Thanks all of you for the info.I didn't know the MB diesels are set up tighter then a typical Amarican gas engine is,and would have thought I should be setting it up loose like a typical non MB diesel.You've given me the kind of info I needed to know.I don't have either engine apart.They both run very well but burn alot of oil,the spare engine burns the most.I found out here that the early 220D's are prone to premature wear because of bad,soft castings.Low nickle content in the late 200's and early 220's is probably the reason for the soft castings I'm assuming.My last question about these engines being boared is this.Does anyone know where I can find out the specs on the casting thickness of the cylinders?Some department at MB or something?My searches haven't turned up any info on the castings.Thanks again for all you'r help.