Oiling/PCV problem with LS6
Thread Starter
Race Director
Joined: Sep 1999
Posts: 12,435
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From: CONCORD NC
Oiling/PCV problem with LS6
I hear there have been failures of the valley cover under the intake, causing oil consumption problems similar to the LS1 problem prior to 01'. Can anyone confirm this, as there seem to be no GM TSB's on the matter. After years of no problems, I seem to be getting an unusual amount of oil back into my throttle body.
Thanks!
Dave
Thanks!
Dave
Race Director
Joined: Oct 1999
Posts: 17,702
Likes: 1,206
From: Phila PA, Bonita Springs FL
Re: Oiling/PCV problem with LS6 (davidfarmer)
Dave:
You race & run your car hard... Under these conditions or at WOT, there is little or no vacuum in the line, and oil blows thru the PCV valve...
Definitely a 100% must do mod (Oil catch jar, or Greddy oil catch can), for someone like you! :yesnod:
You race & run your car hard... Under these conditions or at WOT, there is little or no vacuum in the line, and oil blows thru the PCV valve...
Definitely a 100% must do mod (Oil catch jar, or Greddy oil catch can), for someone like you! :yesnod:
Thread Starter
Race Director
Joined: Sep 1999
Posts: 12,435
Likes: 916
From: CONCORD NC
Re: Oiling/PCV problem with LS6 (indypace78)
I appreciate the advice, but the question remains. I have run this car for nearly 3 years, and have NEVER had the problem until my most recent engine swap. A friend told me the seal/baffle in the valley covers could become damaged, and I am looking for confirmation. I will run a catch can/separator if necessary, but would prefer to find the cause not rig up a make-shift solution. I am going to swap valley covers and inspect them both this week.
Dave
btw, I only turn the engine 7500 rpm :cheers:
Dave
btw, I only turn the engine 7500 rpm :cheers:
Thread Starter
Race Director
Joined: Sep 1999
Posts: 12,435
Likes: 916
From: CONCORD NC
Re: Oiling/PCV problem with LS6 (bowtiebandit)
That's funny, I'm sure GM is going to replace my Katech forged pistons and rods!
Now really, I found the problem. It is exactly as mentioned above, the baffle is not sealed to the cover. The picture shows the area on my engine where there is a leak. Had to do the old "put your hand over the baffle and blow" technique to find it. My other cover seals perfectly. I'll pull the bad on apart and reseal it.
the picture shows where mine is leading.
Now really, I found the problem. It is exactly as mentioned above, the baffle is not sealed to the cover. The picture shows the area on my engine where there is a leak. Had to do the old "put your hand over the baffle and blow" technique to find it. My other cover seals perfectly. I'll pull the bad on apart and reseal it.
the picture shows where mine is leading.
Thread Starter
Race Director
Joined: Sep 1999
Posts: 12,435
Likes: 916
From: CONCORD NC
Re: Oiling/PCV problem with LS6 (davidfarmer)
btw, HERE is a copy of the correct tsb
http://www.metricchemical.com/oil.pdf
http://www.metricchemical.com/oil.pdf
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