Black22
Jun 10 2012, 07:27 PM
I say 1.7/1.8.
I'd like to see the pipes that lead up to the flange to make sure though.
KaptKaos
Jun 11 2012, 01:38 PM
The pipes that lead to the flange have a rise to them. The angle is ~40 degrees +/- upward. I believe that makes them 1.7/1.8.
What threw me was the rounded nature of the flanges on the heat exchangers and that the muffler has squared off edges in the shape of a trapezoid.