The problem with your proposed approach is that your 1.6L block is designed
for indirect injection, with offset prechambers and pistons configured for
this offset flame-front.  TDI engines are direct injected, and thus have no
separate prechambers.  The pistons are completely different.  I don't think
there were any direct injection pistons made with 1.6L bores.  I believe you
can bolt a 1Z/AHU TDI head onto an 1.9L AAZ block, if you also swap in the
pistons.  That's the long way around an answer to your question--no, you
can't

On Fri, Jul 29, 2011 at 7:21 AM, ralph meyermann
<ralphmeyermann@gmail.com>wrote:

> Hi all Im still learning about my first vw/westy. Most of my engine builds
> have been domestics, I know that most small block chevy's the heads will
> interchange. My question is could a head from a tdi bolt up and work on my
> 1.6 na block? I know they are similar blocks but don't know how close they
> are? Thanks
>

--
Casey