Piston Ring Sets Stock - 83mm,1.5 x 1.5 4mm

Rings on the pistons are there to eliminate "blow-by". To see if your cylinders or rings are worn out, take a top ring and place it into the cylinder about an inch down from the top. Using a piston with no rings, push the ring down making sure it is sitting flat in the cylinder. With the ring in the cylinder, use a feeler gauge to measure the ring gap. If it is over .030", either the ring or the cylinder is worn out. If you feel a ridge on the top of the cylinder, then it's a bad cylinder and time for a new set of pistons and cylinders. We prefer using cast rings instead of chrome rings. Chrome rings never seem to seat. This causes a lot of "blow-by". Note: Use ring spreader pliers to put the rings on. When putting the cylinders on, make sure none of the ring gaps are lined up.