PCV to AN Adaptor

[galaxy]

So I was looking into these AN valve cover adaptors that fit in the PVC port for a little project, but it seems this adaptor eliminates the the actual PVC shuttle valve. You’d have just a straight through adaptor. I’m guessing that’s not a good thing?? With all the threads and conversation (coincidently) floating around about PVC and oil consumption being related, trying to get a learn on all of it. I’d like to learn what the downside, if any, or the effects of running this adaptor with no valve in it would be.

https://www.uprproducts.com/upr-plu...over-fitting-to-an-mustang-f150-sho-explorer/


https://www.fathouseperformance.com/product/coyote-mustang-10an-valve-cover-fittings/

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[Blackedoutdreams]

Some people run a catch can/breather tank vented to atmosphere with no pcv in a FI setup. All of my boosted vehicles have had no pcv and a vented can.

 

[galaxy]

This is stock, N/A.

 

[NightmareMoon]

Yeah cool little adapter, and you can always add a check valve later in the line..

But like, I’m not sure why you want an AN line there, catch cans are not hard to find. No need to overcomplicate things, at best you’re just adding weight.

 

[Blackedoutdreams]

Personally I would get one of the non vented cans and call it a day. From what I was told was cars that don't come factory boosted have a different style pcv valve in the drivers side VC. This doesn't it allow the engine to vent the excess crankcase pressure from the added boost. Hopefully that answers your question.

 

[JAJ]

So I was looking into these AN valve cover adaptors that fit in the PVC port for a little project, but it seems this adaptor eliminates the the actual PVC shuttle valve. You’d have just a straight through adaptor. I’m guessing that’s not a good thing?? With all the threads and conversation (coincidently) floating around about PVC and oil consumption being related, trying to get a learn on all of it. I’d like to learn what the downside, if any, or the effects of running this adaptor with no valve in it would be.

https://www.uprproducts.com/upr-plu...over-fitting-to-an-mustang-f150-sho-explorer/


https://www.fathouseperformance.com/product/coyote-mustang-10an-valve-cover-fittings/

Can't you just install one of these dudes and call it a day?

https://performanceparts.ford.com/part/M-6766-A52

And, yes, you can't use one of those AN adapters without a check-valve/flow limiter type PCV valve or you'll have uncontrolled airflow through the crankcase into the intake behind the throttle plate. Lots of air, lots of oil, a real mess in the intake and it won't run worth a darn.

 

[K4fxd]

And, yes, you can't use one of those AN adapters without a check-valve/flow limiter type PCV valve or you'll have uncontrolled airflow through the crankcase into the intake behind the throttle plate. Lots of air, lots of oil, a real mess in the intake and it won't run worth a darn.

Most who use this would not use the manifold vacuum connection. It would be vented to atmosphere or tied into the exhaust collector.

 

[galaxy]

And, yes, you can't use one of those AN adapters without a check-valve/flow limiter type PCV valve or you'll have uncontrolled airflow through the crankcase into the intake behind the throttle plate. Lots of air, lots of oil, a real mess in the intake and it won't run worth a darn.

This is the answer to my question.

Yeah cool little adapter, and you can always add a check valve later in the line..

But like, I’m not sure why you want an AN line there, catch cans are not hard to find. No need to overcomplicate things, at best you’re just adding weight.

Because I love AN fittings and hose like a fat kid loves Oreo's, that's why! LOL ;) Whenever I'm doing any project, if I can install AN stuff, I'm gonna. It's what I enjoy, it's just what I do.

Can't you just install one of these dudes and call it a day?

https://performanceparts.ford.com/part/M-6766-A52

Those are cool. I have a can, I'm just looking at the hose options for a custom, AN install.

Personally I would get one of the non vented cans and call it a day. From what I was told was cars that don't come factory boosted have a different style pcv valve in the drivers side VC. This doesn't it allow the engine to vent the excess crankcase pressure from the added boost. Hopefully that answers your question.

I am running a non vented, traditional can in the PCV system. This thread was solely about making my personal choice of AN fittings work to run custom hose the way I want. Our engine does not have a PCV in the left side valve cover.

 

[Magony15]

You're correct that it looks good and it's correct that it's overkill. The plastic seat that the adapter twists into i

s not very sturdy. I just hand tighten it and it seals fine. I'm FI and E85 so I get condensation in the can but no oil yet. I'm sure you could still use a PCV or check valve with it.

 

[galaxy]

@Magony15 So you’re vent to atmosphere then, which makes sense. In my mind, I don’t see how you would ever get oil in a vent to atmosphere catch can. There’s no vacuum through it. You’d only ever have whatever crankcase pressure maybe pushing some out. Or am I looking at that wrong?

 

[Magony15]

There's been concern about boosted setups causing piston ringland breakage I guess. Just theory probably. Forced induction should be able to push oil vapor I would think. It smells like E85 anyway.

 

[Blackedoutdreams]

Those are cool. I have a can, I'm just looking at the hose options for a custom, AN install.



I am running a non vented, traditional can in the PCV system. This thread was solely about making my personal choice of AN fittings work to run custom hose the way I want. Our engine does not have a PCV in the left side valve cover.
[/QUOTE]

I must've misread the post. My catch can setup in the picture.
The only oil you get is whatever settled out the vapor.

 

[JAJ]

@Magony15 So you’re vent to atmosphere then, which makes sense. In my mind, I don’t see how you would ever get oil in a vent to atmosphere catch can. There’s no vacuum through it. You’d only ever have whatever crankcase pressure maybe pushing some out. Or am I looking at that wrong?

The driver's side FP catch can for the GT350 is a vent-to-air device and there are reports of it getting oil in it, so it does happen. It is connected to the intake tract after the MAF and before the throttle, and it has no valves or any other controls - it's just a piece of pipe with a can in the middle that ducts fresh air into the crankcase most of the time, and crankcase gas out of the crankcase into the intake in moments of stress.

 

[galaxy]

@JAJ Yup, that's exactly what I was envisioning. I summize then if you convert both sides to a vent to atmosphere system (assume with no PCV) then that's all you have for total system?!

You wouldn't want this on a N/A setup right? Always thought I was taught some vacuum in the crankcase could be a good thing. But I get why boosted guys would not want that intake positive pressure going backwards into the crankcase.

 

[K4fxd]

Always thought I was taught some vacuum in the crankcase could be a good thing.

It is but PCV only has vacuum under light throttle. WOT when vacuum does the most good, PCV has none.

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