PHILIP8N
Veteran Member
3000 rpm is not fast for a diesel engine that only has a 2.90" stroke
Think mean piston speed. Philip.Engine Break-In RPM
- Thread starter robertm
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3000 rpm is not fast for a diesel engine that only has a 2.90" stroke
Think mean piston speed. Philip.
mjw357
Platinum Member
Run easy till it's warmed up, then use it.
sandyc
Veteran Member
If you have a tractor that has to regen that will mean that it has to go wot in order to maintain the heat needed to burn the crud out of the filter. If you do a parked regen the computer runs the RPm's at wot in violation of the manuals instructions.
David_Kb7uns
Veteran Member
3000 rpm is not fast for a diesel engine that only has a 2.90" stroke
Some versions are governed at 3600RPM, John Deere has made an issue of the faster speeds in marketing their tractors against Kubota.
David
PHILIP8N
Veteran Member
OK, still, 3000 rpm is not fast for a diesel engine that only has a stoke of 2.90", think mean piston speed. You said it, not me
Kubota Super Mini series engines are rated for continuous duty at 3600 rpm, I would think mainly for gen-set applications. Anytime you can run an engine at a slower speed within its operating range it will generally last longer, but you also get less horsepower, which means larger engine (more cost) or a turbo charger (more cost and higher cylinder pressures) to do the same job. I bought a Kubota over a John Deere because I wanted a larger naturally aspirated 4 cylinder engine over a 3 cylinder turbo charged engine, even though my Kubota's rated horsepower was 100 rpm higher than the Deere. I still think I won Philip.CADplans
Elite Member
The JD dealer in Richmond VA had a dyno. This was in the 1970's,,
For any machine that they sold that they knew was to be used for light duty,,, they would put it on the dyno @ 80% of max HP rating for 8 hours.
There was a tractor out back screaming many times when we went for parts.
I asked about the procedure.
The service manager told me they had too many old guys buy a 70HP tractor, tale it home, pull a hay rake for the first week, then have engine problems.
He said this was almost a sure fire cure for those early engine problems.
My BIL purchased many dozens of new tractors. When new, ALL the tractors were parked until they could be put in the field doing heavy work.
He had great success with tractors, but, he was a fanatic about clean fuel, and scheduled oil changes.
For any machine that they sold that they knew was to be used for light duty,,, they would put it on the dyno @ 80% of max HP rating for 8 hours.
There was a tractor out back screaming many times when we went for parts.
I asked about the procedure.
The service manager told me they had too many old guys buy a 70HP tractor, tale it home, pull a hay rake for the first week, then have engine problems.
He said this was almost a sure fire cure for those early engine problems.
My BIL purchased many dozens of new tractors. When new, ALL the tractors were parked until they could be put in the field doing heavy work.
He had great success with tractors, but, he was a fanatic about clean fuel, and scheduled oil changes.