What are the ill effects of having too large an oil feed line?
11-01-2004, 11:34 AM
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What are the ill effects of having too large an oil feed line?
Just curious what would happen if your turbo oil feed line was too big?
11-01-2004, 11:53 AM
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Re: What are the ill effects of having too large an oil feed line? (Tactic$)
You will have too much pressure and flow going throught the lines and you will get oil coming out of the seals..
11-01-2004, 03:50 PM
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Re: What are the ill effects of having too large an oil feed line? (tgreaves)
You will definitely get oil in the charge pipes and most likely blow a seal. You will also need to have a good oil drain or the same problems will occur.
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11-02-2004, 12:52 PM
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Re: (beta13)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by beta13 »</TD></TR><TR><TD CLASS="quote">Smoke at idle, nocicable smoke when you come to a stop. Had that problem and putting a restrictor in my -4 line fixed it.</TD></TR></TABLE>
yea I know I need the restrictor, but seeing as it isnt running no need to hurry up.
yea I know I need the restrictor, but seeing as it isnt running no need to hurry up.
11-02-2004, 01:38 PM
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Re: What are the ill effects of having too large an oil feed line? (Finest)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Finest »</TD></TR><TR><TD CLASS="quote">I always thought a larger feed line would = less pressure.
</TD></TR></TABLE>
The bigger line allows a higher volume of oil to pass through and will cause problems.. With a smaller line it limits the volume of oil thus reducing the pressure at the turbo..
</TD></TR></TABLE>The bigger line allows a higher volume of oil to pass through and will cause problems.. With a smaller line it limits the volume of oil thus reducing the pressure at the turbo..
11-02-2004, 01:58 PM
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Re: (Boltz)
Hopefully you have an 1/8"NPT inlet on your turbo because it is REALLY easy to find restrictors for that size. If you have 1/4"NPT like the newer T3/T4's it's pretty hard to find something that works without having to make a mess using adapters.
11-02-2004, 03:52 PM
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Re: What are the ill effects of having too large an oil feed line? (tgreaves)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by tgreaves »</TD></TR><TR><TD CLASS="quote">
The bigger line allows a higher volume of oil to pass through and will cause problems.. With a smaller line it limits the volume of oil thus reducing the pressure at the turbo..</TD></TR></TABLE>
But if the line is physically smaller and you're still pushing the same amount of oil pressure through it, then wouldn't that create a high pressure situation? Also, if the oil drain is sufficient, there shouldn't be any oil backup, correct?
The bigger line allows a higher volume of oil to pass through and will cause problems.. With a smaller line it limits the volume of oil thus reducing the pressure at the turbo..</TD></TR></TABLE>
But if the line is physically smaller and you're still pushing the same amount of oil pressure through it, then wouldn't that create a high pressure situation? Also, if the oil drain is sufficient, there shouldn't be any oil backup, correct?
11-02-2004, 04:21 PM
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Re: What are the ill effects of having too large an oil feed line? (Finest)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Finest »</TD></TR><TR><TD CLASS="quote">But if the line is physically smaller and you're still pushing the same amount of oil pressure through it, then wouldn't that create a high pressure situation?</TD></TR></TABLE>
You're running the same amount of pressure but less VOLUME. The high pressure along with the volume of oil you get from a big oil line is what will blow your seals out. Your oil outlet on your turbo has to be able to get rid of the oil your supply line is pumping in too. If you're pumping in more oil than you're getting rid of you're going to blow seals out.
I can't think of any good "plain and simple" examples off the top of my head right now. Hopefully you can understand what I'm trying to say.
You're running the same amount of pressure but less VOLUME. The high pressure along with the volume of oil you get from a big oil line is what will blow your seals out. Your oil outlet on your turbo has to be able to get rid of the oil your supply line is pumping in too. If you're pumping in more oil than you're getting rid of you're going to blow seals out.
I can't think of any good "plain and simple" examples off the top of my head right now. Hopefully you can understand what I'm trying to say.
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