Whats up guys and gals. I just got ahold of a H22A2 i've been lookin around on fourms and sites for some info. So here it is what is the biggest difference between the h22a, h22a1, h22a2, h22a4. I know the H22a is a JDM only motor with 50mm mains. I'm not a noob to engines but just now getting into honda's.

 

This info is readily available on Google. Try Wikipedia.

 

some are open some are closed deck, but the thing they all have in common is all of their specs are on google

 

X2