*** Oil in the throttle body ***
Thread Starter
Banned
Joined: May 2004
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From: Richmond Hill, Ontario
2003 E55 AMG
Arghhh!! Small snag... Ok.. Big snag...
I didn't do my homework too good on this project. I got as far as mounting the bracket for the catch can..
The stock PCV hose that runs from the driver's side valve cover to the throttle body intake hose is approx 0.75" O.D... Inner diameter is somewhere between 0.5" and 0.625".. Meanwhile, the hose and fittings that AMW and every other Catch can supplies is 3/8"...
I need some advice.. Do you guys think I would be introducing a restriction if I try to find something to adapt the 0.75" hose to the 3/8" connector on the catch can?
If so, should I try to get the catch can re-drilled and tapped for a 0.75" hole and fitting?
Let me know what your opinions are...
I didn't do my homework too good on this project. I got as far as mounting the bracket for the catch can..
The stock PCV hose that runs from the driver's side valve cover to the throttle body intake hose is approx 0.75" O.D... Inner diameter is somewhere between 0.5" and 0.625".. Meanwhile, the hose and fittings that AMW and every other Catch can supplies is 3/8"...
I need some advice.. Do you guys think I would be introducing a restriction if I try to find something to adapt the 0.75" hose to the 3/8" connector on the catch can?
If so, should I try to get the catch can re-drilled and tapped for a 0.75" hole and fitting?
Let me know what your opinions are...
Senior Member
Joined: Nov 2004
Posts: 375
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From: So. Cal.
2006 CLS55-030, 2002 BMW 540 Wagon, 1995 VW Jetta GLX
Yes !
vrus - Yes, go ahead and just re-tap the Catch Can to the next larger NPT. Air volume, when in vacuum, is very sensitive to Dia. size, and the purpose of this exercise is to evacuate as much of the crank case pressure as possible along with capturing as much of the oil mist as possible. 
- Bob
- Bob
Thread Starter
Banned
Joined: May 2004
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From: Richmond Hill, Ontario
2003 E55 AMG
Originally Posted by Evolution Marine
vrus - Yes, go ahead and just re-tap the Catch Can to the next larger NPT. Air volume, when in vacuum, is very sensitive to Dia. size, and the purpose of this exercise is to evacuate as much of the crank case pressure as possible along with capturing as much of the oil mist as possible. - Bob
- BobShould be able to get it done this weekend.. Hopefully..
Senior Member
Joined: Nov 2004
Posts: 375
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From: So. Cal.
2006 CLS55-030, 2002 BMW 540 Wagon, 1995 VW Jetta GLX
3/4" NPT to Large
vrus - I think when you get to Home Depot you will find that a 3/8" NPT fitting will be large enough with a 1/2" hose barb on the other end. The current size fitting looks to be 1/4" NPT. Anyway NPT call out sizes are deceiving. - Bob
- Bob
Last edited by Evolution Marine; Sep 3, 2005 at 05:33 PM.
Thread Starter
Banned
Joined: May 2004
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From: Richmond Hill, Ontario
2003 E55 AMG
Install is delayed pending the acquiring of some vital tools..
I went to Home Depot yesterday and after trying a few different NPT fittings, the 0.5" with the 5/8" barb is the proper fit. The 5/8" fitting seems to match the diameter of the stock hose.
Here are the issues:
- The stock hose has a flare on the end of it. It looks like the flare fitting is 0.75" on the throttle body and the crank case. I dont know if I can press a 5/8" hose onto the 0.75" fitting on the throttle body tube.
- I cant find the plastic NPT fittings. All I found was the brass ones which I dont really want to use. I need to locate an automotive parts store that has plastic NPT fittings in straight and 90degree shapes.
Also, I couldnt find a proper tap size and since Monday is a civic holiday up here I have to wait until Tuesday to pick up the tap and other hardware and try this again.
Any idea on what to do about the flare fitting?
I went to Home Depot yesterday and after trying a few different NPT fittings, the 0.5" with the 5/8" barb is the proper fit. The 5/8" fitting seems to match the diameter of the stock hose.
Here are the issues:
- The stock hose has a flare on the end of it. It looks like the flare fitting is 0.75" on the throttle body and the crank case. I dont know if I can press a 5/8" hose onto the 0.75" fitting on the throttle body tube.
- I cant find the plastic NPT fittings. All I found was the brass ones which I dont really want to use. I need to locate an automotive parts store that has plastic NPT fittings in straight and 90degree shapes.
Also, I couldnt find a proper tap size and since Monday is a civic holiday up here I have to wait until Tuesday to pick up the tap and other hardware and try this again.
Any idea on what to do about the flare fitting?
Senior Member
Joined: Nov 2004
Posts: 375
Likes: 1
From: So. Cal.
2006 CLS55-030, 2002 BMW 540 Wagon, 1995 VW Jetta GLX
Anything You Want & More
vrus - Mc Master Carr (link Below) is an Industrial Supply House. It will have the Nylon Fittings you want and also coupler fittings to reduce from 3/4" down to 5/8" hose. As a suggestion, You might cut the flare fitting off the stock hose and use a coupler fitting to join the old hose with a piece of new hose. They also carry a neat crimp style hose clamp system that avoids those bulky screw type hose clamps. Keep up the good work and be patient the Mc Master Carr catalogue is very, very large and if you are like me you will be looking for something and come accross something else that will spark your imagination and you will wonder off in another direction for a little bit. The catalogue is like a candy store for anyone who likes to build/modify things. - Bob
http://www.mcmaster.com/
- Bobhttp://www.mcmaster.com/
Thread Starter
Banned
Joined: May 2004
Posts: 3,797
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From: Richmond Hill, Ontario
2003 E55 AMG
Originally Posted by Evolution Marine
vrus - Mc Master Carr (link Below) is an Industrial Supply House. It will have the Nylon Fittings you want and also coupler fittings to reduce from 3/4" down to 5/8" hose. As a suggestion, You might cut the flare fitting off the stock hose and use a coupler fitting to join the old hose with a piece of new hose. They also carry a neat crimp style hose clamp system that avoids those bulky screw type hose clamps. Keep up the good work and be patient the Mc Master Carr catalogue is very, very large and if you are like me you will be looking for something and come accross something else that will spark your imagination and you will wonder off in another direction for a little bit. The catalogue is like a candy store for anyone who likes to build/modify things. - Bob
http://www.mcmaster.com/
- Bobhttp://www.mcmaster.com/
Any chance you can help me locate what I am searching for.
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Senior Member
Joined: Nov 2004
Posts: 375
Likes: 1
From: So. Cal.
2006 CLS55-030, 2002 BMW 540 Wagon, 1995 VW Jetta GLX
I Found It
vrus - Look on page 111 for the Nylon Fittings and reducers, and look on page 118 for the Pinch Clamp System I mentioned (these clamps give it an OEM look, can be a little expensive to get into the system at first). - Bob
- Bob
Thread Starter
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Joined: May 2004
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From: Richmond Hill, Ontario
2003 E55 AMG
Originally Posted by Evolution Marine
vrus - Look on page 111 for the Nylon Fittings and reducers, and look on page 118 for the Pinch Clamp System I mentioned (these clamps give it an OEM look, can be a little expensive to get into the system at first). - Bob
- BobI bought a complete 60piece tap kit but as luck would have it, 1/2" tap is the biggest it has..
I need to locate a 1/2" barb to 1/2" NPT fitting in order to make this work. If I can't get it locally (which it doesnt look like I will be able to) I will have to order from McMaster.
This is taking alot longer than I wanted, but I want to make sure I do it right.
Thread Starter
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From: Richmond Hill, Ontario
2003 E55 AMG
This was supposed to be a SMALL project.. Quick fit and off I go....
Yeah right..
I want to make sure I do this right so I need to ask some opinions from the "engine builder" types on here...
I've seen some 700rwhp and 800rwhp supercharged corvettes install these AMW catch cans right out of the box.. AMW ships with a 3/8" hose.
If you are supposed to evacuate the PCV vapours as quickly as possible, why do all these high-horsepower cars run 3/8" hose meanwhile the E55 has a 5/8" hose????
I've got fittings in my possession that will accommodate a 1/2" hose and I also have the 1/2" tap necessary. What would be the negatives to me installing this 1/2" hose rather than trying to get a proper 5/8" hose and a 3/4" tap to drill out the threads ( I cant find a 3/4" tap that I can use anywhere)????
HELP!!
Yeah right..
I want to make sure I do this right so I need to ask some opinions from the "engine builder" types on here...
I've seen some 700rwhp and 800rwhp supercharged corvettes install these AMW catch cans right out of the box.. AMW ships with a 3/8" hose.
If you are supposed to evacuate the PCV vapours as quickly as possible, why do all these high-horsepower cars run 3/8" hose meanwhile the E55 has a 5/8" hose????
I've got fittings in my possession that will accommodate a 1/2" hose and I also have the 1/2" tap necessary. What would be the negatives to me installing this 1/2" hose rather than trying to get a proper 5/8" hose and a 3/4" tap to drill out the threads ( I cant find a 3/4" tap that I can use anywhere)????
HELP!!
Super Member
Joined: Aug 2005
Posts: 665
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Originally Posted by vrus
If you are supposed to evacuate the PCV vapours as quickly as possible, why do all these high-horsepower cars run 3/8" hose meanwhile the E55 has a 5/8" hose????
Originally Posted by vrus
I've got fittings in my possession that will accommodate a 1/2" hose and I also have the 1/2" tap necessary. What would be the negatives to me installing this 1/2" hose rather than trying to get a proper 5/8" hose and a 3/4" tap to drill out the threads ( I cant find a 3/4" tap that I can use anywhere)????
HELP!!
HELP!!
Senior Member
Joined: Nov 2004
Posts: 375
Likes: 1
From: So. Cal.
2006 CLS55-030, 2002 BMW 540 Wagon, 1995 VW Jetta GLX
Use The 1/2: NPT Tap
vrus - get a 5/8" hose barb fitting with a 1/2" NPT thread on the other end (standard fitting) and you will solve this issue. - Bob
- Bob
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Joined: Jul 2005
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From: S.E. FLA.
05 ML-500 , 03 CLK5.5 AMG has left the Garage
Metric Fittings
Hi Guy's I hope I'm not too late. here's 2 sites to look at . www.krontec.de I've had to go here for metric hose & fittings. . This may not be your issue ?? The US Distributor
www.fluidsysteminnovations.com. If not . it may spark some thought for future projects. ___PTE___
www.fluidsysteminnovations.com. If not . it may spark some thought for future projects. ___PTE___
Thread Starter
Banned
Joined: May 2004
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From: Richmond Hill, Ontario
2003 E55 AMG
Originally Posted by PTE
Hi Guy's I hope I'm not too late. here's 2 sites to look at . www.krontec.de I've had to go here for metric hose & fittings. . This may not be your issue ?? The US Distributor
www.fluidsysteminnovations.com. If not . it may spark some thought for future projects. ___PTE___
www.fluidsysteminnovations.com. If not . it may spark some thought for future projects. ___PTE___
I got quoted $710 CDN for the parts for the stock oil cooler so I'll see what it will cost to build a custom one.
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From: Portsmouth, NH
none
In observation of the Halloween holiday I'm resurecting an old dead post. VRUS.....whats up with this little prodject?? Having a slightly similar F/I benz V8 I've been tooling with a couple different options for venting the PCV system.
Senior Member
Joined: Jan 2007
Posts: 294
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From: Orange County
2006 E55
VRUS.........did you ever research this any further? When installing the EVO Phenolic Spacers I found traces of oil in the throttle body and found oil in and around the head and surge tanks. I know you have seen this and this is not good for making power.
I dont see any of the so called "euro tuners" resolving true issues just selling wheels and generic tunes.
I just ordered the AMW oil catch can for the SRT8, due to a severe oil contamination in the manifold. Upon removing the manifold oil puddled out!! Both vehicles "puff" blue smoke occassionally on start up and got me researching the issue. I guess I'll try to adapt something but had to resurrect your thread.
http://www.accmachtech.com/pcvcatchcans.htm
I dont see any of the so called "euro tuners" resolving true issues just selling wheels and generic tunes.
I just ordered the AMW oil catch can for the SRT8, due to a severe oil contamination in the manifold. Upon removing the manifold oil puddled out!! Both vehicles "puff" blue smoke occassionally on start up and got me researching the issue. I guess I'll try to adapt something but had to resurrect your thread.
http://www.accmachtech.com/pcvcatchcans.htm
Last edited by sgtstanko; Apr 29, 2007 at 02:52 PM.
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From: Carefree az usa
2020 S560,14 ml350, 03 sl55, silver, pano, slr cams, evo headers, lsd, 2019 s63 cab.
there are a bunch of catch cans out there. i was looking in the engine bay of the s55, haven't even looked in the sl55 yet, and there seems to be little room open for one of these catch cans. where are the pvc lines near that would be convienent to fit a catch can. what size are the catch cans anyone has used. any info would be nice.
Thread Starter
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Posts: 3,797
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From: Richmond Hill, Ontario
2003 E55 AMG
Sorry bud!! My sincere apologies.. this thread got lost in the list and I didnt notice it...
I *had* the catch can installed.. I had to remove it becuase in order to install it properly, you need to feed 2 lines into it... and 2 lines out.. The catch can that I have is pretty much the best one you can buy in terms of design.
The hose that runs from the driver's side manifold needs to be routed there, and so does the hose that runs into the bottom of the TB. Then you need to plumb 2 lines back from the catch can into these 2 locations.
On a small catch can like the one I have its hard to get all of these to fit.. especially since the hoses are 0.5" so you need to drill & tap some pretty big NPT fittings to make it work..
I'm looking for a way to make this work, but I might buy a larger unit or have one custom made to my specs..
Sorry I cant be more helpful.. this is one of these things that I had to put on the backburner in order to work on some other priorities..
I *had* the catch can installed.. I had to remove it becuase in order to install it properly, you need to feed 2 lines into it... and 2 lines out.. The catch can that I have is pretty much the best one you can buy in terms of design.
The hose that runs from the driver's side manifold needs to be routed there, and so does the hose that runs into the bottom of the TB. Then you need to plumb 2 lines back from the catch can into these 2 locations.
On a small catch can like the one I have its hard to get all of these to fit.. especially since the hoses are 0.5" so you need to drill & tap some pretty big NPT fittings to make it work..
I'm looking for a way to make this work, but I might buy a larger unit or have one custom made to my specs..
Sorry I cant be more helpful.. this is one of these things that I had to put on the backburner in order to work on some other priorities..
VRUS.........did you ever research this any further? When installing the EVO Phenolic Spacers I found traces of oil in the throttle body and found oil in and around the head and surge tanks. I know you have seen this and this is not good for making power.
I dont see any of the so called "euro tuners" resolving true issues just selling wheels and generic tunes.
I just ordered the AMW oil catch can for the SRT8, due to a severe oil contamination in the manifold. Upon removing the manifold oil puddled out!! Both vehicles "puff" blue smoke occassionally on start up and got me researching the issue. I guess I'll try to adapt something but had to resurrect your thread.
http://www.accmachtech.com/pcvcatchcans.htm
I dont see any of the so called "euro tuners" resolving true issues just selling wheels and generic tunes.
I just ordered the AMW oil catch can for the SRT8, due to a severe oil contamination in the manifold. Upon removing the manifold oil puddled out!! Both vehicles "puff" blue smoke occassionally on start up and got me researching the issue. I guess I'll try to adapt something but had to resurrect your thread.
http://www.accmachtech.com/pcvcatchcans.htm
Senior Member
Joined: Jan 2007
Posts: 294
Likes: 0
From: Orange County
2006 E55
PVC System Only one can needed
Sorry bud!! My sincere apologies.. this thread got lost in the list and I didnt notice it...
I *had* the catch can installed.. I had to remove it becuase in order to install it properly, you need to feed 2 lines into it... and 2 lines out.. The catch can that I have is pretty much the best one you can buy in terms of design.
The hose that runs from the driver's side manifold needs to be routed there, and so does the hose that runs into the bottom of the TB. Then you need to plumb 2 lines back from the catch can into these 2 locations.
On a small catch can like the one I have its hard to get all of these to fit.. especially since the hoses are 0.5" so you need to drill & tap some pretty big NPT fittings to make it work..
I'm looking for a way to make this work, but I might buy a larger unit or have one custom made to my specs..
Sorry I cant be more helpful.. this is one of these things that I had to put on the backburner in order to work on some other priorities..
I *had* the catch can installed.. I had to remove it becuase in order to install it properly, you need to feed 2 lines into it... and 2 lines out.. The catch can that I have is pretty much the best one you can buy in terms of design.
The hose that runs from the driver's side manifold needs to be routed there, and so does the hose that runs into the bottom of the TB. Then you need to plumb 2 lines back from the catch can into these 2 locations.
On a small catch can like the one I have its hard to get all of these to fit.. especially since the hoses are 0.5" so you need to drill & tap some pretty big NPT fittings to make it work..
I'm looking for a way to make this work, but I might buy a larger unit or have one custom made to my specs..
Sorry I cant be more helpful.. this is one of these things that I had to put on the backburner in order to work on some other priorities..
So I'am lead to believe that the hose on the drivers side is the make up air for the crankcase. That hose can be removed from the intake tract and a filter attached to the end. I havent located it yet BUT the hose under VACUUM....will be attached to the manifold or directly to the intake tract and it will be connect to this point by a PCV valve. When they are not working properly the crankcase pressure will "backup" and find its way (path of least resistance) to the one leading to the throttle body.
So the ideal set up is provide make up crankcase air (as designed) from the hose currently under the throttle body tube but disconnect it and put a K&N type filter on the end....(also plugging this hole)...then locate/place a catch can between the hose that connect the PCV valve to the vacuum source.
Super Member
Joined: Aug 2005
Posts: 953
Likes: 2
2004 E55
VRUS.......only one catch can is required. The hose that has the Positive Crankcase Ventilation Valve is the one that a oil seperator/catch can is required! The other hose is for fresh air that is required to complete the circle of bad contaminated crankcase gas out and the other completes the circle by providing a source of new/filtered clean air.
So I'am lead to believe that the hose on the drivers side is the make up air for the crankcase. That hose can be removed from the intake tract and a filter attached to the end. I havent located it yet BUT the hose under VACUUM....will be attached to the manifold or directly to the intake tract and it will be connect to this point by a PCV valve. When they are not working properly the crankcase pressure will "backup" and find its way (path of least resistance) to the one leading to the throttle body.
So the ideal set up is provide make up crankcase air (as designed) from the hose currently under the throttle body tube but disconnect it and put a K&N type filter on the end....(also plugging this hole)...then locate/place a catch can between the hose that connect the PCV valve to the vacuum source.
