Tony,

The 112 Hp "DJ" engine code wasser boxer is running 10 to 1 compression pistons. 
With a Digijet injection system, with no oxygen sensor or knock sensor.
If you wanted to change to the DJ pistons you would really need to retard your timing and always run premium fuel.
There is a kit sold in German to bring the 2.1L up to a 2.5L

Cheers
Glen 
  ----- Original Message ----- 
  From: Smola, Tony 
  To: vanagon@GERRY.VANAGON.COM 
  Sent: Thursday, March 14, 2002 4:26 PM
  Subject: Euro Vanagons 2.1L have 112 horsies......how do they accomplish t his?.....compression @ 10:1?.....G-cam?

  I can get a 2.2L for under $2000, but I really want to put in a 86mm crank
  to get it up to 2.4L and tons more torque

  How do the Europeans accomplish 112-115 BHP from their 2.1L motors?

  email me the answer and you will get a cookie

  Malibu Tony    1.9L.......eventually a 2.2L or 2.4L if I can find the
  pistons cheaply