AAZ valves? - IDI Engine - VWDiesel.net The IDI, TDI, and mTDI source.

• AAZ valves? by Powered by Spearco on 25 Nov, 2008 22:31
• What are the exhaust valve filled with on an AAZ TD?
  Are they sodium filled?
  Is there an aftermarket upgrade valve available? 1mm oversize.
  Also, upgrade proformance camshaft.