2.3 head vs. 2.2 head

[JShadzi at aol.com]

Ben, it would be hard to prove this or be fairly certain of anything w/o testing, but its tempting to make assumptions like this.  

I recently flowed a stock 7A head with and w/o the 7A intake manifold, and at even .5" lift, there was virtually no difference in flow #'s.  I even have a 7A IM cut off from the head flange about 2" up, no difference wtih this manifold either.

Javad

>I am fairly certain that the NG configuration  also provides better flow
>characteristics than the NF head due to the manifold design.  The intake
>works to channel the air and fuel directly into the intake valve, and across
>the CC almost like a crossflow head.  I may be corrected on this, but after
>dealing with the different styles, that is what I conclude based on my
>observation.
>
>This has nothing to do with throttle body size or position and AFAIK they
>can use the same TB.
>
>Ben
>
>[Date: Tue, 24 Feb 2004 14:47:06 -0500
>From: "Denis Julien" <sparkplugvw at hotmail.com>
>Subject: Re: 2.3 head vs. 2.2 head
>To: <quattro at audifans.com>
>Message-ID: <BAY8-DAV41IkLeoOWGM00000b45 at hotmail.com>
>Content-Type: text/plain; charset="iso-8859-1"
>
>Ok i see. The problem is to cut and weld the intake to fit trottle body in
>the right direction. So it ll breath better... right ?
>
>Denis J
>----- Original Message ----- 
>From: "Huw Powell" <audi at humanspeakers.com>
>To: "Ben Swann" <benswann at comcast.net>
>Cc: "Denis" <sparkplugvw at hotmail.com>; <quattro at audifans.com>
>Sent: Tuesday, February 24, 2004 2:39 PM
>Subject: Re: 2.3 head vs. 2.2 head
>
>
>>
>>
>> > Yes - bolts right on.  That is what I'll be doing.  You need to procure
>the intake however.
>>
>> If it's a head from an engine with the 2 piece IM, yes (NG and some
>> later NF's).  The early NF head uses the same IM as most of the other
>> I-fives.
>>
>> > [Do the 2.3 head bolt on MC block ? (i think NO)
>>
>> -- 
>> Huw Powell
>>
>> http://www.humanspeakers.com/audi
>>
>> http://www.humanthoughts.org/]
>>
>
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