Simple Crank Case Vent?
Thread Starter
Le Mans Master
Joined: Aug 2005
Posts: 7,890
Likes: 0
From: FL
Simple Crank Case Vent?
I found this old post in my search.
Can I just do a breather filter where the oil cap is or do I need a check valve also and catch can? I'd rather just do the easiest effective thing as my engine bay is already complicated.
What kind of damage can not venting the crankcase pressure with FI do to an engine?
Beauty, so the McMaster Carr check valve (flowing towards the TB), and a Campbell Hausfield (sp) separator in line with the PCV valve and leave the valve cover vent going to the air filter like Andy says should do me pretty good right?
Quote:
Originally Posted by AMERICAN_HP
To answer your question Yes AND No....
Typically it is as easy as putting a catch can in-line of the PCV system. UNLESS you have F/I. Then its a little more complicated.
If you are running F/I you want to make sure that you arent only using your stock pcv valve. Cause if you are, the boost can/will overcome the valve and pressurize the crank case.
Most importantly I would install a check valve in line. This way you eliminate that problem.
Heres the link where you can get it. There are more than a few guys on here using this.
http://www.mcmaster.com/ This is the part number you want. "7775K53"
Other than this valve, all you really need to do is use a catch can. You will get a ton of guys telling you all of their "Super" pcv systems, with filters, adjustible vacum valves, electric solonoids, bla bla bla.... Just keep it simple and effective..
Can I just do a breather filter where the oil cap is or do I need a check valve also and catch can? I'd rather just do the easiest effective thing as my engine bay is already complicated.
What kind of damage can not venting the crankcase pressure with FI do to an engine?
Beauty, so the McMaster Carr check valve (flowing towards the TB), and a Campbell Hausfield (sp) separator in line with the PCV valve and leave the valve cover vent going to the air filter like Andy says should do me pretty good right?
Quote:
Originally Posted by AMERICAN_HP
To answer your question Yes AND No....
Typically it is as easy as putting a catch can in-line of the PCV system. UNLESS you have F/I. Then its a little more complicated.
If you are running F/I you want to make sure that you arent only using your stock pcv valve. Cause if you are, the boost can/will overcome the valve and pressurize the crank case.
Most importantly I would install a check valve in line. This way you eliminate that problem.
Heres the link where you can get it. There are more than a few guys on here using this.
http://www.mcmaster.com/ This is the part number you want. "7775K53"
Other than this valve, all you really need to do is use a catch can. You will get a ton of guys telling you all of their "Super" pcv systems, with filters, adjustible vacum valves, electric solonoids, bla bla bla.... Just keep it simple and effective..
Thread Starter
Le Mans Master
Joined: Aug 2005
Posts: 7,890
Likes: 0
From: FL
Melting Slicks
Joined: Dec 2003
Posts: 3,315
Likes: 17
From: Near Jacksonville Fl.
I found this old post in my search.
Can I just do a breather filter where the oil cap is or do I need a check valve also and catch can? I'd rather just do the easiest effective thing as my engine bay is already complicated.
What kind of damage can not venting the crankcase pressure with FI do to an engine?
Beauty, so the McMaster Carr check valve (flowing towards the TB), and a Campbell Hausfield (sp) separator in line with the PCV valve and leave the valve cover vent going to the air filter like Andy says should do me pretty good right?
Quote:
Originally Posted by AMERICAN_HP
To answer your question Yes AND No....
Typically it is as easy as putting a catch can in-line of the PCV system. UNLESS you have F/I. Then its a little more complicated.
If you are running F/I you want to make sure that you arent only using your stock pcv valve. Cause if you are, the boost can/will overcome the valve and pressurize the crank case.
Most importantly I would install a check valve in line. This way you eliminate that problem.
Heres the link where you can get it. There are more than a few guys on here using this.
http://www.mcmaster.com/ This is the part number you want. "7775K53"
Other than this valve, all you really need to do is use a catch can. You will get a ton of guys telling you all of their "Super" pcv systems, with filters, adjustible vacum valves, electric solonoids, bla bla bla.... Just keep it simple and effective..
Can I just do a breather filter where the oil cap is or do I need a check valve also and catch can? I'd rather just do the easiest effective thing as my engine bay is already complicated.
What kind of damage can not venting the crankcase pressure with FI do to an engine?
Beauty, so the McMaster Carr check valve (flowing towards the TB), and a Campbell Hausfield (sp) separator in line with the PCV valve and leave the valve cover vent going to the air filter like Andy says should do me pretty good right?
Quote:
Originally Posted by AMERICAN_HP
To answer your question Yes AND No....
Typically it is as easy as putting a catch can in-line of the PCV system. UNLESS you have F/I. Then its a little more complicated.
If you are running F/I you want to make sure that you arent only using your stock pcv valve. Cause if you are, the boost can/will overcome the valve and pressurize the crank case.
Most importantly I would install a check valve in line. This way you eliminate that problem.
Heres the link where you can get it. There are more than a few guys on here using this.
http://www.mcmaster.com/ This is the part number you want. "7775K53"
Other than this valve, all you really need to do is use a catch can. You will get a ton of guys telling you all of their "Super" pcv systems, with filters, adjustible vacum valves, electric solonoids, bla bla bla.... Just keep it simple and effective..
I set mine up this way in 2001 and still have it the same way and never had any issues with oil or pressurizing the crankcase.
Melting Slicks
Joined: Apr 2003
Posts: 2,285
Likes: 16
From: Nashville TN
the gases will contaminate the oil and cause it to break down.
also increased pressure can cause you to blow the rear seal or as you have seen push the dip stick up.
I added a catch can and mcmaster carr check valve and then vented the valve cover.
also increased pressure can cause you to blow the rear seal or as you have seen push the dip stick up.
I added a catch can and mcmaster carr check valve and then vented the valve cover.
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Thread Starter
Le Mans Master
Joined: Aug 2005
Posts: 7,890
Likes: 0
From: FL
I'm trying to find a metal mesh style breather, not like the k&n material but metal so it doesnt get oil soaked.
Thread Starter
Le Mans Master
Joined: Aug 2005
Posts: 7,890
Likes: 0
From: FL
Melting Slicks
Joined: Dec 2003
Posts: 3,315
Likes: 17
From: Near Jacksonville Fl.
If you have a PCV valve leave it in place, IT IS THE AIR METERING DEVICE.
If you look at the sketch I sent you it will show you where to place everything.
Thread Starter
Le Mans Master
Joined: Aug 2005
Posts: 7,890
Likes: 0
From: FL
Bob can you dumb it down even further for me?
I wont be using a catch can so the diagram is confusing.
I just have the ecs vent so far everything else is stock...I do have the port on the TB capped as well.
is there a line in place already where I'll need to put the check valve?
I wont be using a catch can so the diagram is confusing.
I just have the ecs vent so far everything else is stock...I do have the port on the TB capped as well.
is there a line in place already where I'll need to put the check valve?
Melting Slicks
Joined: Dec 2003
Posts: 3,315
Likes: 17
From: Near Jacksonville Fl.
Just cut into the line coming off the manifold and install the check valve.
Make sure to use clamps on the hose between the manifold and the check valve or it might pop off when under boost.
Ignore the catch can in the diagram and the rest of the system will be just like yours.
However I would highly recommend you rethink running w/o a catch can, if you open you throttle body and look inside with a flash light you will find oil puddled on the floor of the intake.
It's just waiting to get pushed into #7 & 8 cyl. breaking the top ring lands.
Make sure to use clamps on the hose between the manifold and the check valve or it might pop off when under boost.
Ignore the catch can in the diagram and the rest of the system will be just like yours.
However I would highly recommend you rethink running w/o a catch can, if you open you throttle body and look inside with a flash light you will find oil puddled on the floor of the intake.
It's just waiting to get pushed into #7 & 8 cyl. breaking the top ring lands.
