็Qustion? about hose to caburator
January 9th, 2013, 02:56 AM
#3
January 9th, 2013, 03:09 AM
#4
Registered User
Join Date: Jan 2009
Location: Too close to Toronto!!
Posts: 4,087
Fresh air is drawn in at right valve cover because of vacuum at left valve cover, and crankcase vapours go out from left valve cover via PCV valve and hose to carb, because of carb vacuum. PCV valve is a check valve in case of back fire.
January 9th, 2013, 05:13 AM
#5
Registered User
Join Date: Dec 2007
Location: Fort Pierce, FL
Posts: 1,124
Although a "pollution thing", that doesn't mean you should eliminate it. It's a closed system that relieves the pressures in the crankcase and keeps those fumes in the engine to be burned, rather than letting them into the air. Don't ever eliminate it, or the unrelieved pressure will push oil all kinds of places you don't want it. You could convert back to the older style open system, but what's the point? The PVC does not rob horsepower or cause drivability issues (unless it is plugged up).
January 9th, 2013, 06:03 AM
#6
Old(s) Fart
Join Date: Mar 2007
Location: Northern VA
Posts: 47,595
Yes, you want to run a PCV valve. It makes no difference if the valve is in the RH or LH valve cover - some Olds motors even connect the PCV valve in the valley between intake runners. I've also seen other motors that have the valve in the oil fill tube (not Olds factory issue). All that matters is that the PCV valve is connected to the crankcase volume somehow.
January 9th, 2013, 09:23 PM
#8
Registered User
Join Date: Jan 2013
Posts: 4
Sawadee Kup -
There is still more than adequate oil vapor in the valve train area as well as normal oil splash to lubricate the valve stems.
The positive crankase ventilization valve is just part of a long ago implemented process of controlling the vapors from going straight to the atmosphere here in the USA.
In case you ask - Long ago way north out of Udorn Thani and NKP too.
Sawadee Kup -
Cob Ku Ma
IOG
There is still more than adequate oil vapor in the valve train area as well as normal oil splash to lubricate the valve stems.
The positive crankase ventilization valve is just part of a long ago implemented process of controlling the vapors from going straight to the atmosphere here in the USA.In case you ask - Long ago way north out of Udorn Thani and NKP too.
Sawadee Kup -
Cob Ku Ma
IOG
January 9th, 2013, 10:43 PM
#9
Sawadee Kup -
There is still more than adequate oil vapor in the valve train area as well as normal oil splash to lubricate the valve stems. The positive crankase ventilization valve is just part of a long ago implemented process of controlling the vapors from going straight to the atmosphere here in the USA.
In case you ask - Long ago way north out of Udorn Thani and NKP too.
Sawadee Kup -
Cob Ku Ma
IOG
There is still more than adequate oil vapor in the valve train area as well as normal oil splash to lubricate the valve stems.
The positive crankase ventilization valve is just part of a long ago implemented process of controlling the vapors from going straight to the atmosphere here in the USA.In case you ask - Long ago way north out of Udorn Thani and NKP too.
Sawadee Kup -
Cob Ku Ma
IOG
both side of valve cover not connect anything.
January 9th, 2013, 10:56 PM
#10
Registered User
Join Date: Dec 2012
Location: South Florida
Posts: 41
Although a "pollution thing", that doesn't mean you should eliminate it. It's a closed system that relieves the pressures in the crankcase and keeps those fumes in the engine to be burned, rather than letting them into the air. Don't ever eliminate it, or the unrelieved pressure will push oil all kinds of places you don't want it. You could convert back to the older style open system, but what's the point? The PVC does not rob horsepower or cause drivability issues (unless it is plugged up).
Good post, had this happen first-hand.
Thread
Thread Starter
Forum
Replies
Last Post
