Ok I just bought this car, and I notice that there is oil on the passenger side valve cover. I pulled out the little black 90 degree angle thing, and it's covered in oil on the inside. I think that this is the breather for the PCV system, right? Should I put a bezel in it so oil doesn't splash up in there? Also, is this bad?????

well if there is a PCV valve there that is getting hit by oil, it could hinder breathing through the valve, perhaps even get some oil in your vaccum line and into your TBI unit or carb. pull the valve out and shake it, if it rattles its good, if it doesn't then you should buy a new one. A bezel in there would definatly help keep things cleaner

he said passenger side....thats not the pcv thats the crankcase breather....if you have the stock aircleaner it should lead into that....where it is attached to a crankcase filter...if it is open element aircleaner, then that crankcase breather should be replaced with a mini open element breather...they push in to the valve cover and look like mini open elements.



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Rick
90 Camaro RS 305 TBI
400 small block, Hooker 1 3/4 LTs, Random Tech Cat, Hooker aero chamber cat back on the way!!
TH700-R4 with Trans-Go shift kit (corvette servo here...but not installed yet)
MacEwen Motorsports White Gauge Overlays
14" K&N X-Stream Open Element
GTS Headlight and Taillight covers
5% Limo Tint all around
Classic White Chevy Bowtie sticker on rear window
http://www.geocities.com/esvalenz

Man if my camaro were a rice-rocket all those mods would give me what...easily 50-60 hp!!!

"Just because I've done it, doesn't mean I knew what I was doing!" - Me

I'd be curious to know, since my whole PCV system is coated with a thin layer of oil as is the passage through the throttle body. I'm sure some vaporization of oil is normal, though.

I am having the same problem! My PCV system should be termed "OSS" for Oil Suction System At first I thought this was due to the baffleless Wysco valve covers I put on , so I bolted in a baffle to deflect away oil from the PCV. Result, oil still gets sucked into the PCV and then into the intake. Next , I tried adding a Moroso oil separator/breather inline w/ the PCV, still oil in the PCV!!! :MAD:

Some things I should mention, I have Total Seal Piston rings (Gapless 2nd), 383 cu. in., and the cam has a 112 deg lobe separation. There is approx. 10-12 inches of vacuum through the PCV and 15 inches of vacuum through other vacuum ports.

With these total seal rings I am forcing myself to think that the leak down is in fact around or even < than 2% as the company claims. (After I do a leak down test I'll know for sure). I am thinking that these rings generate so much positive pressure in the crank case that oil gets forced up into the valve train area as well as in the lifter valley (which would also explain a newly developing leak at the rear of the intake -which occurred while beating a supercharged mustang senseless!!!!! )

Does anyone have any thoughts on this?

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1987 383 cu.in. IROC-Z: TPIS MiniRamIII / GM FastBurn heads / Strange 12Bolt Diff./ Neil's Home-Built BulletProof 700R4+Vigilante 2800 stall converter
MSD Billet Distributor, Dig 6+, & Blaster coil / Hooker Supercomp Long tube headers