Originally Posted by atomicfire
whoa, cool engine. I had no idea these existed. Is it an aluminum deck guard pressed in, or is it sleeved? First time i've seen this, so I don't know.
It's a billet aluminum insert from what I understand and it retains the stock sleeves. I didn't know much about them until I ran across them while researching the new motor. The info that I posted after the pictures of my motor is about as much as I know about it.
As for the rest of the motor, it's a hybrid motor done right. No tiny 2.0L combustion chambers on a 2.5L short block here. They have been worked by hand to match the chambers of the larger STI heads.