Total Seal® RC3766 - 3.766" Non-Adjustable Ring Compressor

THE FACE OF THE RING – The face of any compression ring can have many characteristics that may help or hinder cylinder sealing. The profile (barrel, taper. etc) can vary in many different ways that help the ring stay seated through piston rock over. Face coatings can also make a substantial difference with cylinder sealing depending on your cylinder wall material.

THE SIDES OF THE RING – The side surfaces of the ring, that is the surfaces that seat against the piston flank itself are often overlooked but equally as important in sealing an engine. Simply, the flatter and smoother these sides are, the better they will seal against the piston and stop any blow-by from traveling around the ring land and into the crankcase.

THE END GAP – Here is the correlation the larger the end gap, the more blow-by and power reduction your engine will see. Lets examine the strokes in a four stroke engine and the importance that cylinder sealing means to each.

INTAKE – On any naturally aspirated engine, the better the rings are sealed inside the cylinder and against the piston, the more intake charge (air and fuel) will fill the combustion chamber. Ring seal is the only thing in a normally aspirated engine that draws air / fuel into the cylinder.

COMPRESSION – The better the engine is sealed on the compression stroke, the higher the percentage of intake charge that previously filled the cylinder will be utilized. Ring seal is the only thing preventing the charge from leaking past the piston and into the crankcase.

POWER – During this explosive event, the more explosion the rings keep above the piston, the higher the force will be exerted downward on the piston, resulting in more torque and horsepower.

EXHAUST – The more efficiently the cylinder disposes of exhaust, the more that event in overlap, will help prime the intake stroke for cylinder filling.