Hi Steve;
    I did this back in 2004, so I just included a link to my original post.
http://lancaironline.net/lists/flyrotary/Message/8406.html?Language=
In order to drill through the manifold I had to use a grinder to cut a small flat spot and get through the surface hardening. Then it drilled easily. I tapped the holes and used a modified compression tube fitting (drilled out shoulder in fitting so 1/4" tube from TC could slide right through).
It works very well.

Todd

On Mon, 2009-09-07 at 09:10 -0400, Steve Brooks wrote:

I need some advice on adding EGT problems in my stock turbo manifold.  I didn’t monitor EGT before, but now while adding the EM3, I want to add EGT.  Is there a preferred location in the manifold to drill to install the probes, and also is it best to add a weld bung, or just tap the hole in the manifold, as it is fairly thick.

 

Regards,

Steve Brooks