Quote:
Originally Posted by Christ
Diesel's don't overrev on factory settings because they literally run out of fuel.
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Ever look at an old Benz diesel tach? There is no redline.
I read somewhere that the reason Mercedes didn't bother with painting one on there was that their engine simply could not rev high enough to do itself any damage. You could put it in neutral, drop a brick on the accelerator and walk away. Diesel plain and simply can't burn fast enough to get it past a certain rev point. I think it was somewhere between 4-5K revs.
I have seen other diesels that did have redlines. I don't know if these engines actually were capable of spinning that fast or if the manufacturer just decided that all tachs should have a redline.