Check this out before spending $$$ on a catch can!
12-03-2005, 11:12 AM
#81
Originally Posted by BackinBlack02SS
Weather you realize it or not, it's not being metered through the MAF, and is probably not the best way to modify your PCV system. Hook some tuning software up, and I think you'll change your mind.
Yet another reason to not use a MAF.
12-03-2005, 11:23 AM
#83
The simpleist way that I have found to eliminate the oil consumption problem is this:
Mount the PCV valve vertically in a line running from the back of the passenger side valve cover fitting to the driver's side valve cover fitting. Basically, you run a hose from the fitting on the back of the passenger side valve cover to the 90 degree (plastic) fitting on the driver's side valve cover. Cut the hose & install a "T" fitting. In the vertical leg of the "T", is a 1.5" or 2" long 3/8" hose poining upward. The PCV sleeve mounts over this piece of hose & clamped to the 3/8" hose. The PCV is mounted fat side down into the sleeve & clamped (if you have no sleeve, use a 1" or so piece of hose with an ID large enough for the PCV base to fit into). Now run a hose from the top of the PCV valve to the throttle body & secure the PCV against the firewall ensuring that it is vertical & you are done. The car remains plumbed as it was intended by GM & no more oil consumption. No catch can, breather cap, plugged holes, or small orificed PCV valves. Cost is for a "T" connector, some hose clamps, & a little bit of 3/8" vacuum hose.
If the short line from the passenger side valve cover, this is the second line toward the front of the engine I am describing & not the line discussed above, continues to allow oil into the intake, a small fuel filter can be installed in that line. Mine does not.
Mount the PCV valve vertically in a line running from the back of the passenger side valve cover fitting to the driver's side valve cover fitting. Basically, you run a hose from the fitting on the back of the passenger side valve cover to the 90 degree (plastic) fitting on the driver's side valve cover. Cut the hose & install a "T" fitting. In the vertical leg of the "T", is a 1.5" or 2" long 3/8" hose poining upward. The PCV sleeve mounts over this piece of hose & clamped to the 3/8" hose. The PCV is mounted fat side down into the sleeve & clamped (if you have no sleeve, use a 1" or so piece of hose with an ID large enough for the PCV base to fit into). Now run a hose from the top of the PCV valve to the throttle body & secure the PCV against the firewall ensuring that it is vertical & you are done. The car remains plumbed as it was intended by GM & no more oil consumption. No catch can, breather cap, plugged holes, or small orificed PCV valves. Cost is for a "T" connector, some hose clamps, & a little bit of 3/8" vacuum hose.
If the short line from the passenger side valve cover, this is the second line toward the front of the engine I am describing & not the line discussed above, continues to allow oil into the intake, a small fuel filter can be installed in that line. Mine does not.
12-03-2005, 12:58 PM
#84
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Originally Posted by MeentSS02
It actually is to an extent, since the free air line connected to the throttle body. All of the air that goes through the TB is metered by the MAF.
the maf is in front of the TB, i dont get what you're saying?
12-03-2005, 02:44 PM
#86
Originally Posted by MeentSS02
And whether you realize it or not, and you don't, I'm not even using the MAF. This car is tuned full time speed density, and my tune is still spot on, even with the breather. No. Seriously. It is.
Yet another reason to not use a MAF.
Yet another reason to not use a MAF.
Based on my SD third gen days, I'm more inclined to like the MAF over SD IMO, but it really depends on your setup.
12-03-2005, 05:06 PM
#88
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Originally Posted by MeentSS02
It actually is to an extent, since the free air line connected to the throttle body. All of the air that goes through the TB is metered by the MAF.
Look at it this way if you disconnected your bellow you would have air going through the throttle body that wasn't going through the maf. How would the maf be able to meter it? If your quote is true then some how the maf would be able to meter what goes into the tb even without the air passing through the maf. That wouldn't work unless the maf was after the tb.
12-03-2005, 06:07 PM
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Please help me understand how air coming into the tb from a different place other than the maf could be metered by the maf; no sd tuning involved seeing how that seemed to be the conditions when the quote was made.
