You don't repair compression rings you replace them.
The ring gap on an 8 HP Briggs & Stratton engine typically ranges between 0.010 to 0.020 inches (0.25 to 0.51 mm) for the top compression ring. It's essential to check the manufacturer's specifications in the engine's service manual, as the exact gap can vary based on the engine model and intended application. Proper ring gap ensures effective sealing and optimal engine performance.
The end ring gap for a new ring set in a Briggs and Stratton 10 hp engine typically ranges from 0.010 to 0.020 inches for the top ring and slightly larger for the second ring. It's essential to measure the gap accurately using a feeler gauge after installing the rings in the cylinder to ensure proper sealing and engine performance. Always refer to the specific service manual for the exact specifications, as they can vary by model.
Briggs and Stratton Motor:aluminum cylinder bore compression ring end gap should be no more than .035 inches (.89mm) Oil ring end gap should be no more than .045 inches (1.14mm) Cast iron cylinder bores compression ring end gap should be no more than .030 Inches (.76mm) Oil ring should be no more than .035 inches (.89mm)
The top two rings are both compression rings and the third is the oil control ring set, Nominal is 0.010" and minimum is 0.006" with 0.014 for the oild ring set.
Very difficult without proper removal and installation tools provided by Briggs and Stratton. The old one can be removed with needle nosed pliers, by gripping as much of the bulb as possible and rocking it back and forth until it pops free. If the bulb tears out, be sure to remove the snap ring holding the base. Be more careful when installing the new one, as it can be torn easily. Put the new bulb in, and snap in the new retaining ring using two small flathead screwdrivers.
I'm not being obvious, you replace it. Where is it at or what is it doing? You either expand it or squeeze it together depending on what it is doing and located. Any snap ring sits in a groove. If the groove is towards the inside of the ring, you can usually just slide it over whatever you are working on and it will drop into place. If the groove is outside the ring, you have to compress it to get it in, or start on corner of it in the groove and work it into place with a flat screwdriver. Don't know if this helps.
The o ring style seal goes on the lower groove, the valve keeper goes in the top groove.
one ring per piston, the pistons have a groove in it where the ring fits on.
you should have three rings, top ring is the compression ring, second ring seperates the compression ring with the third ring which is the oil ring. check to see if the gaps in all three rings are staggerd if not then you are getting oil blow bye. did you seat your new valves, if not then you may also be getting oil blow bye through the small gap in between the valves and valve seats.
The stock 350 pistons have 3 ring grooves.The BOTTOM ring groove is for the oil ring assembly.
The piston ring groove serves as a seating area for piston rings within an engine's piston. Its primary function is to maintain a seal between the piston and the cylinder wall, preventing the escape of combustion gases and controlling oil consumption. Additionally, the groove allows for axial movement of the rings, accommodating thermal expansion and ensuring proper ring function during engine operation. Proper design and maintenance of the groove are essential for optimal engine performance and longevity.