Ok, so, I've decided I'm going to build my y4 a little bit.
I know it's not worth it, I know I have another car to build. That needs lots of money to progress, this'll be cheap in the short run. blah blah.

Anyway, planning on chucking some higher comp pistons in (y8, or nippon p29. which'd bump it up to like 11:1~)
Only question I have is; if I get pistons that are high comp ones to suit a 16v head... Will my 8v head crack the sads? By which I mean, how likely is it that the valves would hit the bit between the two valve grind bits, and bend?

The other plan is to port and polish the head, and grind the cam. Would chucking y8 springs and retainers in (did hear they are a bit strongker) be worth it? Or would the y4 ones do the job as well?

Would upgrade rods to zc or y8 rods if need be. Depends how pansy the y4 ones are. Although, it seems the y4 ones handle boost pretty well, so in theory they should be fine.

Cpu would just be a hondata slapped on. Should be easy enough.

Intake maybe y8.

Ideas?