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Ring gap on a 16A

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Ring gap on a 16A

Post  lushey1 on Wed Mar 21, 2018 4:21 am

Currently working on a Villiers 16A.With a ring in the bore,the gap is .047.Seems excessive but I have no reference.If so, should I go for a rebore, new piston and rings?

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ring gap

Post  piston 197 on Wed Mar 21, 2018 6:51 am

The recommended is .003" per inch of bore ( MINIMUM), but with a two stroke this may also have to include the peg, so for instance if your piston has the slash cut rings with a diagonal brass peg you will have to add the width of the peg, if it is the square peg which is only half of the ring width you can ignore it and just go by the ring end gap.
JH
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