Question About Intake Manifold

[Nader]

The other day after removing my throttle body, i noticed a small amount of oil build up at the front of the intake manifold. It was a small pool of oil right at the front end of the manifold at the edge where it buts against the throttle body. i have read before that the crankcase is vented by recirculating the air into the air intake which creates vacuum but I was surprised to see actual Oil there.

I dont really drive the car too hard or drive to the limits at the track. The car is an 04 with 15,000 miles.

Questions - is this bad for the car to be ingesting oil? I have heard of a seperate oil tank to collect the oil but i have also heard that the crankcase needs to be vented via vaccuum from the intake.

Any advice would be appreciated.

 

[mjorgensen Woodhouse]

Tom,

There is a possibility to get some oil past the PVC valve. You may want to check and or replace it if there is an accessive amount of oil. It is bad to ingest oil as it acts as an octane lowering fluid for fuel. I would not suggest the catch can method though as the engine does need a bit of vaccuum to work properly.

Mark

 

[CarDude]

The other day after removing my throttle body, i noticed a small amount of oil build up at the front of the intake manifold. It was a small pool of oil right at the front end of the manifold at the edge where it buts against the throttle body. i have read before that the crankcase is vented by recirculating the air into the air intake which creates vacuum but I was surprised to see actual Oil there.

I dont really drive the car too hard or drive to the limits at the track. The car is an 04 with 15,000 miles.

Questions - is this bad for the car to be ingesting oil? I have heard of a seperate oil tank to collect the oil but i have also heard that the crankcase needs to be vented via vaccuum from the intake.

Any advice would be appreciated.

I added a catch can to my SRT-10 Ram after the engine was rebuilt. You should see the steam coming out of the filter. Here is a link to the catch can I got from JMB Performance. http://jmbperformance.com/store/product_info.php?cPath=22_97&products_id=82

Here is what it looks like on my truck...I also did a bunch of his powdercoating as well. http://www.vtcoa.com/forums/attachment.php?attachmentid=17107&d=1186019174

 

[Viper X]

CarDude,

I bought one of these too. Fine for the street, too small for the track. It overflows and makes an oily mess.

Hey Mark,

Can you explain to us where the PCV valve is located and how it works on a Gen III?

Thanks,

Dan

 

[CarDude]

CarDude,

I bought one of these too. Fine for the street, too small for the track. It overflows and makes an oily mess.

Hey Mark,

Can you explain to us where the PCV valve is located and how it works on a Gen III?

Thanks,

Dan

Does that mean all the oil goes into your intake instead?

 

[mjorgensen Woodhouse]

The PVC system works to INSURE that the vapors are pulled from the crankcase on the driverside PCV valve. If this is not working or removed all the oil pressure OR ring blow by in a worn motor will be forced out the passenger side valve cover. This is probably why the over flow can is filling with oil. Also when this happens it is more likely to occur if you are running extra oil at the track. If not you are probably risking an oil starvation failure from low oil!

The PVC system is there to insure that the oil and vapor are evacuated properly and DO NOT make it back to the intake. I would not reccomment disconnecting it.