Feeding TD manifold through the bypass valve port? - IDI Engine - VWDiesel.net The IDI, TDI, and mTDI source.

• Feeding TD manifold through the bypass valve port? by hamradio on 17 Feb, 2009 18:17
• So, another thread with crazy ideas from me.  
  
  
  
  Would it work to feed the 1.6 td intake mani through the BPV hole?  I am not a fan at all of the tight bend on the top of the manifold, and the overall inner diameter of it.  It would eliminate a bend in intercooler piping for me, as well.
  
  
  
  Or, would it be a total wasted effort?
• #1 by jtanguay on 17 Feb, 2009 21:33
• Quote from: "hamradio"

  So, another thread with crazy ideas from me.  
  
  
  
  Would it work to feed the 1.6 td intake mani through the BPV hole?  I am not a fan at all of the tight bend on the top of the manifold, and the overall inner diameter of it.  It would eliminate a bend in intercooler piping for me, as well.
  
  
  
  Or, would it be a total wasted effort?

  
  
  i don't think its really big enough...  plus cylinder 1 & 2 would be biased (pressure wise)..
• #2 by arb on 18 Feb, 2009 06:22
• Have you measured the diameter of the BOV ? Rather small I think. I'd make / buy tubing to make your IC work with the stock manifold. Do you have 2 ports on your intake for the intake air ? Mine has one on top, and one on the rear. If you do to, what if you switched the block off plate and intake flange? Would that help your plumbing problem?
  
  
• #3 by zukgod1 on 18 Feb, 2009 07:06
• I wonder if you couldn't use both ports, that way your not biasing 2 and 3 and the extra flow from the side of the intake may force some of the flow to #4?
  
  If you had a manifold like the one ARB posted another option would be to make a plate that goes between the manifold and inlet with a diffuser in it, like a splitter sorta. Clear as mud?
• #4 by VW Fox on 18 Feb, 2009 08:12
• Pardon my longitudinally-biased knowledge. You can't easily use an 8v gasoline intake manifold in a transverse setup, can you?
  
  
• #5 by truckinwagen on 18 Feb, 2009 08:40
• that is what I am currently doing on my motor, 8v Gasser intake, it has a nice big plenum to equal out the pressure. the runners are kinda long, but you cant have everything out of recycled old parts.
• #6 by hamradio on 18 Feb, 2009 08:43
• Hmmmm...
  
  
  As for an 8v mani,
  
  As the car sits right now, I'm using a vnt.  So turbo interference is not an issue.  I'm on the verge of putting a t03 or something larger on, but I would be making my own log manifold, so not many worries there...I can make the mani to my liking in terms of turbo position.
  
  
  I do like how the 8v gasser manifold appears to flow much nicer.  I feel that the stock 1.6td intake mani is a restrictive unit.  
  
  
  I'm also considering making something like the passenger performance intake...
  
  
  
  I guess I'm basing all of this on the thought that a boost gauge showing PSI is measuring restriction.