I want to mill the head of my h22a1 USDM setup. What is the max you can mill the head with stock pistons and essentially stock head with adjustable cam gears? Was thinking 30 to 35 thousandths would be within reason, but i wanted to know if that is reasonablly reliable given timing on ignition and cam gears is brought back to 0. Any thoughts?

 

On stock bottom end, I wouldn't go more than .0035"

 

Anyone with who has milled their h22 head wanna commment on the amount they took off, or what they feel is a safe amount?

 

This interests me as well, I would like to up the comp of my JDM h22a..

 

up up.

 

yes indeed, i am curious also!
I may be doing this when my motor gets here!!