Cylinder Honing Torque Plate Mazdaspeed Protege

Head-bolt torque can dramatically distort cylinders and cylinders can not be bored or honed accurately if cylinder dimensions change so significantly after assembly. Rings won’t seal well and scuffing is likely to occur if the engine overheats. Use of BHJ Honing Plates rectifies all of these problems, leading to more consistent tolerances, better sealing and more power. The R Model Honing Plate is the established standard for duplicating cylinder bore distortion and is a must for any high performance engine application. Used by top machine shops, racing teams and racers alike, the R Model is acknowledged to be the finest, most accurate honing plate on the market today. The R Model incorporates all of the standard features listed above, plus is specially machined, and in most cases, supplied with D.O.M. steel Spacers and Washers, to duplicate cylinder head height and facilitate the use of the OEM-length head bolts or aftermarket studs during the honing operation. Optional machining is also available for Hot-Hone applications. In order to maintain the closest possible block distortion, it is necessary to use the same type of cylinder head gasket, as well as the same type of bolt or stud set that will be used during final engine assembly during the honing operation when using the R Model Honing Plate. Some engines require that both cylinder banks be torqued to better simulate final assembly conditions during honing. Additionally, industry tradition dictates that the Honing Plate should be of a similar material as the heads being used in final assembly,thus a cast iron Honing Plate is preferred when using cast iron heads in final assembly and an aluminum Plate used when aluminum heads will be installed.