with a cracked manifold until I get the new one...... I need professional advice please.

 

It all depends on which manifold, and where the crack is. Intake maifold, no. Exhaust manifold, pre- turbo, maybe. Exhaust manifold, post-turbo, yes.

 

It has two large cracks on the exhaust manifold between the block and the turbo.......

 

Look to see what the HOT gases would be pointing at and melting.

My International toasted the wiring loom to the starter once. Did you know a starter will act as generator when wired (in)correctly?

My MF cracked on the bottom from the center were the turbo mounts all the way up top. Lucky there was nothing in the way. After its fixed you should bet better fuel mileage I got +1

Loren