4stroke ROV/ulmer intake

[subaru2006]

Anyone have both and have a solution for the RoV and crank vent line? I think I have mine solved just wondering if anyone has a better option.

Thanks
Subaru2006

 

[Mtnviper]

Jason,
Do you have a pic of your set up?

A couple tips when using the ROV with non-stock intakes.
You'll want to route the small breather tube from the valve cover to your filter and "down stream" or after the ROV valve. This is similar to how the system works with a stock air box. When plumbed in this manor, it allows there to be a pressure differential between the crankcase and oil tank during the oil pump Quick Prime mode. The pressure differential between the oil tank and crankcase is what pressure feeds the oil to the oil line suction port and quickly prime the oil pump.

If you are relocating your breather filter to a different location. It's best to mount it in a fairly well protected area. The main thing is to prevent melting snow from dripping water on to the filter, which could cause it to become water logged and then freeze if the sled sits outside overnight.

Bill

 

[subaru2006]

Prior to I was able to using your directions and route it into the stock intake box. But with ulmers setup he placed his filter on top of the seperator. Doing this with his setup and yours the hood will smash down on it. So what I did is put a hose on top of the rov and routed it back towards the exhaust near the fuel filter. Connected his filter setup and routed the crank vent line in a loop and into the filter. I'm not sure if that makes any sense to you but it does for me lol. I'm at work currently and will get pictures tomorrow. I did have to cut the crank vent line back some. Not sure on how much since I did a little at a time.

Routing it towards the front I ran into the filter or lines rubbing on something and couldn't get it to sit nicely. Not saying it wouldn't work I just didn't like it.

With the setup I have now nothing rubs or touches anything. The filter is horizontal and sits away from the exhaust enough I think. Not sure how much heat will mess with that minus the obvious of melting something but as I said it should be far enough away. This also allows me to keep the rov in the position you say.


Subaru2006

 

[subaru2006]

Here is another question. Can both of these lines be filtered straight to the atmosphere or do they need to be in a system. Like seperator-rov-filter-crankvent line-valve cover? Or can I go seperator-rov-filter and then valve-crank vent line seperate filter?
Does that make sense?
Subaru2006

 

[Mtnviper]

From a positive crankcase ventilation (PCV) stand point, it's best if you can tie the two vents together and have the crankcase breather gases circulate back through to the air intake for combustion. Also there is a small amount of oil mist that may escape out the breather while the engine is running and a closed loop system would recover that as well.
However with pod filters a closed loop PCV system would difficult fabricate!

To answer your question , yes both the crank (valve cover) and oil tank may be vented to the atmosphere separately if desired. So you can run a filter for each vent separately and have them in different locations.
Breather air flow rate out of the air/oil separator increases dramatically with RPM and engine load. When using a filter on the oil/air separator vent, you'll want to make sure that it is fairly large and free flowing and most larger automotive crankcase filters will usually flow enough air.
Bill

 

[subaru2006]

Thank you. That is exactly what I was thinking. I will post pictures tomorrow of my setup.

Subaru2006

 

[subaru2006]

Here is what I did. I don't have the clamps on it yet since it was just mocked up to make sure nothing would hit when the hood was on and ran out of time on Monday. I did put a zip tie on to hold it the farthest from the exhaust. But here are the pictures. I will finish it up today when i get around to it. I think this setup will work just fine. The pictures for the crank vent line is kinda hard to get at, so that's what i got lol. The vent line makes a loop towards the front and then back to the brass 90*.




Subaru2006

 

[Mtnviper]

Looks good!

Bill