Service port on head for crank case vent

[doublespaces]

I've been trying to find a 'pretty' way to vent the crank case from the front since I have a single turbo and the intake pipe is up there. I know several people have used the chain guide service port but have experienced excess oil being drawn out. I know the VTT valve cover has a port for it on top but I figure I'd like to see the hose come off the side of the engine instead as it would be a bit more stealth.

Here is the area in question:



I know people have suggested to use a 90* fitting pointed up, but this wouldn't accommodate the stealth factor. I have thought about having a splash shield and even went as far as buying some air 'mufflers' off mcmaster however they are simply too large for the space given. I'm convinced that a splash shield of some kind would be necessary in order to maintain a decent level of air flow, as opposed to a restrictive stone filter for example.

I did find this on ebay:

It is meant to be used on on the flat spot of a valve cover, but perhaps if the bottom was shaped more like the head trough in the above photos, then maybe something like this would work. If you had an AN fitting with LONG M18 1.5 threds, you could screw into it and the shape of the bottom would keep it in place due to the rounded shape.

More ideas:

Anyone else have ideas, thoughts? I'm still unsure where the oil is coming from exactly (from the cam spin, drip down from the valve cover, etc). Looking at the oil stains, it appears to be cleaner where the oil runs down from the VC.

 

[fmorelli]

@martymil

 

[martymil]

Get yourself a banjo fitting, weld on a dash 10 orb adaptor to it and screw in the VTT Billet Vacuum Relief Valve

 

[doublespaces]

I'm trying to vent to the intake pipe without a 90* pointing upward.

 

[The Convert]

Get yourself a banjo fitting, weld on a dash 10 orb adaptor to it and screw in the VTT Billet Vacuum Relief Valve

View attachment 35181

Marty, is it just the photo, but it looks like there’s oil on the outside of the black sections? Am I seeing things?

 

[martymil]

nah no oil it just the photo.

You could turn it side ways and have it run parallel with the bottom of the rocker cover and it would be hidden under the oil hoses.

 

[doublespaces]

As an update, I bought 10 fittings as an experiment and have sold the other 9 to people wanting to test this with me.

My theory: The oil is being slung up onto the vc from the cams and it runs down the side of the VC right into this hole:

You can see that area appears washed clean from oil. The custom fittings actually protrude two inches into the hole so the oil will get caught on the threads and drip down instead of going into the hole.

Here is the drawing for anyone who wants to copy it. I sent a request out to several random companies online and this one from England of all places was the smoothest to deal with so I proceeded to use them despite the distance. My contact was Andy AT customfittings.com and the description is:
1 – 7/8”-14 JIC x M18 x 1.5(Flat Faced)WITH A 2”LENGTH OF THREAD MALE/MALE
HEX ADAPTOR AND THE METRIC END WITH A 7/16”BORE


Keep in mind, I had a larger than normal drill used for the M18 side, I choose 7/16 but after receiving it I can tell there is enough margin to do a 31/64" straight through.

The shoulder is also round just like the head, it is a perfect fit:

I'll hopefully get a chance to test it in the coming weeks.

 

[Chris@VargasTurboTech]

So what are you guys looking for here? That fitting looks less than ideal internally. Not sure why everyone wants to vent there, its not the ideal spot you always want to go as high as you can to get away from liquid but if people want something that is worse than on the market, we can make it easily. We do have custom fittings made all day.

 

[doublespaces]

Before anymore are made we should see what the others say on how effective it is. Once proven as something that works, it would be a cheap shortcut for somebody that has relocated inlets for one reason or another. One change I'd make is a 31/64th drill all the way through, whatever the normal 10an inside diameter is supposed to be.

 

[Panzerfaust]

So what are you guys looking for here? That fitting looks less than ideal internally. Not sure why everyone wants to vent there, its not the ideal spot you always want to go as high as you can to get away from liquid but if people want something that is worse than on the market, we can make it easily. We do have custom fittings made all day.

I don't think Tyler or anyone else venting from there is saying it's a superior solution to the VTT VC ports, but it is another spot to vent from and allows more flexibility for users still on the stock VC too. I have one of your aluminum VC waiting to go on, but I may still use this port just for extra ventilation - the less chance for CC pressure the better. Honestly I think you guys could definitely capitalize on making a fitting for this port, but that's just me.

I bought one of the fittings from him because I've been using the access port with a check valve to vent and maintain PCV for a little over a year, but there most certainly is oil getting into that line from the looks of it. Not a *ton* - probably due to it not being my only vent - but enough that it did start to seep on the hose a bit in colder weather and that's enough to drive me nuts.

 

[JimboFresh206]

M18x10an banjo seems like it would do nice, and they are super common.

First hit on Amazon..

Amazon.com

It works on other m5x engines, don't see why it would hurt ours. I had planned on doing this, but the 2 ports on my cover worked so it's like.. why

 

[doublespaces]

M18x10an banjo seems like it would do nice, and they are super common.

First hit on Amazon..

Amazon.com

It works on other m5x engines, don't see why it would hurt ours. I had planned on doing this, but the 2 ports on my cover worked so it's like.. why

There are many M18 fittings, but they don't stop the oil from shooting out of that hole filling your catch can in a matter of days in some cases.

 

[JohnDaviz]

Why are you not drilling the hole in a slight angle so that oil will flow back into the cylinder head?

 

[doublespaces]

Why are you not drilling the hole in a slight angle so that oil will flow back into the cylinder head?

Which hole? I only control the fitting itself the hole on the head is there from the factory

Also keep in mind that crank case fumes are coming out of here at a fairly good pace, it can suck oil vertically so an angle wouldn't really matter.

 

[Torgus]

Get yourself a banjo fitting, weld on a dash 10 orb adaptor to it and screw in the VTT Billet Vacuum Relief Valve

View attachment 35181

I knew that vac relief looked very familiar:

Amazon.com: Moroso 22637 3/4-16" Vacuum Relief Valve : Automotive

Buy Moroso 22637 3/4-16" Vacuum Relief Valve: Vacuum Valves - Amazon.com ✓ FREE DELIVERY possible on eligible purchases

www.amazon.com

Available in NPT and 3/4"-16 thread etc.

I like the port in the head for this. Pressure is pressure. Doesn't get in the way of stuff. No need for an aftermarket valve cover which is what 99% people have. Semi inexpensive.

Someone like @Omar@VaderSolutions should make this with the banjo fitting etc. I'd buy it.

 

[Asbjorn]

Asked in another thread without luck, so I will try to sneak in my question here. Could the vacuum relief valve be T-ed onto a hose between the OE valve cover and the flapper valve? Ie inserted between where the flapper valve is normally mounted on the VC.

 

[doublespaces]

Asked in another thread without luck, so I will try to sneak in my question here. Could the vacuum relief valve be T-ed onto a hose between the OE valve cover and the flapper valve? Ie inserted between where the flapper valve is normally mounted on the VC.

So keep the flapper valve? The relief acts as the metered valve so you would just use a normal check valve rather than the OEM flapper valve. But if you did use a check valve then yes that would work.

 

[Jake@MHD]

How's your custom fitting been working out?

 

[doublespaces]

How's your custom fitting been working out?

It's sitting fantastically with my car, makes those jack stands shine.

 

[fmorelli]

It's sitting fantastically with my car, makes those jack stands shine.

I see the same guy working on my car is working on yours.

Filippo