Recent content by pistonring

Hi Gordon- I am not a good teacher but will try to explain how a compression ring works. If I get confusing please ask me for clarification. When a piston is moving towards the cylinder head it pushes the ring(s) up the cylinder. The air and fuel mixture is squeezed into a smaller volume...

Fit and finish of the sides of the ring groove will make the seal to get compression. The seal of the ring to the bottom crankcase side of the groove seals the compression. The seal to the top side makes vacuum or suction for the intake stroke. Normally 0.0015" side clearance is built into a...