Touring piston oil ring "coiled wire"

[Bob Culver]

As above it is essential the ring can push down flush with the piston face. Seems like cannot with the spring hence advice to discard. Pre gapped rings were popular with the Trade and eliminated one more source of botched workmanship. But irksome for those seeking minimum gaps. If rough finished generous gaps become even bigger with bed in. However engines run merrily with quite large gaps.