So a friend off mine have a yblock standing in his garasje. I checked the engine code today and it was ECZ-B. The heads was the same code. I found this web site with y codes, from what i readed both 292 and 312 could have this code. You have to take off the oil pan to look at what the main bearing is. Is it some other way to see it ? Is it a bigger chance it is a 292 ore the other way a 312 ?

Thanks Robin