Yes, k24a2 has better internals.. "Beefier" internals and has individual oil squirters for each cylinder.. That's just to name a few things. I don't know them all.. But, if you're going NA and not building the engine.. I'd go with the TSX k24a2. If you're going boost (which I see that you are) I would get the CR-V k24a1.
The reason the CR-V k24a1 motor is better for boost is because it's lower compression.
k24a2 compression ratio is 10.5:1
k24a1 compression ratio is 9.6:1
Built NA/All motor cars will have a very high compression ratio
Built motors for boost will have a relatively low compression ratio
Those are the basics.
Bookmarks