The 4g64 Hype

[Goat Blower]

There's a ton of info out on the 2.4's, you're best off to read up on the NABR archives, nobody wants to write it all out again. Here's the basics though:

20% more displacement, that's always good. The rod ratio is worse, but they've been tested to at least 8500 rpms with no problems. They won't rev as high as a comparable 2.0 liter, but they don't necessarily have to because of the extra power and torque at lower rpms. The 6-bolt variants use almost all stock Mitsu parts so the engineering is already done. Pistons and rods are readily available and no clearancing of the block is needed. And best of all, they allow you to use a larger turbo which decreases exhaust backpressure and ultimately makes a more efficient engine with a lot of power.