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| The Pub For General Automotive Related Talk |
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05-05-2023, 01:23 PM
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Regular Member
Join Date: Oct 2019
Location: Earth
Posts: 448
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Plain and simple how do they get vacuum??
It's just one of those stupid things that's been on the back of my mind ever since I had my XD Fairmount (F I miss that car😭 lol). Seen on in a magazine somewhere that one had ITB on a six and has always wondered how it would get vacuum |
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05-05-2023, 02:24 PM
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#2 | ||
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FG XR6 Ute & Sedan
 Join Date: Oct 2006
Location: Bibra Lake WA
Posts: 23,386
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By ITB do you mean an injection throttle body (e.g. CFI) or independent throttle bodies as those initials are used for both things. In any event the are both mounted on the inlet manifold which is the best source of vacuum you will find; or have I misunderstood what you mean by "how it would get vacuum?"
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regards Blue |
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05-05-2023, 02:42 PM
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#3 | ||
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^^^^^^^^
  
Join Date: Jan 2005
Location: online - duh
Posts: 9,641
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I think were talking ITB as Individual Throttle Bodies, at least that's what I call them, just to introduce a 3rd possibility.
Vacuum occurs when a cylinder on the inlet stroke is trying to draw more air in than it can actually get through the ITB - they still have throttles to limit the air flow. .
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05-05-2023, 02:47 PM
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#4 | |||
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Regular Member
Join Date: Oct 2019
Location: Earth
Posts: 448
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Quote:
I don't know C**P about carbies but I'm pretty sure they needed vacuum to work. If I remember right my Xd with its 2 barrel Webber (of a XE ) had a vacuum line from a T fitting on the back of the intake manifold |
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05-05-2023, 02:51 PM
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#5 | ||
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FF.Com.Au Hardcore
Join Date: Jan 2011
Posts: 1,382
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I sell these collector kits to overcome the vacuum sourcing issue.
See:https://raceworks.com.au/sensors/air...ollector-kits/ Part No. ALY-054-6 for a 6-cyl. Dr Terry |
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05-05-2023, 02:58 PM
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#6 | |||
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Regular Member
Join Date: Oct 2019
Location: Earth
Posts: 448
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Quote:
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05-05-2023, 03:48 PM
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#7 | |||
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FF.Com.Au Hardcore
Join Date: Jan 2011
Posts: 1,382
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Quote:
Dr Terry |
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05-05-2023, 05:02 PM
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#8 | |||
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Regular Member
Join Date: Oct 2019
Location: Earth
Posts: 448
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Quote:
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Theoretical question about ITB's
Linear Mode
