Quote:
Originally Posted by Old Tele man
It's cast iron probably to keep the turbocharged block from "blowing-up" when the engine is forced ( pun intended) to produce maximum horsepower. Aluminum blocks maybe much lighter but they're also much weaker too.
...here is a link to R&T magazine article: http://www.roadandtrack.com/go/news/...gine-announced |
If they wanted to strengthen the block they could've used steel liners, cast iron liners, or composite reinforced liners. Aluminum block Subarus do just fine, MMC liner 2ZZ-GEs and K20s hold massive amounts of boost. It's cost, not strength. Cast iron block is cheap and strong, but worse.