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

[Ken]

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

Brady Moffatt bradym at sympatico.ca wrote:
>
> Why would putting a 90q 20V head on an NG drop the compression so much? The
> 20V is a 10.3:1 motor while the 10V is at 10:1. Pretty close. Did Audi move
> all the combustion area into the head on the 20V while the 10V had a more
> significant piston dish? Possible, but seems unlikely to me since they're
> both non-turbo heads.