Scenario as indicated by the VmsPC system:
Manifold pressure before manifold cracked = 23 PSI.
Manifold pressure after manifold cracked = 19 PSI.
As the manifold cracked about 3/4 around its circumference and the Turbo was fully supported, I tried a fix from the “Old days”.
I cleaned the manifold around the crack and applied a super high heat manifold crack repair compound costing less than $12.00 (Auto Zone). After the material “cured”, I tightly wrapped the repaired area with high temperature wire and then followed with tightly wrapped “Inferno Wrap”.
All noise was gone (which can be determined by closing the Pac Brake at high idle).
Manifold pressure returned to 23 PSI under full load.
I didn’t have to worry about breaking a stud off in the head and got an almost free ride on the “Fix”. It worked for me.
Bob (Squidly Down Under) & Peg - 2013 Ford Focus pushing a 2011 Phoenix Cruiser 2552S
"In God we trust" to preserve our country and bring our Troops safely home.
Carry on, regardless..................