Originally Posted by ballitch
I bet it uses the same or very similar cams to the other phase II sohc engines as well. Now I am having thoughts of swapping forged piston meant for the wrx 2.0L into these engines and boosting the crap out of them.
Is the compression ratio at 10:1 like the 251/3 as well? Time for interweb search... I do find the 10 less HP figured slightly weird, how can you drop 20% displacement and lose only 10 hp...?
I believe they have only 10 less hp because they rev higher in stock form. I think the redline is north of 7k for the NA EJ20. If you swapped one of these it might be worthwhile to find a way to bump the redline.