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Thread: Rajicase's First Turbo Build, Ballin' On A (Nonexistent) Budget

  1. #4201
    Join Date
    Apr 2015
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    Quote Originally Posted by Butters Stoch View Post
    Tag team bitches.

    The outside world from BFC FI are going to confirm this BMW group is a bunch of homosexuals and transgenders. We will run for office.

    Maybe we should have our own government here on BFC/FI.
    We could vote, have parties, campaign the whole 8 yards. Its been getting a bit boring. That could stir the pots.

    Sent from my E6782 using Tapatalk
    Maybe if you smoked the pots instead of stirring them it wouldnt be so boring

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  2. #4202
    Join Date
    Oct 2004
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    '97 540i/6, '97 328i
    Quote Originally Posted by Butters Stoch View Post
    In all seriousness, MilkT had a huge role in this venting business here on BFC. Back in 2012 or 2010 he started up a good thread about this. It ultimately solved my issue with oil getting into the pipes. Obviously the practice has been around for some time. MikeR probably brought it to BFC attention. But, Craig started up a nice discussion about it.
    Would you happen to remember some key search terms to help home in on one of the best threads on this topic? Searching something like "turbo oil drain vent" turns up a ton of most likely irrelevant stuff...

  3. #4203
    Join Date
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    08 E90M3; 99 E36M3 Turbo
    I have never needed a vent. Bottom mount, 4 different turbos, 3 different manifolds, gravity drain on some, 2 different scavenge pump systems on others. Always used a restrictor, always ball bearing turbo, boost as high as 24 psi.

    HPF was an early user of vents. They found it necessary only on high boost cars. Their kits all used scavenge pumps and mostly used journal bearing Precision turbos (jb tend to require more oil). Search HPF drain vent.

    I don't see any reason why a vent would hurt, so adding on should do no harm. I don't think a scavenge pump is relying on suction so a vent won't cause it to suck air. I think scavenge pumps work best with the drain line to them sloping gently down from the turbo. I would not ask one to pull the oil uphill, but they can pump uphill for the return.

  4. #4204
    Join Date
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    95M3 92525iT 78810 95525
    Quote Originally Posted by tptrsn View Post
    Would you happen to remember some key search terms to help home in on one of the best threads on this topic? Searching something like "turbo oil drain vent" turns up a ton of most likely irrelevant stuff...
    "turbo" and "scavenge" in "FORCED INDUCTION" will do the trick.
    __________________________///milKt.org


  5. #4205
    Join Date
    Oct 2010
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    Manchester, N.H.
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    96 332IS 6466 turbo
    Quote Originally Posted by pbonsalb View Post
    I have never needed a vent. Bottom mount, 4 different turbos, 3 different manifolds, gravity drain on some, 2 different scavenge pump systems on others. Always used a restrictor, always ball bearing turbo, boost as high as 24 psi.

    HPF was an early user of vents. They found it necessary only on high boost cars. Their kits all used scavenge pumps and mostly used journal bearing Precision turbos (jb tend to require more oil). Search HPF drain vent.

    I don't see any reason why a vent would hurt, so adding on should do no harm. I don't think a scavenge pump is relying on suction so a vent won't cause it to suck air. I think scavenge pumps work best with the drain line to them sloping gently down from the turbo. I would not ask one to pull the oil uphill, but they can pump uphill for the return.
    You also haven't ran a Precision JB turbo. I had no issues with mine till 20#. Being all the manifolds I have run, have been a 20# min. When I was running a Garrett, didn't need one at all.

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  6. #4206
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    Quote Originally Posted by milKt View Post
    "turbo" and "scavenge" in "FORCED INDUCTION" will do the trick.
    Thanks!


    Quote Originally Posted by Butters Stoch View Post
    You also haven't ran a Precision JB turbo. I had no issues with mine till 20#. Being all the manifolds I have run, have been a 20# min. When I was running a Garrett, didn't need one at all.

    Sent from my E6782 using Tapatalk
    My Precision turbos were a pain in terms of oil burning too. My China turbos have been perfect other than the one I have on my E36 is beginning to smoke pretty badly at times. I'm probably going to play around with venting the drain like this since I've never tried it.

  7. #4207
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    I love being from the state that's about to elect a kiddie diddler to the US senate...

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  8. #4208
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    Innocent... until murdered in his front yard by an upstanding citizen.
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