N00B - What are these hoses?
11-29-2013, 08:08 PM
#1
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N00B - What are these hoses?
I am removing my intake air tube to put on a IAT bung.
I thought there was only an MAF sensor harness on the tube but there were two other hoses and I am not 100% what they are.
One runs from Green to Green and the other from Orange to Orange
- I suspect Orange Orange. Intake Tube to beneath intake manifold. I suspect it has to do with idle air control and connects to what appears to be a solenoid under the intake manifold. I have no idea how this mechanism works - what is it called so I can google?
- the second goes from Green to Green. Intake Tube to side of head (where I see some people have tiny little breathers sometimes), what is this?
As i go Turbo, where do I connect the idle hose? where to I connect the head hose?
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11-29-2013, 08:20 PM
#2
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Green to green is the crankcase vacuum. You can either vent it to atmosphere or hook it to your turbo inlet with a catch-can inline.
There is no hose traveling from orange to orange. The idle tube sits just to the right of your green circle.
There is no hose traveling from orange to orange. The idle tube sits just to the right of your green circle.
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11-29-2013, 08:33 PM
#3
PCV hook up somewhere in your intake/charge system. If you connect post turbo be sure to have the check valve as to not further pressurize the crankcase. I usually hook PCV from Valve cover to a catch can, back into the intake pre turbo. Look in the engine bay thread to get a better idea of where people traditionally route them as I only have turbo experience on Nissan, Subaru, and fwd bp.
IACV Needs to be hooked up as to allow a small amount of metered air to bypass into the intake manifold when the throttle butterfly is closed.
IACV Needs to be hooked up as to allow a small amount of metered air to bypass into the intake manifold when the throttle butterfly is closed.
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11-29-2013, 08:35 PM
#4
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Thanks Sav, sorry I should have explained: that is not my engine bay.
Orange went from the intake air tube (approx 1/2" OD) to beneath the inlet of the air intake manifold.
Pictures here:
The removed intake tube has a little bung where I had orange
The intake manifold has the inlet under the sock
Orange went from the intake air tube (approx 1/2" OD) to beneath the inlet of the air intake manifold.
Pictures here:
The removed intake tube has a little bung where I had orange
The intake manifold has the inlet under the sock
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11-29-2013, 08:36 PM
#5
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Aha!
PCV hook up somewhere in your intake/charge system. If you connect post turbo be sure to have the check valve as to not further pressurize the crankcase. I usually hook PCV from Valve cover to a catch can, back into the intake pre turbo. Look in the engine bay thread to get a better idea of where people traditionally route them as I only have turbo experience on Nissan, Subaru, and fwd bp.
IACV Needs to be hooked up as to allow a small amount of metered air to bypass into the intake manifold when the throttle butterfly is closed.
IACV Needs to be hooked up as to allow a small amount of metered air to bypass into the intake manifold when the throttle butterfly is closed.
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