Hi, I am a professional certified mechanic, with an engineering background, and 35+ years experience. I will do my best to assist you. Also keep in mind I don't know if you are a pro or a novice so we may have to fine tune the answer. Feel free to add any additional info you feel is needed as we go on. Always keep in mind that I am here to help you with any questions.
I think you missed a major point, and that is pounds per square inch, the bolt is nowhere near one square inch, so it wont have 150000 pounds of tensile strength, that one square inch has. Calculate PI x the bolt radius squared, and multiply it times the tensile strength, to get the actual strength of the bolt, It needs to either be done in inches, or all in metric, the two sets of data dint interchange in an engineering type formula like this. The bolts tensile strength also will vary slightly with the temperature of the bolt. The pressure the injector exerts on the bolts wont be the PSI generated in the cylinder either. It will be the same PI x the injectors combustion chamber diameter's radius squared, and multiply it times the maximum combustion chamber pressure. It is sort of like a mini engineering project. BotXXXXX XXXXXne is Sprinters did have excessive problems with the injector bolt failure, and leaking injectors, you can document this with an internet search. If you have any more questions, as always, I am here to help. Good luck with it, have a great day, and Thanks for using Just Answer.
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