Is the EJ20 block the same on both the STI and the WRX Turbo?
Could you fit STI heads to the WRX block?

Ta

 

Yes mate the blocks are identical. I used to have Version 5 Jap STI heads on a UK 2.0L open deck block.

Now I have the same jap sti heads on a 2.5 Semi closed deck block.

After christmas those heads will probably end up on a 2.35 closed deck block.

Daz

 

Cheers for the reply mate, big help.

 

If the blocks are identical what makes the STI more powerful than the WRX?
Just curious cause i don't know much about these engines...

 

They have forged pistons so are stronger.

The extra power comes from different heads and cams and a different turbo plus some other bits and pieces.

The block cases of the 2.0L sti are the same in every way to that of the WRX.

Daz