Oil catch can 3.7L

Discussion in 'How To' started by RenKJ, Mar 21, 2016.

  1. RenKJ

    RenKJ Full Access Member

    Messages:
    303
    Likes Received:
    1
    Joined:
    Feb 19, 2015
    Location:
    Canada
    Here's what the a catch can looks like and where i put it, as requested a good while back.

    Anyways putting this up because im about to test a different design and will post results and comparison over the next year.


    [​IMG]

    Cheap aluminum billet
    https://www.amazon.ca/dp/B00K80GNV2/ref=cm_sw_r_other_awd_mN08wb9Z9ERNR

    Empty monthly through winter, catches a good bit of condensation in cold climate/winter

    Empty every month or two over summer, no condensation during summer typically.

    Will follow up with results on the next design down the road.

    http://s.aliexpress.com/BVN3eqmM
     
    Last edited: Mar 23, 2016
  2. JeepJeepster

    JeepJeepster Full Access Member

    Messages:
    8,401
    Likes Received:
    4
    Joined:
    Dec 15, 2004
    Location:
    Dem hollers in Ky
    Im needing to do this but dont want to spend the money on the catch can I WANT. Which can did you go with?

    My intake is coated in oil...

    [​IMG]

    [​IMG]
     
  3. RenKJ

    RenKJ Full Access Member

    Messages:
    303
    Likes Received:
    1
    Joined:
    Feb 19, 2015
    Location:
    Canada
    Ive posted a link, however i recommend you hold off till you see the new one im gona try, its about 10bucks more off AliExpress but uses two Chambers and two condensers.

    Once you choose a catch can to go with id recommend a seafoaming and spark plug change before you install it in line with the pcv.
     
  4. rjkj2005

    rjkj2005 Full Access Member

    Messages:
    380
    Likes Received:
    0
    Joined:
    Feb 25, 2016
    Location:
    US
    I understand a catch can on the 2.8 diesel. Like most diesels they have alot of blow. If your 3.7 has enough blow by to make you want to put a catch can on. You've got bigger problems.

    Sent from my SM-G900V using Tapatalk
     
  5. RenKJ

    RenKJ Full Access Member

    Messages:
    303
    Likes Received:
    1
    Joined:
    Feb 19, 2015
    Location:
    Canada
    How much blow by makes someone want a catch is pretty subjective[emoji14]
     
  6. renegade 04

    renegade 04 Full Access Member

    Messages:
    1,432
    Likes Received:
    1
    Joined:
    Jan 3, 2014
    Location:
    Albany New York
    If you were putting the catch can on there to stop the build up of the milky white stuff in the filler neck, the fix for that is to just remove the inner baffle from the filler neck!
     
  7. RenKJ

    RenKJ Full Access Member

    Messages:
    303
    Likes Received:
    1
    Joined:
    Feb 19, 2015
    Location:
    Canada
    It catches a little bit of oil vapour and pulls out condensation in the winter, thats about it.

    Only ever saw that milky issue when i first got the vehicle, never had it since replacing pcv valve, I just prefer to reduce oil vapour going into the intake manifold.
     
  8. Ken Finan

    Ken Finan New Member

    Messages:
    1
    Likes Received:
    0
    Joined:
    Dec 27, 2018
    Location:
    GA
    Oil catch can placement in a 2002 KJ

    Here is an alternate placement for an oil catch can in a Jeep Liberty....mine is a 2002. I made the bracket myself ( would have been cleaner if I had experience welding ). The catch can is a "knock off" of a Mishimoto compact baffled catch can, but it is a branded knock off from KKmoon which I believe to be a sister company, but the can is $30 compared to the $100+ . But you will have to get your own hoses. I also placed it here because I use the factory hose connections from the PCV to intake. Hope this helps someone thinking about a oil catch can.
     

    Attached Files:

  9. wheeee32

    wheeee32 Full Access Member

    Messages:
    1,334
    Likes Received:
    1
    Joined:
    Feb 27, 2009
    Location:
    SOMD(wish it was still the mountains)
    I like the idea of this but is it truly needed?
     
  10. jeeplib05

    jeeplib05 Full Access Member

    Messages:
    851
    Likes Received:
    9
    Joined:
    Jan 7, 2016
    Location:
    Ohio
    Highly doubt it. I put one on my ‘12 Challenger RT but only because the 5.7 has a big issue with sending a lot of oil into the intake- where some have been FULL of oil
    Didn’t want to take a chance so I put one on from SpeedLogix and it works great. Empty every oil change and clean it and it’s good to go again
    But like I said before, I doubt you need one for a 3.7 considering people have gone 300k+ miles without one
     
  11. CorDog009

    CorDog009 New Member

    Messages:
    11
    Likes Received:
    0
    Joined:
    May 25, 2015
    Location:
    Texarkana Texas
    On my LS1 cars I went to Home Depot and got a smal air/oil separator for an air compressor. A couple of barbed hose ends and some rubber hose and it was good to go, and cost virtually nothing. I’ve had the expensive ones on other vehicles, but the DIY setup worked better and the bowl was clear to see how much oil had collected.
     
  12. ltd02

    ltd02 Well-Known Member KJ Supporting Member

    Messages:
    2,416
    Likes Received:
    42
    Joined:
    Aug 15, 2014
    Location:
    North Central Maryland
    I like it! Might have to check that out when at the HD next time. :happy160:
     
  13. tommudd

    tommudd Moderator Staff Member Moderator

    Messages:
    16,991
    Likes Received:
    109
    Joined:
    Jul 14, 2005
    Location:
    Southeastern Ohio
    No
     
  14. Aceofspades

    Aceofspades Full Access Member

    Messages:
    531
    Likes Received:
    10
    Joined:
    Jan 24, 2017
    Location:
    Buffalo
  15. KJownerX2

    KJownerX2 New Member

    Messages:
    13
    Likes Received:
    0
    Joined:
    Jan 18, 2018
    Location:
    TX
    Interested to see what the outcome was on this. Sorry just seen the post from a while back.