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View Full Version : SR20 S15 Oil Catch/Seperator

ShawnHalu
10-17-2016, 12:26 AM
Hi Guys

I know there are alot of thread talking about this but i cant get a real setup or layout for S15 SR20DET, majority i have read is about S13/S14 CA/SR20, can someone enlight me with photo or tell me which hole to block for the valve cover as S15 valve cover have 3 hole. and to retain the PCV near the intake side anot? Lastly what is the size of the hole coz i would want to buy the EARLS adpater :) and fit with this http://www.42draftdesigns.com/stealth-oil-catch-can/ <- is it usable?

Thanks alot
Tom N
10-17-2016, 06:47 PM
S14 and S15 SR are the same block and head.
Passenger side port is pcv.
Driver side front goes to turbo inlet pipe.
Driver side rear goes down to the block.
ShawnHalu
10-17-2016, 08:11 PM
S14 and S15 SR are the same block and head.
Passenger side port is pcv.
Driver side front goes to turbo inlet pipe.
Driver side rear goes down to the block.

U referring to a LHD right? mine is a RHD, so everything u stated is opposite right.

Can i divert all 3 pipe to a catch can then catch can back to pcv? my pre turbo inlet doesnt have a bung for me to hook on.
jr_ss
10-17-2016, 09:58 PM
U referring to a LHD right? mine is a RHD, so everything u stated is opposite right.

Can i divert all 3 pipe to a catch can then catch can back to pcv? my pre turbo inlet doesnt have a bung for me to hook on.

Everything should be in the same exactl location minus pedals, dash, and brake/clutch components...
ShawnHalu
10-18-2016, 02:07 AM
ya it is but he is using lhd to refer i guess.
Tom N
10-18-2016, 07:22 AM
Yes if you have a RHD car then switch where is drivers side to passenger side and vice versa.

You should keep the pcv going into the intake. You want that suction at idle. You can put a catch can in line of that hose though to catch oil.
ShawnHalu
10-18-2016, 10:40 PM
ok. the pcv is plug directly to the cover, so u mean after the pcv add a catch can then to the intake manifold right?
TheRealSy90
10-19-2016, 10:09 AM
If you wanted to. IMO a catch can on the PCV side isn't really necessary since it's closed under boost conditions.
ShawnHalu
10-19-2016, 08:39 PM
Ok roger that. So my setup would be

1. (PCV side remain connected to Intake manifold)
2. (turbo side rear remain connected from valve cover to block)
3. (turbo side front connect to catch can then vent to atmo)

is this right?