Serious talk. How do you fix that?
The prevailing theory right now is the mustang gasket that was used has two coolant pass through holes that passes between the bore ridges on each shared cylinder wall.
The mustang head has appropriate passages so coolant flows. However the RS head is missing one of those passages. So coolant enters the area shared between the cylinders then stagnates there and super heats till it turns into steam. The repeated process destroys the gasket elastomer there. And might be the cause of warping.
Cylinders 2 and 3 where it warped on my head is closest to the coolant passages for the cast in turbo header. So things are hotter there.
Another theory is that the same exhaust coolant jacket located near 2&3 is boiling the coolant there. The mustang had a steam pipe located there and allows air bubbles to escape.
The RS head lacks the steam pipe. So it’s thought that the steam bubbles gather there and can’t escape. Causing a hot spot to form which eventually warps the head and causes gasket failure.
I’m actually for the first theory. This is because the gaskets on Thea cars are blowing between ALL of the cylinders. The Siamesed portions of my head gasket were devoid of any elastomer between all of the cylinders.
It’s my hope that he revised gasket that eliminates the passage and adds a tone more elastomer fixes it permanently.
