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Catch Can VS. Air Oil Separator w/ PD blower

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Old 09-21-2020, 04:36 PM
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Default Catch Can VS. Air Oil Separator w/ PD blower

Ok guys,
What's the stand point on best option with a PD blower(LSA / ZL1). I'm hearing both sides of the argument and some of it sounds like personal preference. Debating between the Moroso air oil separator or the MM "wild" catch can. What are you running on yours? Pro's/cons? Lessons learned?

370LS w/ ZL1 blower and 12-14psi boost.
Old 09-21-2020, 06:42 PM
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I ran a MM can on my blower setup and still run it on my turbo setup. Works good.
Old 09-22-2020, 08:52 AM
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I only have experience with the MM catch can, works good.
Old 09-24-2020, 05:56 PM
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Originally Posted by 03sierraslt
I ran a MM can on my blower setup and still run it on my turbo setup. Works good.
Did you have it plumbed like they say with the valve covers, or just off the valley plate and the supercharger inlet? I'm getting a LOT of conflicting info and really don't want to wash the blower down with oil during break in.
Old 09-24-2020, 06:00 PM
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-10 from each valve cover to a vented Moroso can, nothing going in the intake track.

If you wanted to retain some PCV for smell... this would work...

I had planned to do this if the totally vented setup smelled too bad. I still may as I have a bit of blow by smell after a hard run and a little steam coming thru the grill from the can.
Old 09-25-2020, 12:54 PM
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They have it setup like this for an LSA setup. Wonder if I can take the driver side valve cover line to the throttle body port instead of putting a fitting out on the intake tube. It's still "pre boost" right?

https://docs.google.com/document/d/1...JTcepoubI/edit

Old 09-25-2020, 09:19 PM
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If installing per the MM instructions (can between pass valve cover or valley and blower vac port) connecting the driver valve cover to tb port will not provide a 'fresh air inlet' as it will always have vacuum (same as anywhere between the tb and rotor inlet). You could put the can in between the ds valve cover port and tb then vent the valley port or connect to air intake in front of the tb.
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