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Old 05-05-2020, 08:35 AM
nicks67ca nicks67ca is offline
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Default LSA PCV Options / Routing

I've seen a few threads on PCV systems and was looking for some input into my system. I have a LSA and i'm questioning how I have it set up.

Current set up cheap catch can (vented to atmosphere) with mesh inside.
-Both valve cover banks are connected to it. (it has 2 ports)
-The valley cover pulls fresh air from the intake filter
- The snout port is blocked off
I've driven this set up for 300 or so miles and have no issues other than a gas blow by smell after stepping on it. I drained it yesterday and it is collecting oil.

I've seen 2 ways to route a catch can based on the CTS-V and ZL1 forums

Option 1
-Closed catch can (elite engineering style)
-Plumbed in the loop from the valley cover to the supercharger snout
-Stock valve cover lines run to the intake tube after MAF

Option 2
Mighty Mouse catch can (vented)
-Oil fill cap adapter to catch can inlet
-Catch can outlet run supercharger snout
-Valley cover to intake (after MAF)

I have a provent 100 I purchased thinking I was going to use that but went with a mesh / vented one.

Can/Should i switch to the provent? I don't want to use the drain back function since i'd need to find a way to do that.I really just want limited blow by gas smell and way to collect oil vapor and keep crankcase ventilation down.

Thanks Nick
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