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

[David.Ullrich at ferguson.com]

OK, so it CAN be done. So, is it worth it? What kind of power would it make? 8:1 CR seems low to me, but the extra valves help make up. So is a break even deal? Of less power? Coming up with custom exhaust shouldn't be a problem. So, how hard would the fueling issues be to correct?

Dave

1987.5 Audi Coupe GT "Special Build" 2.3 - Anthracite Black
1998 VW Passat GLS 1.8T - For Sale CHEAP


-----Original Message-----
From: JShadzi at aol.com [mailto:JShadzi at aol.com]
Sent: Thursday, May 02, 2002 3:45 PM
To: "Brady Moffatt"; "Ken"; quattro at audifans.com
Subject: Re: Re: Can it be done? 20V head on a 2.3 NG?


The 10v comb. chamber is 29cc, the 20v is about 38cc, the resulting drop in compression is more like 8:1, not 7:1.  Yes, the head fits perfectly, you can even use the stock NG head gasket, the real issue is intake/exh. configuration and proper fueling.

Javad

In a message dated Thu, 2 May 2002  3:20:55 PM Eastern Daylight Time, "Brady Moffatt" <bradym at sympatico.ca> writes:

>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.
>