Special Features:

7counterbores must produce 0.001-0.003 interference fit w/inserts (shrink fit); counterbores for inserts must be concentric w/id of valve guides w/i 0.005 t.I.R.; intake counterbore shoulder surface must be square w/id of valve guide w/i 0.02 t.I.R.;

Properties:

An item designed to inclose the cylinder bore(s) of an engine block to form a combustion chamber(s). It may have liquid cooling passage(s) and/or air cooling fin(s) and may include valve(s), valve guide(s), rocker arm(s), injector tube(s), and the like. It is a component part of an engine, diesel. See also cylinder head, gasoline engine.