Re: '36 221 - rebuildable??
Welcome . I’ve got 2 late 36 21 stud engines with SPH stamped on the deck , both have insert bearings. I’ve tried to determine the SHP stamping but have 2 suggestions from others , one was steel pistons and sleeves and the other I forgot . Oh well old age .
That motor looks better than the two I cleaned up . Id check to see if the pistons are steel as they use different rings , if your intent was to rering and get it running .
Good luck .
Gary
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