Cummins ISL, ISC and QSL engine specs and bolt tightening torques at Barrington Diesel Club. Basic specs are open to everyone and include images, displacement, dimensions and weight, essential bolt tightening torques, the characteristics of the engine like its power and torque. Essential bolt tightening torques are the main bearing cap bolt torques, the connecting rod cap bolt torques and the cylinder head bolt torques. Among the manuals and literature we have for this engine are the parts book, spec sheets and workshop manuals in English and Manual de DiagnÃ³stico y ReparaciÃ³n Motores ISL y QSL9. We provide engine specs, bolt torques, manuals and technical data for many makes and models of diesel engines.