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Originally Posted by 71RS/SS396
The 02 should be 6-8" back from the last tube in the header, if you put it in the collector it will read the cylinder it's closest to.
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That's the same basic info that I received when we placed it where we did. At this point, I'm almost 100% convinced that the mis-connected PCV catchcan is my problem. The oil has likely spattered on the sensor element, preventing it from getting a true reading.
Quote:
Originally Posted by 71RS/SS396
I'm not sure that it is rich, after looking at the pics I suspect the oil it's ingesting from the pcv is what you're seeing on the pistons. You need to address your venting as this can cause a whole host of problems.
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Agreed. The problem is simple: we connected it backwards. Just a simple screwup, and it's already being addressed since the can is off the car. We have to remake one hose, and it's all fixed. D'oh!
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Originally Posted by 71RS/SS396
What pcv vent are you using?
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The Mike Norris unit. I wasn't aware that there were general problems with the aftermarket cans?
Quote:
Originally Posted by 71RS/SS396
I put a restricter in the vacuum line to slow the velocity.
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Good idea.
Quote:
Originally Posted by 71RS/SS396
I would also vent both valve covers to a catch can. The LS engines have horrible windage problems and need a lot of topend ventilation to deal with it. The path you're headed down with a larger stroke is going to make it worse since you're basically installing a bigger fan in the crankcase.
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Not sure how to do this... Currently, the driver's side is connected to the air cleaner as the input. The passenger side is also connected to the air cleaner as input. The barb on the valley is connected to the catch can, and the other side of that is connected to the vacuum port on the TB. Those are what will be corrected when we reassemble.
From all I read on the subject, this is how it's supposed to be connected I think... I want to get the vapors out of the valley, and the fresh air from the valve covers.