to answer few questions:
I rebuild the engine because i had ticking noise from the engine and low oil pressure.
It turned out the piston rod bearings on 3 cylinders were damaged causing the noise and the low oil pressure.
Here are two videos with the noise and after rebuild:
1. Before the rebuild where ticking exists due to the worn bearings.
2. After rebuild where the engine is nice and smooth:
Can you notice the difference?
I also had the heat risers welded in shut position so no need to worry. Check my previous posts for pictures.
I resolved the leak with the curil-t sealant after removing the studs and installing again. I think studs 4.5.6 from the front go into the water jacket for sure. the last two don't.
I also had oil leak from the fuel pump connection to the block and found that the resin gasket that was there all along is not the correct. Ordered correct and all is good now.
If you have a coolant leak and whoosh sound after running the engine I would start with the manifold studs and move along. If the studs are ok, then you are just few steps from removing the head and changing the head gasket.
I had Adler recommend to change gasket in my case but keep in mind, everything is new on my engine, fresh rebuild. not to list but all gaskets, hoses, clamps, chain, tensioners, valve guides, blah blah blah is new.
I've put over 200 kms on the car so far and the engine runs good and strong. Will continue to monitor for further leaks.