Doughnut delete, modified stock pipe, and hose, clamp, ready to install

Discussion in 'Fiesta ST Parts for Sale' started by raamaudio, Apr 20, 2014.

  1. raamaudio

    raamaudio Active Member


    NEW PRICE, $39 Shipped OBO, going soon as I have an offer:)

    For $39 shipped, which will cost around $10 to ship them, you get the $22 hose, $2 SS hose clamp, the pipe out of the turbo so you can leave yours stock if needed later on...and the time to go get parts, fuel to get the parts, time to do the work, all you have is a few minutes time to invest and done[​IMG]

    If delete your own and later need to have a stock one it will cost you a great deal more;)


    Fast and simple way to delete your doughnut. First mod on my car but no miles as the car is on the lift for major mods and I just built a 2" all tubing one to replace this as going to a larger turbo as soon as available, this is all you need for a stock turbo.

    Get this and keep your stock doughnut intact if you ever need it for any reason.

    See the picture and link here, the hose looks much better in person, nice and black, I cleaned it up a bit, it is a high grade hose that cost $22.

    $49 shipped in cont US, OBO, OBO, OBO:)

    Last edited: Jun 29, 2014
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  3. raamaudio

    raamaudio Active Member

    Still available, surprised it has not sold actually and the price is OBO....keep your stock pipe if ever needed, install this.....easy and low cost way to clean up the flow.....:)
  4. raamaudio

    raamaudio Active Member

    Updated, new lower price, $39 shipped OBO
  5. RR3

    RR3 New Member

    My apologies for reviving an old thread. I reconfigured the hot-side intercooler piping today, the "donut" does not appear to be a resonator or sound modifier. It appears to be a reservoir for containing the oil that comes from the turbo, keeping it out of the intercooler. Removing this unit will ultimately allow oil to enter the intercooler at an increased rate. I doubt this will hinder performance, but it does make a mess...
  6. F1ST

    F1ST Member

    Does the unit somehow allow the pooled oil to slowly 'aerate' during driving and empty? Is that part of its function? I don't think we are regularly opening the system and draining this oil.
  7. raamaudio

    raamaudio Active Member

    It may contain some oil but that might be indicative of a problem with your turbo oil seal as no oil should be found there very, very little if any at all. There is no separator, it would allow any oil vapor to simply pass right by and only trap what is leaking out of the turbo when you shut it down, etc.....It is not an oil trap, it if was it would be listed as a maintenance item and have a way to clean it out.
  8. Sekred

    Sekred Active Member

    raamaudio is correct. It is not designed to collect oil but it does actually accumulate a small amount of oil as a unintended consequence of how it functions. I have removed the intake tube on my ST looking for traces of oil when I was deciding on a oil catch can. Couldn't find anything in the intake tube but latter on when I pulled off the turbo outlet pipe to replace it with a 2inch hard pipe and delete the donut, the donut itself had collect a small amount of oil inside its cavity.
  9. raamaudio

    raamaudio Active Member

    I was thinking back to prior boosted cars, NA ones I boosted, boosted ones I added more boost to......a little oil is normal....a lot is not.
    If we can figure out a way to capture that oil before it goes into the intake manifold....................even better before the IC.............
  10. RR3

    RR3 New Member

    I was thinking back to prior boosted cars, NA ones I boosted, boosted ones I added more boost to......a little oil is normal....a lot is not.
    If we can figure out a way to capture that oil before it goes into the intake manifold....................even better before the IC.............

    Ford may have already done that... :p. I have a 6.0, and a 7.3 PSD, both have a lot of oil in the IC from years of use.

    That specific part (donut) may not be serviceable, but it is removable (soft pipes on both sides) and could be removed and drained. I cut it open and found oil in the reservoir closest to the turbo. I have roughly 1100mi of mixed highway and track driving on the car. It does not appear that there is really any sound-affecting baffling inside the unit, thus my thoughts as a oil-catch use.
  11. raamaudio

    raamaudio Active Member

    I am not an audio engineer.

    But, I have spent over 50 years playing around with acoustical issues in various ways, I built some horn loaded speakers when I was around 12 years old, built most all my home audio speakers since then. I have studied car audio acoustics, been an audio judge, competitor, beaten a world champion, been published, owned a sound deadening company for 15 years, have demoed a system for the owners of the oldest HiFi shop in the US(HiFi was here before stereo) and they were amazed at what can be done in a vehicle. I spent 20 years in electronics in the USN, was in charge of rebuilding the second largest control center and worked out all the acoustical issues, decided upon and ordered all products and oversaw installation. I have designed and built labyrinths to trap acoustical energy for various reasons....again not an engineer but have worked with many including the prior head acoustical engineer at NASA, I have his horn loaded speakers in my living room, I have a bit of an idea of how acoustics work but always more to learn, of course:)

    The device on the car may pick up oil but it is not an oil trap by design, that is a side effect, could be intentional, makes sense it would, if just an oil trap it would be quite different in structure. It is absolutely a trap for a specific frequency range which most likely is the turbo whine but could be for the noise some love to here between shifts or both, I would have to say it seems more for the turbo whine like the chamber on the tube that feeds the manifold on my Duramax.

    I am glad it picks up oil and I am going to dig into this a bit and see what can be done to replace it with the 2" piping I built, there may be a product for this I can simple weld in, etc.....

    Most sincerely,
  12. raamaudio

    raamaudio Active Member

    SOLD, Shipping Tomorrow:)

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