Yep it's a scott bonnar motor. Pull most of it apart today and aside for the old oil and bad fuel the motor looks to be in good nick! It has the crosshatch honing marks in the bore not sure if it's from factory or if the motor had a rebuild in it's time. Pictures attached. When I rebuild it should I give it a light hone or leave bore as is?
Nice nick QSR. If that bore is as good as it looks, I would measure up, check ring gap then on a good result, deglaze with a ball hone. If the rings are within gap spec & tension, I would lightly dress the rings on a surface plate/glass with finest wet n dry to remove any edge - or replace. Have you plasti-gauged the big end bearing?
I forgot to put the 0 infront of the number, was wondering why it didn't find anything initially.
