Review on GOOFIT 57 4Mm Cylinder Piston Stroke by Cornelius Mosley

This set does not come with instructions or instructions, just parts. In my opinion, the rings are too big for the play in the cylinder. I measured and they were about 0.015 inside the cylinder gap (check before putting them on the piston). As a result, the engine smokes a little after a few minutes of operation. Other websites have stated that the rings should have no more than 0.008 inch play in the cylinder. And yes, I made sure to change the position of the gap on different rings. I even disassembled it and redid the top end to make sure the gaps faced each other. To sum it up it works and my engine runs fine but I have concerns about quality and performance.