[Vesper Martini]

Originally Posted by jpd80

The 2.3 EBs have a big issue with cracking blocks when you turn up the boost,
it's round the back on the Exhaust side of the block, the lower head bolt cavities can and do crack through....LINK

Also, Why EcoBoost Mustang/Focus RS Head Gaskets Fail When Making High Horsepower
Spoiler: It's all to do with exhaust reversion with smaller than optimal exhaust turbine housing.

Thought that was a Focus only issue that's been resolved now.
http://www.thedrive.com/sheetmetal/1...een-discovered