Black Gold, Texas Tea I think NOT! Ideas welcome?

Pulled my Ford Racing intake to relocate the IAT sensor from the MAF location to an intake runner. Frankly I was very shocked at the amount of oil that had accumulated in the intake. I previously had a JLT catch can on the driver’s side until the forged motor and Ford Racing Intake went into the car in May 2013, but because the original hoses were no longer suitable the JLT was left off. I put the driver’s side JLT Oil Separator back on in July this year. When I removed the intake yesterday there was a little oil in the separator but not much.

However, this is what I found pooled in the intake. In fact there was even more than this as another pool of oil was formed out of the throttle body when the back of the intake was tipped up.



Current configuration has the passenger side valve cover connected with a 6AN hose to the Vortech intake tube.



The driver side uses the original version JLT separator with 10AN hoses.



I am not comfortable with the volume of oil that has accumulated in the intake over 4 years of limited use, less than 15K kilometres in total.

With the gen 1 JLT back on the driver side do you think I am good to go or what other action do you recommend?

Hey Scott, damn that is a ton of oil! Why don't you just run breathers that vent to atmosphere? I have a -12an line from each valve cover running to two catch cans with breathers located behind the front bumper on the PS and have never found a drop of oil in any of my intakes.

those separators do nothing.

Blower motors pass a lot of oil.

I've seen 2V trucks with waaaaaaaaaaaaaay more oil in the bottom of the intake. I wouldn't be bothered by that amount at all, especially with a boosted car.

eighty6gt said:

those separators do nothing.

Blower motors pass a lot of oil.

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Maybe the JLT separators suck. But I ran Bob's catch cans and they worked really good. Even after I blew my engine the intake was dry. But the can was just about full.

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Have you done the update to the JLT Oil Separator? JLT has been updating their separators for pretty much free for a while. They corrected their screen design so it traps oil better.

Bob’s FTW

I used to run two JLT separators inline one after the other. The second one caught almost as much oil as the first, which tells me they are less than 50% effective. If I ever put a blower on my current ride I will use a different brand.

On my Coyote, the passenger-side collector picks up orders of magnitude more oil than the driver's. In fact, I wouldn't even bother installing one on the driver-side again unless the car was going to be heavily tracked on a road course. Street driving, drag racing, and even heavy autocross use produce almost zero oil through that side. (Note that my engine is also still NA.)

I also agree that Bob's Autosport makes really good catch cans; that's the brand I use.

Sky Render said:

On my Coyote, the passenger-side collector picks up orders of magnitude more oil than the driver's. In fact, I wouldn't even bother installing one on the driver-side again unless the car was going to be heavily tracked on a road course. Street driving, drag racing, and even heavy autocross use produce almost zero oil through that side. (Note that my engine is also still NA.)

I also agree that Bob's Autosport makes really good catch cans; that's the brand I use.

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Coyote PCV systems run opposite of the 3 valve, no?

07 Boss said:

Coyote PCV systems run opposite of the 3 valve, no?

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Well, crap, I thought the OP had a Coyote.

Hi Scott,

It looks like your running it the way Vortech shows in the manual, passenger valve cover going to the intake of the blower. Since you said oil was coming out of the TB, you may want to check your blower and piping after the blower exit. It's possible your getting the oil from the passenger side and sending it through the blower. The JLT on the driver side might be doing it's job but you may want one on the passenger side. I wouldn't have any possible route for the oil to get back into the intake system, I did run this like you have but changed it to breathers because of this. Now that your moving the IAT sensor to the intake it would be even more important keeping the intake air clean.

Here is where I put the IAT on the FRPP Intake, pics are from my old setups.



Ran valve covers to this Air/Oil Seperator by the driver headlight where you don't get any of the smell running inside the cabin.



Replaced the oil fill with a breather fitting and ran that to the driver side breather. The original valve breather I ran to a smaller oil/air separator by the battery to get as much pressure relief as possible.

Wild White Pony said:

Hi Scott,

It looks like your running it the way Vortech shows in the manual, passenger valve cover going to the intake of the blower. Since you said oil was coming out of the TB, you may want to check your blower and piping after the blower exit. It's possible your getting the oil from the passenger side and sending it through the blower. The JLT on the driver side might be doing it's job but you may want one on the passenger side. I wouldn't have any possible route for the oil to get back into the intake system, I did run this like you have but changed it to breathers because of this. Now that your moving the IAT sensor to the intake it would be even more important keeping the intake air clean.

Here is where I put the IAT on the FRPP Intake, pics are from my old setups.

Ran valve covers to this Air/Oil Seperator by the driver headlight where you don't get any of the smell running inside the cabin.

Replaced the oil fill with a breather fitting and ran that to the driver side breather. The original valve breather I ran to a smaller oil/air separator by the battery to get as much pressure relief as possible.

Click to expand...

I think the issue is with centris and turbos is that under boost there is pressure instead of vacuum. So when positive pressure/boost is present the pcv valve remains closed. Then you start to develop crankcase pressure. Where does this pressure go? Out through the open passenger side intake that usually draws clean air into the crankcase. The flow reverses when there is positive pressure in both the manifold and crankcase.

One way around this issue is the oil cap breather by CFM with a built in check valve. This will help relieve crankcase pressure in these situations and vent it straight to the atmosphere.

Hey Scott
I haven't checked the other site, but the video I was referencing that Jeremy made showed a taken apart valve cover the internal check valve on the driver side would only open when there was positive crack case pressure to allow it to vent, under vacuum it would close, if a source of vacuum was put on the outside it would also close.
The passanger side is open. Jeremy suggest that with the flow restrictions on the driver side head and the small size of the passanger that on boosted cars it's advisable to vent the oil fill cap as well.

From my own experience with hoses on both valve covers at idle I smell more fumes out of the passanger side.
I was all set to buy a $400 catch can RX setup until seeing how it worked then realized it's a waste of ford designed it so you can't pull a vacuum on the crankcase anyways and the main goal is just venting effectively.

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swflastang05 said:

Hey Scott, damn that is a ton of oil! Why don't you just run breathers that vent to atmosphere? I have a -12an line from each valve cover running to two catch cans with breathers located behind the front bumper on the PS and have never found a drop of oil in any of my intakes.

Click to expand...

Kyle venting to atmosphere is a huge no no in Ontario, pretty sure they just pull the plates of the car and I am done like dinner. I thought about it and actually picked up an Allstar Performance breather tank off the forum.

702GT said:

Have you done the update to the JLT Oil Separator? JLT has been updating their separators for pretty much free for a while. They corrected their screen design so it traps oil better.

Click to expand...

Not yet, JLT was off the car when the vast majority of oil accumulated in the intake. I need to investigate the upgrade.

When I took off the cats of my fox (Vortech charged) the amount of blowby was noticably reduced. But it was a high milage engine. Never had cats on the current engine.

Wild White Pony said:

Hi Scott,

It looks like your running it the way Vortech shows in the manual, passenger valve cover going to the intake of the blower. Since you said oil was coming out of the TB, you may want to check your blower and piping after the blower exit. It's possible your getting the oil from the passenger side and sending it through the blower. The JLT on the driver side might be doing it's job but you may want one on the passenger side. I wouldn't have any possible route for the oil to get back into the intake system, I did run this like you have but changed it to breathers because of this. Now that your moving the IAT sensor to the intake it would be even more important keeping the intake air clean.

Here is where I put the IAT on the FRPP Intake, pics are from my old setups.

Ran valve covers to this Air/Oil Seperator by the driver headlight where you don't get any of the smell running inside the cabin.

Replaced the oil fill with a breather fitting and ran that to the driver side breather. The original valve breather I ran to a smaller oil/air separator by the battery to get as much pressure relief as possible.

Click to expand...

Kurt I checked the Vortech elbow and charge cooler output and they were both clean meaning that the oil is coming from the driver's side. The oil that came out the throttle body was because I lifted the back of the intake and it drained forward.

I am putting mi IAT sensor in exactly the same spot you have.

No no here to vent to atmosphere so I need to work on an effective closed system.