CARBIDE GROOVE CLEANER I needed a narrow grooving tool to quickly clean carbon from piston ring grooves, for an engine restoration project. All the usual grooving tools were too wide, however a carbide tipped circular saw blade was a perfect fit. Using an angle...

FILL IT TO THE TOP If you have a piston with a dome volume, you're unsure of, here's an easy way to check. Wrap a single layer of thick packing tape around the head land, taller than the dome. It will maintain the full round shape if you're careful. Fill it to the tip...

IT’S HIP TO BE SQUARE It's tough to end gap rings in a canted deck engine such as a 409 Chevy. Turn a scrap piece of cylinder sleeve to about .003’ smaller than the bore. Make sure it’s long enough. Use that and it will allow you to push the rings down the bore...

SUPPORT RAIL INSTALL When using pistons that require oil ring support rails, we use a .008” feeler gauge between the piston and the rail as we slide the rail into place. This way it does not scratch the piston or catch as its going into place. Adam Cofer Salina Engine...

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...

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...