If I may offer this:   The reason I asked about your
head gasket is because you did as I suspected. Just my
$.02 here on your work....but when you loosened the
nuts, you should have removed the head, re-annealed
the copper gasket, and reinstalled and torqued.  Once
the torque is removed from copper, it will not
properly reseal (combustion pressures)unless it is
replaced with a new one, or annealed to soften it back
up. In a turbo motor such as yours, this is imperative
because of the increased combustion temps. 

Again, just my $.02 from years of building air cooled
stuff...

If you want to know of a good annealing process, I'd
be gld to offer. 

Scott

--- Orma <o...@aviation-mechanics.com> wrote:

> Yes, burned under the copper gasket and eventually
> through the copper 
> gasket.   I'm going to talk to my VW guy today and
> have him look at the 
> head..  The color of the deposits in the head, look
> to be on the lean side. 
> The gas escaped at the top.  Which is where I had
> removed the nuts to 
> install the cht senders.  There was torque on the
> nut, when I went to remove 
> them, it's just that the gas escape pattern suggests
> that there was 
> looseness at the top.   With the turbo putting more
> pressure on the engine, 
> the problem may be other.   When I get back to the
> plane today, I'm going to 
> play with the other head and see what the torque is
> like on that side.
> 
> Orma
> Southfield, MI
> KR-2  N110LR  1984
> See Tweety at http://www.kr-2.aviation-mechanics.com
> See other KR spces at
> www.kr-2.aviation-mechanics.com/krinfo.htm
> 
> 
> 
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