just got a JDM H22A swapped into my Accord and I am ready for the next step.....turbo. I want to be able to run up to 8 lbs. 6 lbs isn't too bad either. My concern is my compression ratio....which is 10.6. Without changing my internals, what are other ways for me to lower my compression so that I can boost safely? What is the maximum amount of boost I will be able to run? What tips do you have for me?

P.S. There is a FMAX USDM Prelude running 12lbs daily on his stock internals with his compression lowered by an rIDEAL head gasket (which I believe lower the cr from 10.0 to about 9.25 or so). Is that reasonable?

 

I would just go the head gasket route if you dont wanna go that way then its ok but sense it is a used motor im assumung i would go ahead and geta new oem gasket at least and change out the oil and water pump ive experienced some problems with a couple motor sets . The h series is a strong motor should be able to handle the amount you throw at it . Goodluck man-Pdang

 

h22a has a strong deck, changing pistons and rings + rods and you will be good to go since first thing to go on h22as are the rings..