Power engine build do I use the AAZ or 1.6 GTD block - page 3 - IDI Engine - VWDiesel.net The IDI, TDI, and mTDI source.

• #30 by 8v-of-fury on 09 Jul, 2009 14:52
• Quote from: Rabbit on Roids on 09 Jul, 2009 08:44

  i actually could feel the difference in my tired 1.6 when i cleaned up the ports.
  

  
  Coulda been some placebo effect, no? LOL kidding. Well obviously you will feel power if the engine has to work that much less to get air in.. it will be able to use that energy else where
• #31 by Rabbit on Roids on 10 Jul, 2009 10:32
• well, the port castings were some of the worst i have ever seen. a couple of the ports had spots that had to be taken down almost an 8th inch in spots to be level with the runner floors and walls.
• #32 by Syncroincity on 10 Jul, 2009 18:46
• YIKES... The machine shop wants $850 for a mild polish & valve job. For that money, I'll buy a bag of Dremel sanding drums and spend a day or two doing it my own damn self. Gotta Giles pump to pay for soon. Wish I could find my flex drive...
  
  My AAZ ports are actually pretty smooth, except where the internal sections join together, there's a seam that needs to go away, and a nasty little lip just beyond the steel valve seat insert.
  
• #33 by Syncroincity on 21 Jul, 2009 03:51
• Well, I did it my self. Check the build thread: http://www.vwdiesel.net/forum/index.php?topic=19739.msg156850#new
  Fairly painless, it just takes a while... make that a day or three.
• #34 by myke_w on 21 Jul, 2009 11:53
• I might add - the 1.9 head has bigger prechambers which can handle more heat than the 1.6 too.
  
  1.6 block with 1.9 head revs fast, gets lots of flow and will be able to take more of a beating.