get and h22. i did my research and the f20b's internals are different and not available in the us. go with the h22 or h23a.

i chose the h22 for my accord.

the f20b revs high and makes a bit more power.

the h23a makes torque.

the h22 is right in the middle. best or both worlds. the h23 is a bit different also. everyhing is bigger.

my h22 is the NON SH version, the OBD1 version if you will. for turbo, you could go with the usdm for the lower compression factor. its up too you, whether your going too do a complete motor build, or turbo stock.

the euro r, sh h22, and sir obd1 h22 heads are exactly the same. the internals are different thats all. the euro r makes more power cause the intake manifold ( and i think throttle body) are portmatched from the factory, has more aggressive cames and higher comp pistons.

for turbo, id go with the OBD1 h22 block casue its closed deck, unlike the sh and euro r. they all have FRM sleeves so youll have too either use the Mahle gold series pstons, or sleeve.


all up too you bruh.