Re: audi 2.0 head

["Ewan Hopkins" <ewanhopkins@hotmail.com>]

>From a practical point of view, there is little difference between the audi 
& VW-CIS head - the audi is CIS, albeit with a motronic ECU, and the VW CIS 
injectors are plug'n'play.   The audi manifold, which you would have to use 
if you keep the audi head, has bigger runners (AFAIK) and the bigger bore 
throttle bodies are a striaght bolt-on, no porting necessary.  The only 
thing I'm not sure about is the head profile, i.e. would putting a standard 
VW head drop the compression? If you are running CIS without knock sensors 
this would probably be beneficial as they are prone to pinking otherwise.

HTH,

Ewan Hopkins


>From: T Berk <tberk@mindspring.com>
>To: Todd Detwiler <todd_detwiler@hotmail.com>
>CC: scirocco-L@scirocco.org
>Subject: Re: audi 2.0 head
>Date: Sun, 14 Jan 2001 23:49:12 -0800
>
> > Todd Detwiler wrote:
> >
> > Hey guys, I am putting an Audi 3A 2.0 in my mk1 and I have been
> > searching the net for some info on my head. Does anyone know any info
> > about the head on this Audi engine? Specifically I am wondering what
> > size valves it has in it. Also I would like to know how if the intake
> > manifold will fit one of the big VW throttle bodies without requiring
> > porting. I have not been able to find any Audi sights that contain
> > these kinds of specs. If anyone could point me to some I would
> > appreciate it.
> > Thanks,
> > Todd
>
>
>
>The main reason you don't see any info about this is most folks use just
>the 'bubble block' bottom end and doft the head in favor of a CIS based
>topper- 84 GTI with it's big valves being the classic example.
>
>I believe you will be grafting in a lot more of the donor Audi if you
>retain the head. Good news is the height of the 3A is the same as the
>orig., means you don't need a longer down pipe. Also, since you might be
>pulling the head off something, it's easier to get the valve job and
>rebuild we all know we need but never get to. Bad news is the need to
>graft a few bits together to make it all work.
>
>GL, hth-
>TBerk
>
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