don't wanna pull the motor again....if I remember right u have a very similar build as mine, did u do anything different? Your cars making some good power
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Old 04-22-2018, 07:36 PM
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Sounds like you killed ring lands at the least.

Do leak down and/or compression test.
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Old 04-22-2018, 07:48 PM
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Mines a 6.0 with 210lb injectors on e85 so I don't have to be as careful with the tuneup to keep the pistons in it.
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Old 04-22-2018, 09:15 PM
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Not sure what kind of intake you have or how you have hoses routed but make sure you don’t have any hoses running from the valve covers to the intake that don’t have a check valve in them...... I’m blow through but when I jumped up the boost I started pushing oil out of the breather on the oil fill cap..... I had a hose routed from under carb to driver side valve cover with no check valve in it.... which meant it was sucking crank case pressure under vacuum but when it turned to boost it was pressurizing the crank case..... so I have a vent on the oil fill cap and a hose going from driver side valve cover to carb base with a check valve that can only suck crank case pressure out..... just a thought
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Old 04-22-2018, 09:51 PM
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Gotta wait til Wednesday to do a compression test
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Old 04-22-2018, 09:54 PM
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Originally Posted by 47ford View Post
Not sure what kind of intake you have or how you have hoses routed but make sure you donít have any hoses running from the valve covers to the intake that donít have a check valve in them...... Iím blow through but when I jumped up the boost I started pushing oil out of the breather on the oil fill cap..... I had a hose routed from under carb to driver side valve cover with no check valve in it.... which meant it was sucking crank case pressure under vacuum but when it turned to boost it was pressurizing the crank case..... so I have a vent on the oil fill cap and a hose going from driver side valve cover to carb base with a check valve that can only suck crank case pressure out..... just a thought
ls1 intake, all ports capped, valve covers open. I know what ur saying, hoping it's an easy fix, thx for the reply
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Old 04-22-2018, 10:10 PM
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My thoughts are you have to remove crank case pressure..... I’m not sure how guys are venting both sides and not pushing oil..... a friend did that same thing with a boosted single cab gmc.... he vented both valve covers and had oil coming out of both breathers.... added a line with a pcv valve from intake to valve cover and fixed it..... hope it’s an easy fix
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Old 04-22-2018, 10:14 PM
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I hope it's easy too! I'm going out there now to pull the plugs, maybe that will tell me something , if I see anything weird I'll post pics. Thx
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Old 04-22-2018, 10:19 PM
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The fact that it runs great is keeping my hopes up....
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Old 04-22-2018, 10:45 PM
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Here's the plugs... hmmm, I know my 2step wasn't working right because the light was stuck on, but the car ran fine, now I'm more confused
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Old 04-22-2018, 11:00 PM
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Those plugs are kinda all over the place. I'd say you should get your injectors flowed as it looks like your not getting very even fueling across all cylinders.
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Old 04-22-2018, 11:34 PM
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Flowed perfect, within 1 gram of each other, per Eric Derr
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Old 04-22-2018, 11:36 PM
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Old 04-22-2018, 11:49 PM
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Wonder if the 2step was holding back spark....
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Old 04-23-2018, 07:09 AM
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All of your rear plugs are rich fouled to crap. Something going on causing your pass side to be rich compared to driver. For reference, I'm at 8 psi on 93 only and vent both valve covers no catch can no pvc and no puking oil.

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Old 04-23-2018, 07:06 PM
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Originally Posted by 80/TA/LT1 View Post

Here's the plugs... hmmm, I know my 2step wasn't working right because the light was stuck on, but the car ran fine, now I'm more confused
5,7 and 8 are oil fouled.... not gas fouled. Looks to me like you have 3 bad holes (oil control ring). Pretty sure that motor is hurt, especially given that's it's puking oil....in combination with looking at those plugs.
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Old 04-23-2018, 07:12 PM
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Those do not look oil fouled to me. Oil fouled plugs are typically glazed and that is straight black soot.
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Old 04-23-2018, 07:19 PM
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Originally Posted by ddnspider View Post
Those do not look oil fouled to me. Oil fouled plugs are typically glazed and that is straight black soot.
When zoomed in, it appears to have an oil glaze on them 5,7,8. But it's the combination of issues as a whole that has me convinced.
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