PCV Delete Guys - Problems Running Just Breathers?
Originally Posted by BackinBlack02SS
One breather is fine. As stated before, with bay to bay breathing, it is more than enough. Here is what I used for my 02 SS:
Metco breather to replace passenger side oil cap (TR sells them)
plug for drivers side grommet, GM part # 12568011
three 11/32 caps for the passenger side valve cover and throttle body
1 cap (can't remember size) for the intake manifold
Metco breather to replace passenger side oil cap (TR sells them)
plug for drivers side grommet, GM part # 12568011
three 11/32 caps for the passenger side valve cover and throttle body
1 cap (can't remember size) for the intake manifold
how much does the PCV valve/hoses effect the MAP sensor readings?---My stock one is a little rigged the stock one broke and i had one form an '01 lying around. it seems to have sealed propery, i used 3/8" fuel hose and a screw in reducer w/ teflon tape to seal the threads in properly (no apparent leaks) and plugged it onto the stock fitting.
My map sensor was only reading @ 20 wouldnt change at all just 20. i replaced the sensor but dont have HP tuners right now. If anyone has any imput please let me know
My map sensor was only reading @ 20 wouldnt change at all just 20. i replaced the sensor but dont have HP tuners right now. If anyone has any imput please let me know
I am in the procees of doing a H/C change right now with a fast/NW setup and billet rails.
This would look so sweet to get rid of this junk and I was thinking of getting a catch can. Not no more.
Thank fellaz, great idea.
This would look so sweet to get rid of this junk and I was thinking of getting a catch can. Not no more.
Thank fellaz, great idea.
nice, looks way better!! Let me see, !AC, !Powersteerin', !abs? looks way cleaner without al that crap hanging around!!
Though i would love to know where you got that radiator cap..
Man!! Now that is sweet!!!!
Though i would love to know where you got that radiator cap..
Man!! Now that is sweet!!!!
Originally Posted by obZidian
nice, looks way better!! Let me see, !AC, !Powersteerin', !abs? looks way cleaner without al that crap hanging around!!
Though i would love to know where you got that radiator cap..
Man!! Now that is sweet!!!!
Though i would love to know where you got that radiator cap..
Man!! Now that is sweet!!!!
You forgot !TCS, !AIR, !EGR, !Cruise, !PCV, !bumper ****, !wipers & motor, umm, I think that's it.
That sad this is, it's still a pig.
I am running the Metco breather, LS6 PCV setup, and an AMW catchcan. I don't know if I trust completely removing the PCV lines. I think that over an extended period of time that it may cause harm and I doubt anyone has put the mileage test to this mod.
I am **** about oil in the intake ports of the heads - that stuff cakes up over time, and your $2000 ported heads have lost their purpose essentially. I am pulling my intake tomorrow and I'll check it out. If the oil is in the intake, then I am selling my catchcan, and eliminating the PCV from the engine.
I think that my setup should reduce or completely eliminate the oil sucking problem as it is, but I may be wrong.
I am **** about oil in the intake ports of the heads - that stuff cakes up over time, and your $2000 ported heads have lost their purpose essentially. I am pulling my intake tomorrow and I'll check it out. If the oil is in the intake, then I am selling my catchcan, and eliminating the PCV from the engine.
I think that my setup should reduce or completely eliminate the oil sucking problem as it is, but I may be wrong.
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I'm gonna remove my setup.. and sell the AMW catch can, it did stop alot of the oil, but after swapping my heads this year and seeing what was still in there, even after putting the catch can on at 6800 miles on the odo, it was disturbing. Car hadd 18700 on the clock when the heads came off and got swapped, still full of goo.... hence why I'm dropping all that stuff.
Omega, now I knwo what my engine bay is gonna look like LOL. I"m swapping out my m6 for a th400, so the abs, tcs and cruise aren't gonna work I don't think anymore, so that stuff is all outta there, as well as the a/c, and probably the power steering too while I'm at it, I roll on skinnies most of the time anyway, probably never even know it's gone.
Did you keep the factory rack, or go to a manual one?
Omega, now I knwo what my engine bay is gonna look like LOL. I"m swapping out my m6 for a th400, so the abs, tcs and cruise aren't gonna work I don't think anymore, so that stuff is all outta there, as well as the a/c, and probably the power steering too while I'm at it, I roll on skinnies most of the time anyway, probably never even know it's gone.
Did you keep the factory rack, or go to a manual one?
GM has, since 2000, changed the PCV system untill in, 04 there is no PCV "valve" and the system is closed loop.There are now no vents in the rear of the valve covers. With the LS6 valley cover and a catch can the system works pretty well. I just added GM # 12589430 Cap, oil fill -<$10 (vented) which has another use but is a check valve, allowing pressure out but blocking incoming air. If you pry the cap off you can cut down the spring (shown) to lessen relief pressure to open valve and make a cap that fits perfectly and will relieve any momentary block pressure.
http://www.supersixmotorsports.com/PDF/PCV%20Bypass.pdf
This link explains alittle bit of what is going on and how to effectively remove it. The removal steps are geared towards Mustangs, but the theory behind it is the same.
Dave
This link explains alittle bit of what is going on and how to effectively remove it. The removal steps are geared towards Mustangs, but the theory behind it is the same.
Dave
Why not leave the PCV valve in place. Close off all interaction with the intake manifold. This will eliminate the oil vapor getting into the intake and combustion chamber. Then run the outlet of the PCV valve to a catch can or a K&N type filter element. This is essentially what most carb setups have. They incorporate one PCV valve on the driverside valve cover with a tube running to the air breather. It has a small filter element clipped to the inside of the breather and vents to the air breather.
This will give you the functionality of the PCV valve to vent positive crankcase pressure only and do away with the vacuum of the engine opening the valve and contaminating the intake air charge. Just another idea.
Dave
This will give you the functionality of the PCV valve to vent positive crankcase pressure only and do away with the vacuum of the engine opening the valve and contaminating the intake air charge. Just another idea.
Dave
I guess putting a breather in place of the line going to the intake, and capping off the small line going to the TB from the passengers side valve cover would work for all intended purposes as well... but would not do one thing... clean some more crap out of the engine bay. I want to gut my pcv to eliminate the oil from entering the intake tract, and because it will be one less thing to deal with when I swap to a edlebrock victor intake, and it will clean up the engine bay some more.. plus I can sell off my catch can. The catch can did do what it was supposed to do, catch oil, but eliminating the pcv completely, that is the only real way to stop the problem.
Poor manufacturers of catch cans LOL, thigns sure look nice, but are an expensive way of only 1/2 fixing the problem.
Poor manufacturers of catch cans LOL, thigns sure look nice, but are an expensive way of only 1/2 fixing the problem.
Originally Posted by 02WS6Bird
how much does the PCV valve/hoses effect the MAP sensor readings?---My stock one is a little rigged the stock one broke and i had one form an '01 lying around. it seems to have sealed propery, i used 3/8" fuel hose and a screw in reducer w/ teflon tape to seal the threads in properly (no apparent leaks) and plugged it onto the stock fitting.
My map sensor was only reading @ 20 wouldnt change at all just 20. i replaced the sensor but dont have HP tuners right now. If anyone has any imput please let me know
My map sensor was only reading @ 20 wouldnt change at all just 20. i replaced the sensor but dont have HP tuners right now. If anyone has any imput please let me know
Anybody? ^
Originally Posted by DWillTA
Why not leave the PCV valve in place. Close off all interaction with the intake manifold. This will eliminate the oil vapor getting into the intake and combustion chamber. Then run the outlet of the PCV valve to a catch can or a K&N type filter element. This is essentially what most carb setups have. They incorporate one PCV valve on the driverside valve cover with a tube running to the air breather. It has a small filter element clipped to the inside of the breather and vents to the air breather.
This will give you the functionality of the PCV valve to vent positive crankcase pressure only and do away with the vacuum of the engine opening the valve and contaminating the intake air charge. Just another idea.
Dave
This will give you the functionality of the PCV valve to vent positive crankcase pressure only and do away with the vacuum of the engine opening the valve and contaminating the intake air charge. Just another idea.
Dave
Originally Posted by JL ws-6
Omega, now I knwo what my engine bay is gonna look like LOL. I"m swapping out my m6 for a th400, so the abs, tcs and cruise aren't gonna work I don't think anymore, so that stuff is all outta there, as well as the a/c, and probably the power steering too while I'm at it, I roll on skinnies most of the time anyway, probably never even know it's gone.
Did you keep the factory rack, or go to a manual one?
Did you keep the factory rack, or go to a manual one?
TECH Apprentice
Joined: Oct 2005
Posts: 332
Likes: 0
FWIW, I have a catch can and to be honest, it didn't cure the problem. I have since added an oil fill breather cap to the passenger side valve cover and I have to say, I think it worked. No more spots on the back of the car.
How is leaving the intake completely out of the equation defeating the PCV system? The PCV valve is a 2 way valve. The vacuum from the manifold sucks the oil vapor in at idle and part throttle or high vacuum situations. The valve also will vent if there is excessive crankcase pressure.
How much pressure in the crankcase is to much? How much pressure does it take to overcome the PCV valve with no vacuum present?
How much pressure in the crankcase is to much? How much pressure does it take to overcome the PCV valve with no vacuum present?
Originally Posted by DWillTA
How is leaving the intake completely out of the equation defeating the PCV system? The PCV valve is a 2 way valve. The vacuum from the manifold sucks the oil vapor in at idle and part throttle or high vacuum situations. The valve also will vent if there is excessive crankcase pressure.
How much pressure in the crankcase is to much? How much pressure does it take to overcome the PCV valve with no vacuum present?
How much pressure in the crankcase is to much? How much pressure does it take to overcome the PCV valve with no vacuum present?