PCV venting to engine bay?
07-08-2014, 02:51 PM
#22
Remember. Do this only on an old engine where wear is not a concern. When you defeat the evacuation function of the PCV system, then your only venting pressure. All the damaging combustion byproducts then are left to accumulate and concentrate in the engine oil and crankcase. It is critical these compounds are evacuated, or removed as soon as they enter as blow-by before they have a chance to settle and collect:
If you doubt this, do an oil analysis after running with it defeated for 5 k miles.
If you doubt this, do an oil analysis after running with it defeated for 5 k miles.
07-09-2014, 02:52 AM
#23
Senior Member
One more year and mine will no longer get emissions tested. That is when I will take the unit in question and make dreadful changes that many will consider "environmentally irresponsible". In other words, I will put it back together like it should have been in the first place.
07-09-2014, 05:09 AM
#24
The pickup runs fine, it blows oil into the airbox. I come here looking for some answers and all I get is a pissing contest from all of you so why don't you just cram this forum up yer ***!
Good bye and enjoy all your project pickups as the continue to turn into rust because that is where every last one of them is headed. It is just a matter of time.
07-09-2014, 06:19 AM
#25
Who says I don't know what it does? I know exactly what it does and I also know that it was a haphazard design in the first place and that is why it has failed. Now I can put it back to original but what is the point unless I take the engine apart and completely overhaul it? Or I might just install an old 2 stroke Detroit Diesel in it with a 5 speed main box and a 4 speed auxiliary. Why not? It is only money after all!
The pickup runs fine, it blows oil into the airbox. I come here looking for some answers and all I get is a pissing contest from all of you so why don't you just cram this forum up yer ***!
Good bye and enjoy all your project pickups as the continue to turn into rust because that is where every last one of them is headed. It is just a matter of time.
07-09-2014, 01:40 PM
#26
Senior Member
Seems to me he said he didn't know exactly what its supposed to do. If not well my mistake. The point is unless its leaking or stuck it doesn't do anything to performance. And its a pretty reliable system. Sorry if I prefer fixing cars to throwing parts in the trash. Like Forge said if you don't want real advise good riddance. You can go anywhere and find someone to blow smoke up your tailpipe and tell you how awesome you are for yanking parts off.
Last edited by Warlockk; 07-09-2014 at 01:43 PM.
07-11-2014, 09:48 AM
#27
Back to the original poster's question - it's not a problem as long as the air is being filtered before it enters the engine. Make sure that the hole in the airbox for the hose is plugged so that you don't pull unfiltered air into the intake from the hole.
All in all, the hose is better, but not an emergency.
Many people will change it like yours is because they get oil migrating up the hose. This is usually caused by a plugged pcv valve or other problem (such as poor vacuum to the pcv system) which is allowing positive pressure to build in the crankcase system, or at least not enough negative pressure to overcome the bit of vacuum at the airbox.
To make sense of that remember that "positive crankcase ventilation" is designed to create 'negative crankcase pressure'.
Positive pressure in the crankcase system (which includes the oilpan, rocker and lifter galleys, timing case, etc) will cause oil to be pushed up past the rings and also out seals and gaskets. That's not good, that's what that system is designed to prevent.
A good working pcv system will help avoid oil consumption.
All in all, the hose is better, but not an emergency.
Many people will change it like yours is because they get oil migrating up the hose. This is usually caused by a plugged pcv valve or other problem (such as poor vacuum to the pcv system) which is allowing positive pressure to build in the crankcase system, or at least not enough negative pressure to overcome the bit of vacuum at the airbox.
To make sense of that remember that "positive crankcase ventilation" is designed to create 'negative crankcase pressure'.
Positive pressure in the crankcase system (which includes the oilpan, rocker and lifter galleys, timing case, etc) will cause oil to be pushed up past the rings and also out seals and gaskets. That's not good, that's what that system is designed to prevent.
A good working pcv system will help avoid oil consumption.
07-11-2014, 10:02 AM
#28
Back to the original poster's question - it's not a problem as long as the air is being filtered before it enters the engine. Make sure that the hole in the airbox for the hose is plugged so that you don't pull unfiltered air into the intake from the hole.
All in all, the hose is better, but not an emergency.
Many people will change it like yours is because they get oil migrating up the hose. This is usually caused by a plugged pcv valve or other problem (such as poor vacuum to the pcv system) which is allowing positive pressure to build in the crankcase system, or at least not enough negative pressure to overcome the bit of vacuum at the airbox.
To make sense of that remember that "positive crankcase ventilation" is designed to create 'negative crankcase pressure'.
Positive pressure in the crankcase system (which includes the oilpan, rocker and lifter galleys, timing case, etc) will cause oil to be pushed up past the rings and also out seals and gaskets. That's not good, that's what that system is designed to prevent.
A good working pcv system will help avoid oil consumption.
All in all, the hose is better, but not an emergency.
Many people will change it like yours is because they get oil migrating up the hose. This is usually caused by a plugged pcv valve or other problem (such as poor vacuum to the pcv system) which is allowing positive pressure to build in the crankcase system, or at least not enough negative pressure to overcome the bit of vacuum at the airbox.
To make sense of that remember that "positive crankcase ventilation" is designed to create 'negative crankcase pressure'.
Positive pressure in the crankcase system (which includes the oilpan, rocker and lifter galleys, timing case, etc) will cause oil to be pushed up past the rings and also out seals and gaskets. That's not good, that's what that system is designed to prevent.
A good working pcv system will help avoid oil consumption.
Good contribution!