Question about an OMC 22ci 25hp I'm looking into adding the reed plate and intake from a 31.8 OMC. The bolt pattern fits so it would seem no problem but there is. Why would there be a bypass on the crank case side of the reed plate? Apparently it isn't on all of them but is on the one I'm working on. Might fill it as the 31.8 reed plate leaves it exposed to outside air. Or, would it be better to fill in a reed plate to cover it like the 22ci one does? Would this bypass be drawing crankcase compression from a decompressing cylinder or forcing compression into a compressing cylinder? Or, just balancing crank case compression? Hell if I know lol.