I just got my plenum today and instlled it. It was fairly simple and took about 1.5hrs by myself. Anyways, when I took my plenum off it was kind of dirty with an oily substance on the inside. There wasnt a lot of this, but it was there. Is this normal? What is the fluid that is in the hose under the TB(the small hose)? I took it for a spin and it felt stronger up top. Need to get to the track to find out.

 

mine alos had the oils on the lower plenum, i hope this doesn;t build up.

 

You need an oil catch can. If you have an after market intake like injen cai

 

yeap i have that. where do i get a catch can? any particular good one?

 

Greddy sells one. you can go to any greddy local dealers near you it looks like this. I saw it on intense motorsports site.

 

hmmm. I also have a Injen intake. How do you hook it up. Or do you have pics?

 

Replaces the small filter thats inline with the rubber hose (PVC hose).

 

So any recommendations of any others better/worse than the Greddy?

 

brand really doesnt matter I have seen catch cans made of beer cans. All of the catch cans have the same design.

 

if you have the injen CAI you will need a 15mm catch can.

 

So is the can found here 15mm?

 

thanks for the help guys, but i won't order from IMRacing

 

I too have had oil coming through the PCV system. This problem mainly comes from high RPM driving . The oil does tend to pool in the intake manifold and is not good.

The fix as mentioned above is the oil catch can inline with the PCV system to remove the oil from entering the manifold.

I ordered an OBX catch can (about half the price of GReddy and others). I have been very impressed with the quality and it works well. Check them out. (No I have nothing to do with this company). http://www.2kracing.com/cgi-bin/part...=3559337_27565

 

what's the diff between the 9mm and 15mm catch cans, and what's the t bracket? here's where i was lookin:

http://www.optauto.com/webstore/prod...ber=2&last=876

 

Where is the oil coming from?

 

The oil comes from the valve covers where the PCV valve is. During high RPM driving there can be a lot of vacuum at the PCV valve opening. Some oil can get sucked into the PCV valve and goes into the intake manifold.

Generally there is some baffling in the valve cover to help prevent this, but it may not be perfect. Many cars have this problem when driven a lot at high RPM. Most of the time a little oil doesn't hurt anything. However, having seen how much oil was in the intake manifold after 1 autoX I was surprised and wanted to fix it.

If the oil continues to be deposited into the manifold over a period of time it will sludge up the manifold, intake runners and backsides of the valves -- not nice.

A lot of turbo cars have this problem as well and can be a lot worse depending on the PCV system design.

 

cleaning out your intake plenum stock or modded is a good thing every how ever many miles you want to do such a thing..

 

Next dumb question. Where/what is the pcv valve? Is it because I have an Injen CAI that I am having this problem?

 

If you are facing the engine, the PCV valve is located on the left valve cover near the front of the engine.

No, the Injen intake has nothing to do with it.

 

the only problem with the greddy catch can is that it doesnt have a divider in the middle, I belive the moroso does.