No subject

or between the valve seat and the threads of the spark plug holes can be 
reused and resurfaced without reducing the service life if the crack(s) do 
not exceed a width of 0.5mm (.020in)."

-Cody Forbes

----- Original Message ----- 
From: "Bares, Vittorio" <Vittorio.Bares at nuance.com>
To: "chris chambers" <fastscirocco_2000 at yahoo.com>; "Scar" 
<s-car-list at audifans.com>
Sent: Wednesday, September 23, 2009 8:08 AM
Subject: Re: [s-cars] Are all Audi AAN heads cracked?


I just changed the HG on my AAN head. My head has cracks - and I've been 
told by this list as well as on Motorgeek that this is just the way it is. 
We live with it - apparently without adverse effects. I replaced my head 
with one that had no cracks - I just happened to come into one through a 
series of events.

I will say that the machine shop was not comfortable with the cracks.

Vittorio -
-----Original Message-----
From: s-car-list-bounces at audifans.com 
[mailto:s-car-list-bounces at audifans.com] On Behalf Of chris chambers
Sent: Wednesday, September 23, 2009 8:02 AM
To: Scar
Subject: [s-cars] Are all Audi AAN heads cracked?

Gentz,

I have a friend searching for a good uncracked AAN head.
He just found out that the head he had purchased that was described as havin 
been
rebuilt ~10,000 miles; has cracks in all 5 cylinders, with multiple cracks 
in 2,3 & 5.

So my questions are:

1. Do all of these AAN heads have cracks and we simply live with them or is 
he just having a hard time?

2.I have an unmolested stock engine (car wasn't chipped) that runs well, if 
I pull the head off that for him
is it likely that I will discover it has cracks in it's head.

3. What is the best way to check a running engine for cracks in the head?


Regards
Chris




_______________________________________________
S-CAR-List mailing list
http://audifans.com/mailman/listinfo/s-car-list
http://www.audifans.com/kb/List_information
_______________________________________________
S-CAR-List mailing list
http://audifans.com/mailman/listinfo/s-car-list
http://www.audifans.com/kb/List_information