Currently building a 2.5 block because I threw a rod bearing in my OEM block due to ringland failure. Was going to go with an OEM EJ25 case with forged goodies and be stage 1.
However, under guidance from reliable sources; supposedly the current 704 casting has been notoriously cracking cylinder walls like a boss. Even under optimal conditions and build specs the blocks have been busting walls and was brought to my attention by 3-4 instances. One of which was build, installed, and then cracked on the dyno.
Has anyone heard or experienced this phenomenon? Debating either proceeding as planned or going with a cosworth short block since the price difference is like +/- 1500. But still :/
What say you Nasioc? Discuss...