[BluHPP]

I have The EXACT same problem with my Ford performance catch can. I have 2020HPP with 22psi of boost. I have cleaned up the strut tower and then I re-torqued the screws holding the can together to the number on the installation instructions. All of the screws moved and a couple were not tight at all. I have already contacted them (FPP) about one of the o-rings breaking just installing the unit. I will see if the leak re-occurs after tightening the screws. It does appear that the plastic has issue with deformation. I will post images shortly. While I really like the look and function of the FPP catch can, if it does not hold up I will be going elsewhere.

 

[BluHPP]

Here are my images. Torqued to 4.5 Nm after photos taken. Torquing did not seem to make much of a difference in the gasket gap though.

 

[14819]

If I ever decide to try an alt route

I will try and make a couple new bolt holes. One where it deforms open on each side, drill small hole and use bolt and nut. I don’t see why it wouldn’t help seal those separating spots
Got a couple ideas myself

 

[14819]

Edit after looking at photos may not be able to sink another bolt down into it. Dunno. But I could always try figure something out. Maybe figure out a clamp or something to apply pressure on side

 

[14819]

My new one hasn’t had an issue. To be continued

- someone posted how they used a new gasket maker. I would probably do that route

I will make it work lol

 

[dgc333]

people say its good for any ecoboost, but unless your pushing higher / more boost than stock I dont know if it would benefit or not.

FWIW, a catch can is only functional off boost when there is vacuum in the intake manifold that can draw the fumes in the crank case through the catch can. The UPR dual valve catch can has the ability to use the low pressure area right in front of the turbo to allow for the fumes to be pulled through the can even under boost.





Dave

 

[BluHPP]

From a purely physics point of view, any time the crankcase pressure is higher than the intake pressure, there will be flow through the catch can. So depending on the amount of piston ring blow by and the amount of boost there can be flow. Part of the crankcase breather is a valve to allow flow out under higher pressure conditions. Just like the PCV valves of old. (Positive crankcase ventilation). At some point for my HPP car, the pressure in the crankcase exceeded atmospheric pressure because that is how the oil ended up on my strut tower and engine cover. The oil vapor had enough pressure to overcome the gasket sealing pressure. Unless my 6,000 miles since new turbo has a really bad seal, the oil in my engine compartment came from above atmospheric pressure in my crankcase through the catch can. I have drained the oil twice from my catch can in 5K miles and only have about 1/4 cup. The driving covered a trip from CA to Mt and 5 autocrosses.

 

[Park]

I would say that’s enough evidence that a catch can is worth it ?

 

[dgc333]

From a purely physics point of view, any time the crankcase pressure is higher than the intake pressure, there will be flow through the catch can. So depending on the amount of piston ring blow by and the amount of boost there can be flow. Part of the crankcase breather is a valve to allow flow out under higher pressure conditions. Just like the PCV valves of old. (Positive crankcase ventilation).

The Ecoboost engine has a PCV valve, it is on the side of the block and is where you connect the catch can. It serves two purposes; 1) when the engine is off boost and the intake manifold is under vacuum it acts as a throttle to limit the flow from the crankcase to the intake manifold. This is the same function PCV valves have always performed. 2) when the intake manifold is under boost it acts as a check valve to prevent the boost pressure from trying to pressurize the crank case.

Also part of the PCV system is what is referred to as the clean side. On the Ecoboost engine it is a hose that connects to the rocker cover at the back passenger side and runs down to the intake tube a few inches in front of the turbo. This hose allows clean filtered air back into the crankcase when the intake is under vacuum and is drawing fumes from the crankcase through the PCV valve. This keeps the crankcase pressure close to atmospheric pressure. When the engine is under boost and the PCV valve is closed, any pressure that builds do to blow by is allowed to travel down this hose and be released into the intake tube where it travels through the turbo and back into the engine. In a healthy engine the crankcase pressure will still stay close to atmospheric pressure. The PCV system is a closed system so oily fumes will not be released into the atmosphere.

If you are getting oil on the outside of the engine I would say you have an issue with the engine that needs to be looked at.


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[BluHPP]

The oil on the outside of the engine cover and on the strut tower is from the catch can leaking oil vapor past the gasket. We will see if the tightening of the catch can screws will stop the leakage. The engine cover oil is in the exact same place as Freedom Penguin's in post #1. At some point the pressure inside the catch can must be higher than atmospheric or we would not see the oil outside the catch can. Also is there a check valve in the clean side tube?

 

[gatornek]

The oil on the outside of the engine cover and on the strut tower is from the catch can leaking oil vapor past the gasket. We will see if the tightening of the catch can screws will stop the leakage. The engine cover oil is in the exact same place as Freedom Penguin's in post #1. At some point the pressure inside the catch can must be higher than atmospheric or we would not see the oil outside the catch can. Also is there a check valve in the clean side tube?

There is no check valve on the clean side. The check valve is on the "dirty side" only, and its literally ON the PCV plate and allows outgoing ventilation only. Which means that the can becomes pressurized up to peak boost levels, whenever you WOT it. This is essentially what is causing the misting from the can.

 

[14819]

So how do we fix the misting from the can? How to prevent it? I’d prefer not have to get a different can.

can it cause ecoboom?

 

[gatornek]

So how do we fix the misting from the can?

You were already onto one solution with adding some gasketing material to the lip. I've also thought about adding a check valve between the can and the throttle body. But the misting isn't that bad for me, so I haven't really taken action.

can it cause ecoboom?

IMO, no. All this is having some residue oil trapped in the can that splashes everywhere each time the can pressurizes.

 

[14819]

How does one add a check valve exactly? Any downfalls to one? Those hard pipes i don’t want to mess up lol

 

[gatornek]

How does one add a check valve exactly? Any downfalls to one? Those hard pipes i don’t want to mess up lol

Yep. You'd have to cut the tubing and add this.
UPR Billet Check Valve 0-100psi Operating Pressure

Clamp it down with some small diameter hose clamps.
Performance Tool 26-Piece Hose Clamp Kits W5348

 

[14819]

if you or anyone ever does that post pics and such so I have a good idea of how and if it’s worth it

 

[StuckXJ]

The oil on the outside of the engine cover and on the strut tower is from the catch can leaking oil vapor past the gasket. We will see if the tightening of the catch can screws will stop the leakage. The engine cover oil is in the exact same place as Freedom Penguin's in post #1. At some point the pressure inside the catch can must be higher than atmospheric or we would not see the oil outside the catch can. Also is there a check valve in the clean side tube?

I ran into the same issue with oil everywhere. I fixed it with the rtv in post #10 in this thread. But before I did that, I sanded the top and bottom covers against a piece of glass to get both surfaces as flat as possible.

That's the check valve, its in the top right of that plate. You can put one in one of the lines as someone mentioned above.

 

[14819]

But isn’t the Pcv a check valve or ? Any issues installing another one?

 

[StuckXJ]

But isn’t the Pcv a check valve or ? Any issues installing another one?

In the stock baffle plate, the check valve is in the same location. There is a good pic of it here:

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Gatornek shared that in another post.

 

[dgc333]

That's the check valve, its in the top right of that plate. You can put one in one of the lines as someone mentioned above.

View attachment 37192

But that check valve is not going to prevent the catch can from being pressurized. You would need to install one in the line between the catch can and intake manifold.


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