What is honing of cylinder liners?

The honing equipment used has been manufactured by "Chris Marine". The head of the honing device consists of four synchronized stones. For the initial honing diamond stones are used to break up the hardened surface in the scuffed areas.

For the main honing very coarse and hard stones are used to produce a very desirable rough surface all over the liner The advantage, especially for the 2-stroke engines, is possibility to save the liner after a seizure, scuffing or blow-by or even to eliminate the ovality of the liner. Another advantage is, that it is possible to machine a rough linerwall to obtain a well oiled surface.

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