Re: OMC LU ,identify year and Hp

Home › Forum › Ask A Member › OMC LU ,identify year and Hp › Re: OMC LU ,identify year and Hp

January 29, 2017 at 10:05 pm #52056
frankr
Participant

    Upper D/S splines on your ’81 are different than the older 22 cubic inch 25’s. I don’t know about the lower end. The o-ring for the upper end is in the crankshaft rather than around the drive shaft. Like you say, mind numbing.