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Yeah, peak cylinder pressure can be a problem. If you swap cams, put on a viscous (oil) crank damper, change your injection timing curve, and run the engine to a higher rpm, you can get 3x the power out of some diesel engines with little or no bottom-end modification. They may smoke a little though, and fuel economy goes down considerably. 180-190 bar seems to be about as high as most people like to go on peak cylinder pressure. You can run 75psi (5 bar) boost w/o exceeding that PCP if you watch your fueling curve and drop your compression ratio. Cold starting begins to be a problem with a low CR...
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Come on fhqwhgads. I see you jockin' me. Tryin' to play like... you know me...
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