Home › Forum › Ask A Member › Early Johnson alternate firing motors › Re: Early Johnson alternate firing motors
March 9, 2017 at 1:38 am
#54031
PM T2’a comments were the best to be considered. Early (A/K50’s) only had the center of the crankcase bored as a center maing bearing and it was aluminum. Any wobble of the crank would wear the center quickly. Later on they went to a bronze insert which did well. I had a K that someone had made a bronze insert for and had "pinned" it in place with 1/4 20 brass machine screws from the outside. It wasn’t pretty and it took a lot of work,—but it worked!