New head - IDI Engine - VWDiesel.net The IDI, TDI, and mTDI source.

• New head by somepunk22 on 17 Oct, 2010 15:12
• After a lot of Passenger Perfomance built head issues, I broke down and purchased a "new" one. This will be for a '84 TD with some hop ups. Before I start tearing it down to swap springs and port, I figured I would get opinions here first. After a bit of searching, I haven't seen anyone bring up a Q head. 068 103 373Q
  
  
  
  
• #1 by Henchman on 17 Oct, 2010 16:08
• Is it new or rebuilt?  Did you paint it?  The mating surfaces for intake, exhaust, coolant gaskets will have to be cleaned.  Bigger issue would be the paint down in the injector and GP holes.  There is pitting around 3 of the exhaust ports and a few spots on the entire mating surface.  The valve cover mating surface has a gouge.  I assume the crankshaft is used, being all worn and rusty.  I would chase any threads that have paint in them for sure.  Other than that, she's mint!
  
  Ian
• #2 by mystery3 on 17 Oct, 2010 16:24
• IIRC not a lot of info can be gleaned from the casting numbers.
• #3 by somepunk22 on 17 Oct, 2010 17:41
• Supposedly "new". I did not paint it. No gouge on the valve cover mating surface. Crankshaft? Do you mean cam? A little bit of surface rust, but easily wipes away.
  
  

  Quote from: Henchman on 17 Oct, 2010 16:08

  Is it new or rebuilt?  Did you paint it?  The mating surfaces for intake, exhaust, coolant gaskets will have to be cleaned.  Bigger issue would be the paint down in the injector and GP holes.  There is pitting around 3 of the exhaust ports and a few spots on the entire mating surface.  The valve cover mating surface has a gouge.  I assume the crankshaft is used, being all worn and rusty.  I would chase any threads that have paint in them for sure.  Other than that, she's mint!
  
  Ian
  
• #4 by Quantum TD on 17 Oct, 2010 18:44
• Quote from: mystery3 on 17 Oct, 2010 16:24

  IIRC not a lot of info can be gleaned from the casting numbers.
  

  
  Exactly. The suffixes really don't indicate much in my experience. I've seen just about any letter suffix on heads for TD and NA applications.