Part: Honda CB450 / CL450 Scrambler / CB500T Piston Rings (Standard)
Why You Need This: The Honda CB450 / CL450 Scrambler / CB500T engines are pretty stout and we have seen some bikes with a lot of miles on them that keep on trucking. However engines need to be freshened up as oil leaks occur and compression dwindles, the good news is we have seen many Honda CB450 / CL450 Scrambler / CB500T engines do not need the cylinders bored as they are within service limits for a re-ring. If you engine checks within the service limits (page 32 in the Honda Factory Service Manual), then a hone and install a fresh set of piston rings will get you back on the road. Our piston ring kits are designed to fit the factory Honda pistons in standard size (70 mm) used in the Honda CB450 / CL450 Scrambler / CB500T engines. This modern piston ring set includes an easy to install three piece oil ring (no more cumbersome 1 piece ring) along with a matching pair of iron compression rings designed to seat better in a used cylinder bore. Piston ring sets are sold individually, one set per piston, you will need two sets per engine. We highly suggest adding the wrist pin end clips and a fresh overhaul gasket kit to finish the rebuild off correctly.
Installation Tip: Cylinders must be measured and checked for taper, roundness and top ridge, you will need a micrometer and either the telescoping gauges or dial bore gauge to complete this. If everything measures out then the cylinders must be cleaned up with a cylinder hone to accept new rings. We always recommend to double check machine work. Top and second rings are identical and installed with the "top" marking or beveled edge of the rings facing up towards the crown of the piston. Oil ring is installed with the wavy ring first, then sandwiched with the thin rails top and bottom. Make sure to check the piston ring end gap on the compression rings prior to installation. Minimum gap is 0.012" (.3 mm) and maxim gap is 0.030" (.5 mm). Rotate the open ends of all the rings 180 deg apart from one another once on the piston. Oil rings and cylinders well prior to installation.