300SD:

The only way you could get your engine to rev beyond about 4600 would be to downshift too many gears at too high a speed (as in going to second on the gearshift at 80). The electronic fuel control will shut the fuel off under power, limiting engine speed to 4600 rpm. Good thing, too, as this engine has mucho ponies -- for sure if it ran at full throttle you would blow it up -- I can't see it running out of horsepower! Anything under 5000 rpm is probably safe. I avoid very high revs for longevity -- there is more wear at high rpms.

The last time I floored the Volvo on an interstate entrance ramp and held it there, it would only generate about 4500 rpm, but that was before I got the turbo fixed.


Peter

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1972 220D ?? miles
1988 300E 200,012
1987 300D Turbo killed 9/25/07, 275,000 miles
1985 Volvo 740 GLE Turobodiesel 218,000
1972 280 SE 4.5 165, 000 - It runs!