PCV oil separators, diy and other:

Discussion in 'Fiesta ST Engine Upgrades' started by wash, Sep 28, 2013.

  1. wash

    wash Active Member

    We all want to keep oil out of our intakes and intercoolers but the increased blow by of a forced induction engine and the fact that there is nothing to clean the intake valves on a direct injection engine makes it critical to keep the PCV gasses entering the intake oil free.

    For the Ford GT, Mustang GT500, 3.5 Ecoboost and 2.0 Ecoboost there are oil separator kits that work and some that aren't so hot but so far the 1.6 Ecoboost has neither.

    I have noticed that JLT makes some nice separators with OEM style fittings so I asked them if they would make one for a Fiesta ST. They said they would eventually but so far have not. What they do have is a video showing the difference in performance comparing their separator to a ~direct copy. I don't want to directly copy their product but since I can't buy one yet I'm going to diy. Any way it seems like a path for the vapor with a couple turns where the heavier molecules probably slow down and begin to condense and then a filter with a ~large surface area that finishes the job. The copy didn't have the filter and it was not terribly effective.

    My plan includes a Matheson 450b gas purifier. I found one at a surplus store for $20, then bought a new sintered bronze filter for it. The filter is speced for 2,000 psi gas but since I'm going to run far lower pressure I'm not too worried about exceeding the temperature rating. There is one o-ring in the filter which is probably the weak point of the design when looking at temperature ratings, I bet sintered bronze will survive fairly high temps. Speaking of sintered bronze, its a quite large element and I was impressed that I could blow air through it with minimal resistance, far better than a cheapo compressed air oil separator from Lowes.

    And that's as far as I've got. The PCV hose is tremendously expensive and I'm not ready to cut mine in half. I've got to figure out how I can get OEM style fittings for cheap then I'll plumb it up.

    If you've got something working let us know.
    timboslice and amathophobia like this.
  2. Register or Sign in

    Advertisement Sponsor

  3. D1JL

    D1JL Well-Known Member

    I already have a catch can that I have had for many years and never used.
    I plan to install it soon.
    It looks like the only place to put it is on the inner right strut tower.
    I have already ordered another PCV hose assembly to scavenge the fittings.
    So we will see how it works out.

  4. wash

    wash Active Member

    What hose did you order?

    My Ford dealership parts counter only found a $340 assembly which is too much for me to hack up but probably not really what I need.
  5. D1JL

    D1JL Well-Known Member

    Well we will have to wait until it comes in to see if it is correct but the PCV hose I ordered was only 1% of that.
    At $340. I wouldn't need it either.

  6. reddog99

    reddog99 Active Member

    I would swear I remember that you posted that same thing on the Faction web site a long time ago. ;)

    Apparently, you never got around to installing it on the last Fiesta?
  7. D1JL

    D1JL Well-Known Member

    reddog you are correct.
    About the time I got around to installing it on the SES, I started thinking of getting the ST.
    Although I would have taken it off and kept it, the ST is a much better car to put it on.

  8. MOFiST

    MOFiST Member

    Old thread bump.
    D1JL did you ever get onto putting this on your car?
    I'm looking for ideas to fit an old can I have but not create a giant boost leak in the process.
  9. D1JL

    D1JL Well-Known Member

    I have in fact installed the can however not connected it.

  10. uploadfromtaptalk1401113930292.jpg uploadfromtaptalk1401113948699.jpg uploadfromtaptalk1401113965949.jpg Installed one from jegs, good for 150 psi here are some pics, I did a write up of the install on another forum and will link when I find it. It was pretty easy install.

    Sent from my HTC6500LVW using Tapatalk
    envyist likes this.
  11. WScottCross

    WScottCross Well-Known Member

    I got in on the Moroso catch can group buy discount with the Focus guys. The kit is made for the Focus ST, but can be modified to work with the FiST as well. I had to make a mounting bracket since the one in the kit was FoST specific. I mounted the can on the passenger strut tower so i can get to it and empty the can easily without taking the headlight out. The hoses supplied in the kit are 3/8" ID and the fittings on our factory PCV hose are 3/4". I struggled and forced the tiny rubber hoses over the large fittings, but doing so caused the hoses to split and come off after only a couple hundred miles. My solution was to go to the local Ace hardware store and buy 1/2" to 3/4" barbed adapter fittings and some 3/4" ID tubing. This has worked well for the last 1000 miles and here's the oil/fuel mix it has captured in 1000 miles (almost 1/8 full):[​IMG]
    Here is the system installed:

    I can provide more details if anyone is interested.
  12. jmrtsus

    jmrtsus New Member

    I installed the Diamond OCC............easy to drain. The last pic is when I drained it after 5000 miles, 25 ml or .85 oz.
    ScreenHunter_77 Jun. 20 19.10.jpg 20160818_154842 (1).jpg
  13. JBR has a can that works. They used my car for a mock-up using a can that they developed for Mazdas and the Focus. It has been refined since then. Their cans use perforated plates to precipitate out condensate just like the filter separators we use in natural gas regulator stations.
    In the winter, I usually get two or so ounce of precipitate out of it at each oil change (>3000 miles). In the summer, less than an ounce.
    Last edited: Aug 21, 2016
  14. Catch cans... LOL... :D
  15. eRic

    eRic Active Member

    got this one

Share This Page