neilfrancis Posted June 4, 2019 Report Share Posted June 4, 2019 Hi. Can anyone advise on the ring gap on a 280cc climber. Thanks Quote Link to comment Share on other sites More sharing options...
rcgods Posted June 4, 2019 Report Share Posted June 4, 2019 I'm sure my old man used to quote so many thou per inch of bore. Had a quick google and turned up similar on Wisecos website Quote Once the piston ring is located and squared up, measure the end gap using the feeler gage. A rule of thumb for ring end gap measurement is to use the bore size in inches x .005”. In the example here, a KTM150, the bore is 56mm (56 divided by 25.4 = 2.2047”). If you multiply 2.2047” x .005”, the result is .011”. This would be the minimum installed ring end gap. A typical high measurement for the piston ring end gap would be the bore in inches x .007” (2.2047 x .007” = .015”). These calculations are a general guideline, and your OEM service manual will also provide further detail. If anyone has a manual it might specify a certain value but the above would be a good starting point I would say. Quote Link to comment Share on other sites More sharing options...
neilfrancis Posted June 4, 2019 Author Report Share Posted June 4, 2019 Bore is 76 mm so Im getting a ring gap of 14 thou. Sounds about right. Thanks Quote Link to comment Share on other sites More sharing options...
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