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      04-12-2011, 05:17 PM   #68
EastBayE90
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Quote:
Originally Posted by vasillalov View Post
Those can be had brand new for under $100 if you search deep enough. What we need to do first before we test it is obtain the manufacturer spec sheet and figure out if these will be too much of a restriction. Perhaps this particular model may not work well for us, but there are dozens of other models that might work fine for N54/N55 applications.

I do know for a fact that a lot of VW/AUDI guys are using the Provent 200 oil separators in their cars with great succcess. It requires some ingenious rigging but it works.


EDIT:
So I found more information on those units:

* Includes filter element
* Up to 200 l/min blow-by gas (I think this EASILY outflows the N54 PCV system)
* Integrated pressure regulation for crankcase (This is to eliminate back pressure. We will need to experiment with this setting)
* Tool-free element replacement with protection against incorect insertion
* Suitable for use with open or closed CCV system

Here is the full PDF:
http://republicsales.com/documents/M...ovent%20en.pdf
Just finished the PDF and yes a very interesting read. You are right the Integrated pressure regulator seems to be the only variable that we need to figure out. Because in diesel engines the crankcase pressure can be extreme in some cases hence the need for the regulator to keep the pressure in check. Just doing a search on ALLDATA it talks about how BMW uses a crankcase pressure regulator already so we would have no need for a additional one if BMW already has the pressure set. Maybe we can remove it and plug it. Just bypass the regulator all together? Or gut the regulator.

As for the change interval for the filter element, I did some quick research and it looks like diesel guys change it every 15-30,000 miles which would be ok with me if the filter is only $50.00. Plus they are probably pushing much more l/min of blow by volume than our small N54. So who knows maybe we would only be changing the filter every 50,000 miles. And if the VW/Audi guys are already doing it then that shows it will work. We need to send over some spy's to find out their results. muhahah
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