When you say the "engine was designed for it", that was not for longevity, economy, or performance, (longevity being my ultimate goal). It was to pass emissions laws.
Kubota engineers didn't say, "Well we can make it better by adding a EGR", no they said "This will work with minimal negative side effects".
I am not a farmer using my tractor 40-70 hours a week. My 08 M5040 has 300hours on it. This extremely short use cycle is NOT what Kubota had in mind for the emissions applications nor was it what the lawmakers intended to hurt with emissions laws.
Some of us were around before all the emissions equipment was added to engines and you just have to listen to some old time mechanics (not old timers) about how engines work best and longest.
It is my theory that the EGR was to reduce cylinder temperatures for NOX reduction and not that the engine was so high performance that without it the pistons will melt.
And just for people that don't understand, an EGR is like putting a hose from your exhaust pipe into your engines intake, after the air filter (unfiltered!).
Also I attached a pic of my M5040, look at the loader arm where the exhaust sometimes (when loader arm is at intersecting height) passes by. It is all stained black. This is what is going into your engine!
Kubota engineers didn't say, "Well we can make it better by adding a EGR", no they said "This will work with minimal negative side effects".
I am not a farmer using my tractor 40-70 hours a week. My 08 M5040 has 300hours on it. This extremely short use cycle is NOT what Kubota had in mind for the emissions applications nor was it what the lawmakers intended to hurt with emissions laws.
Some of us were around before all the emissions equipment was added to engines and you just have to listen to some old time mechanics (not old timers) about how engines work best and longest.
It is my theory that the EGR was to reduce cylinder temperatures for NOX reduction and not that the engine was so high performance that without it the pistons will melt.
And just for people that don't understand, an EGR is like putting a hose from your exhaust pipe into your engines intake, after the air filter (unfiltered!).
Also I attached a pic of my M5040, look at the loader arm where the exhaust sometimes (when loader arm is at intersecting height) passes by. It is all stained black. This is what is going into your engine!
