the only parts you can use from the z22se are:
The bare engine block and the sump, but I would guess the bores are worn on the older z22se - so not even worth using.
The z22yh has; higher compression pistons, the rods have a bigger gudgen pin to suit the yh pistons, the yh crank has a different trigger wheel (60-2 rather than 5+2), the yh cylinder head is totally different, the yh exhaust cam sprocket is different, the yh oil pump is an upgraded item.
Just sell the z22se and buy a z22yh (y)
