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Safe continuous RPM ranges when driving Cummins turbo diesel 12v


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When I'm driving my truck (1995 3500 Cummins turbo diesel) on a road trip I'm usually at about 2500 - ...


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Old 01-19-2016, 10:11 PM   #1 (permalink)
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Default Safe continuous RPM ranges when driving Cummins turbo diesel 12v
When I'm driving my truck (1995 3500 Cummins turbo diesel) on a road trip I'm usually at about 2500 - 2700 RPMs -while the engine red lines at 3000- (I have 4.10 gears...so going 70-75MPH puts me at that RPM range)... Is this safe for the motor or is that consistent RPM range too high? I've never had a problem -knock on wood- but just wanna make sure I'm not sending my CTD to an early grave. Thanks in Advance.


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Old 01-20-2016, 12:07 PM   #2 (permalink)
 
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While mine is a 24V and a 6.7, I like to keep my RPM at or below 2K on the highway while cruising. 1700-1800 RPM seems to be the happy spot for fuel economy. 2K for me is about 75mph with 33" tires and 3.73 gearing. I couldn't imagine running at 2500-2700 RPM for any extended amount of time.


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Old 02-08-2016, 07:52 PM   #3 (permalink)
 
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i don't think you really got to worry about much. that is why they got governors. i also bet they leave lots of safe room in there. your engine will not blow up at 3000rpm.


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