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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > NA Engine (non-turbo) / Drivetrain / Exhaust Modifications > N52 PCV Venting to atmosphere



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      03-25-2020, 02:20 PM   #1
E92William
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Before I even tackle the 3 stage manifold I was worried to an extent about the longevity of all these shitty plastic hoses aswell as the pcv heater melting.
Searched a bit around and couldn't find an N52 venting the PCV system to the atmosphere and blocking off the manifold ports.
For one I wouldn't like to get my manifold full of oil after thoroughly cleaning it. I've read disas don't like oil either. I think it's a rather useless system save for emissions requirements which we don't have in Florida.

I'd like to see some of you guys setups for catch cans aswell if this isn't a thing that's been done.
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      03-25-2020, 02:54 PM   #2
BudVlad
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Because I have N53 (DI) I had to eliminate crank ventilation to intake manifold to reduce intake valves carbon build up.
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      03-26-2020, 07:15 AM   #3
E92William
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Quote:
Originally Posted by BudVlad View Post
Because I have N53 (DI) I had to eliminate crank ventilation to intake manifold to reduce intake valves carbon build up.
That's a great looking setup!
I suppose there are no issues with this being vented and not sucked in by the intake manifold? Given that there's still a pcv valve inside the engine valve cover.
Do you have a DIY on it? I know it's an N54 manifold but I'd like to know the components and hoses etc.
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      03-26-2020, 11:48 AM   #4
nsjames
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just install a catch can between the pcv and manifold if you're concerned about the oil. 3/4 hose fits the quick connects just fine.

I would not want to smell my crankcase all day in my HVAC system.
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      03-26-2020, 03:56 PM   #5
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Quote:
Originally Posted by E92William View Post
That's a great looking setup!
I suppose there are no issues with this being vented and not sucked in by the intake manifold? Given that there's still a pcv valve inside the engine valve cover.
Do you have a DIY on it? I know it's an N54 manifold but I'd like to know the components and hoses etc.
I got the catch can, filter and hoses from ebay. I didnít want to connect the catch can outlet back to inlet because itís N53. I guess on N52 itís OK. However, I donít smell anything, filter gets rid off the crankcase smell.
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