Wastegate question - IDI Engine - VWDiesel.net The IDI, TDI, and mTDI source.

• Wastegate question by Jettage1 on 03 Jun, 2009 17:46
• On my ECO K14 turbo setup, there's no BOV, but I believe there is a wastegate - down below the turbo.  It has a threaded shaft with a hex (allen key) opening on the end of it and a locknut.  If I wanted to increase boost (raise the wastegate opening pressure), am I correct that I need to turn the threaded shaft inward (clockwise) ? 
  
  If so, I assume that  when one can't turn it further in, it is essentially locked closed (max boost, no relief) Is this right?
  
  Thanks!
  
• #1 by anto on 04 Jun, 2009 01:33
• Yes thats how i do it on my k14.
  
• #2 by Jettage1 on 04 Jun, 2009 17:33
• Okay, not too be too clueless here, but is it actually a locknut on the threaded shaft?  I tried pretty hard to loosen it while holding the shaft with the allen wrench, but nothing.
  
  More elbow grease?  or am I doing something wrong?  (I've learned to double-check before blindly charging ahead...)
  
  Thanks in advance.
• #3 by anto on 05 Jun, 2009 00:33
• Is there an alternative i could use to regulate boost further?
  
  At the minute i have the threaded shaft all the way in, 26psi max on a 1.9 turbo diesel peugeot 306.
  
  Ive noticed what you descirbe andrew but until now i hadnt understood why it did it, i thought it was designed to do that. Previously had it around 21psi but in 5th flat out it would rise to 23psi, something it wouldnt do in 2nd/3rd for example, was i experiencing what you describe?