BC59 In about 1970 I finished off the portable grinding era like you described,the high compression engines were just too much for a portable grind to work. Had a hand lathe that would bore babbitt rods slick as could be any size too. Took me a while to figure it out,we had a bin full of semi-finished 216 rods. Wish we had em now--however we can't live in the past forever !! LOL