Can it be done? 20V head on a 2.3 NG?

[Brady Moffatt]

Yup, I'd imagine that in order to fit 2 more valves into a combustion
chamber, you might have to make it a bit bigger, and/or dish the pistons a
bit more. However, to drop the CR from 10:1 to 7:1 you'd have to add almost
26cc to the volume. That's a 50% increase! That seems _highly_ unlikely.

On the same topic, has anyone found a site that has all the various piston
dimensions, combustion chamber volumes, pin heights, rod lengths,..... for
I-5 Audi motors? It would make these (entertaining) theoretical debates more
factual.

Cheers,
Brady

----- Original Message -----
From: "Ken" <auditude at get.net>


> Hi,
>
> I would think the 4 valve head is dished, so that the valves can fit, as
is typically(?) done by automakers.
>
> It would be more for room than turbo or not.
>
> Also, they need to be concerned not only about available real estate in
the combustion chamber, but the extra ports need a place in the meat of the
head as well, which would require some changes.
>
> Later,
>
> Ken


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