WHICH WAY IS UP When you are not sure which way the 2nd rings go in or cannot figure out the markings, remember, they are oil scrapers and have a tapered face. I hold one down to see which way it leans vs. a square. The side that leans towards the square is the top...

SAVE THAT SPECIAL PISTON When I really need to save a piston that does not have a good way to press it off without wrecking the sides, I mill a slot along the exposed lower side of the pin bore and it will release the pin fit. Then you can just tap the pin out. Randy...

HIGH ZINC OIL FOR MORE THAN JUST CAMSHAFTS With more engine builds moving away from flat tappet cams to avoid the “oil & zinc” issue, another engine component frequently gets overlooked, the piston ring. While we all know flat tappet cams need to be broken in, piston...

PISTON FIXTURE A simple way to chuck pistons into the lathe is to make a draw rod assembly that goes through the head stock of the lathe. I made a bushing to locate it and give the draw nut a place to seat. Sometimes you may have to make a ring adapter for the...

RING SQUARING When gapping piston rings, an easy and often used way to square them in the bore is to invert a flattop piston and use it to push the rings down to the desired depth. Another good way on large bore engines is to use a tapered ring compressor of the...

PISTON PIN POLISHING I found it easy to polish piston pins in the rod hone. I use a small mandrel to hold them. Randy Torvinen Torvinen's Machine Menahga, MN October, 2019