i bought a bare d16z6 block and a built stock y8 head for $200 with the intention of building the motor with my son for boost. due to finances cuz my son also started travel baseball again we have decided to go high comp for this build. i have spent numerous hours researching on this site and many others before starting this thread and i have some questions i couldnt find definitive answers about.

1) with the z6/y8 combo the p29 and pg6 pistons both will give the 11.5 - 12.0 comp rating im looking for according to zeal comp calculator. but ive found stories about both pistons wont work with the y8 head. Which will work with a stock head/ cam vs aftermarket cams

1a) with the above info im also looking at the crower stage 2 na cam for the y8 #63442y. if the above pistons wont work with the stock cam and valves im assuming they wont work with a more aggressive cam? (yes ive heard of claying the engine but keep in mind my son is 10 and has the attention span of a gold fish unless its baseball related and i really dont want to spend money on parts combo that will not work together.

2) if the pistons in 1 will work with the y8 head setup will they fit with the stock z6 rods? mostly concerned about wrist pin size as i havent been able to find any decent info on that yet.

i probably have more questions but thats all i can think of for now.
any help is appreciated as we are looking to start ordering parts relatively soon.

 

What else you got ?

 

Thank you for the help i appreciate it!

So the nippon p29 is the "safer" option?

would there be any real advantage or hp/tq gain to boring the block out to 76mm? Im not sure anyone around here does that kind of engine work.
I know that i have to run about 4 degrees of cam timing with the y8 to z6 set up from researching it. is that considered significant cam timing?
Is the crower cam a good choice for an NA motor?

I havent done very much research on ecu's and chipping ECU's will that be necessary as im going from a non vtec car to a vtec setup?
i watched a video that showed how to run the wire from the vtec solenoid to the ecu and said that was all that was needed. I know their will be some tuning required with the new motor what would be your recommendation for ecu's to use and are they easy to tune like i could do it my self with out blowing the thing up.
Can i start the motor with the stock ecu?

Again i appreciate your help greatly

 

You will need a VTEC OBD-1 ECU and a Hondata s300. I suggest you find a competent tuner and have the engine tuned... doing it yourself is risky since you have no real experience doing it.