S&S Cycle 114 Big Bore Kit for Victory Motorcycles - Manual (Page 4)

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3- Wash pistons in mineral spirits to clean oil from the pistons and then with hot soapy water and wash rag. Rinse pistons with hot water and blow
dry with compressed air.
CHECKING AND SETTING RING END GAPS
Notes:
Important!
•
The gap of the second ring should be larger than the top ring; this will help keep the top ring seated for improved performance.
Each piston ring must be fit to the particular cylinder in which they will be installed.
•
Oil rails can be installed without adjusting the end gap. The minimum gap should be 0.015”
•
See diagram below for the order of piston rings assembled on the piston.
•
Note: The top piston ring has a shiny chrome color and has a letter “N” that designates the top of the ring. The second ring has a dull black finish and has
a letter “N” that designates the top of the ring. In both cases the letter “N” should face upwards toward the top of the piston. The oil rails and expanders
can be installed in either direction.
1- Check the ring end gap by placing the ring into the cylinder. Use a piston or caliper to ensure that the ring is placed squarely in the bore as
illustrated in Picture 2.
SUGGESTED RING END GAPS
Ring
Ring Gap Tolerance (inches)
Target Gap
Min Max
Top 0.013 0.023 0.018
2nd 0.017 0.027 0.022
Oil ring rails 0.015 0.050 0.015 to 0.050
Picture 2