Quote Originally Posted by EJ22D
Quote Originally Posted by Outbackid
For what it's worth, I successfully mated a JDM EJ25D block to USDM EJ251 Heads. You have to use EJ25D gaskets.
The 251 crank gear is all that is required to make it work. You probably had to change the black coolant pipe & dipstick too.
What do you mean by crank gear exactly?