piston ring tech

File-to-fit piston rings are common today. Typically, they begin with a ring set that has the top (and often the second) ring manufactured with a diameter 0.005 inch larger than […]

Proper piston ring gap is a delicate balance. Too much gap and compression gases and heat will blow by, causing loss of power and torque. Too little gap and the […]

When installing pistons, the first step is to wipe the cylinder bores with a clean, lint-free towel, and apply a small amount of conventional (non-synthetic) oil to the walls. It’s […]

I’ve heard that late model engines now run much thinner rings than the older production engines. Are these thinner rings just there to improve fuel mileage or is there a […]