Heads, blocks, and turbos

[Rory [Armodis.List]]

Cool, it sounds like I'm on the right track.  I used that combination
of parts because I knew it was unlikely the manifolds would be
interchangeable.  I don't have any parts yet...

Tony and Huw, you both had compression numbers for head/short block
combinations.  The Bently tells me everything about my short block,
but what would I need to know about alternate heads to derive the new
compression?  Is there a specific set of measurements I can ask for?
I have a mechanic friend who doesn't like working on Audis, but has
access to the electronic manuals.  I'm sure he would give me the
numbers if I knew what I was asking for.

Thanks
Rory

On 2/20/07, Huw Powell <audi at humanspeakers.com> wrote:
>
> > They don't use the whole 20V NA because it's 10.5:1 compression, too
> > high to
> > add a turbo to that design of engine.
>
> D'oh, of course.  I was thinking 20vt, when of course those are very
> rare.  20v head, 2.3 block, and you've a homemade 20vt that will work.
>
> --
> Huw Powell
>
> http://www.humanspeakers.com/audi
>
> http://www.humanthoughts.org/
>