Show BORING GRINDING OF CYLINDER BLOCK LOCK BLOCKIS IS HERE EXPLAINED e We are frequently asked the question as to the distinction between and rebo cylinders and how one is to I know which process should be used I in inthe inthe the event It becomes necessary to true I up u worn cylinders I I I. I Engines that have have been in service for fora a considerable time are apt to develop worn cylinder r disease which manifests Itself in loss of power The reason Is that the cylinders due to the thrust side of the pistons get slightly more wear inthe inthe hithe in hi the crosswise direction tha nU nuey ey do in inthe inthe inthe the fore-and-aft fore direction This results in a s slightly shape which is the themore themore themore more pronounced the ol older olaer er the engine and hence the gases have bave a chance to leak leal past the the- worn sections If tire the wear is only a few thousandths of an inch the bore of ot the cylinder can he t trued up merely by grinding but if rhet rhe l the cylinder d 1 Is badly out of r round It is sometimes necessary to it before the grinding is done The point t is iss that dg i ivery reJo grinding cannot t be expected to make avery a avery very deep cut or correct a badly misshapen misshapen misshapen mis mis- cylinder Where a deep cut li is needed the surplus metal should be toe removed removed removed re re- re- re moved by the boring process after which a very accurate surface can be secured with the grinder Fro Pro foregoing it will be obvious s that to secure accurate results and to bring to very close limits grinding is necessary for boring will not admit of such accuracy It should further be clear that grinding will produce a much smoother surface than thin boring alone Motor alone Motor Life LiCe |