BHD
Veteran Member
John Deere use the 404 engine in a lot of different applications, and there were internal differences between the turbo and turbo and inter cooled and naturally aspired, some in the bearing and mounts and other internal structure
but they were taking a 90 hp naturally aspired engine and cranking with turbo and inter cooling to over 165 and have read up 200 hp, in some units
but that is a doubling of the Hp on a given set of cubic inches,
your talking about 3 hp (a cheap lawn mower in power increase), one I do not think you will hurt the engine, and two I really doubt if you will hardly notice the power increase,
about the most you will notice is the ground speed increases do to the extra RPMs,
look up in parts and see if they both use the same injectors or pump, that could be where the difference is,
on my old Rosa master pumps there is a way of adjusting the max rpm on the governor in the pump, but you need to know what your doing,
is the gear ratios the same in both tractors or is there a difference, as if you increase speed you will need more power to pull a given size implement,
(I would say while the warranty is in place I would not mess with it, as it may void the warranty when the warranty period is over, turbo that sucker and blow black smoke to your hearts content, spin the tread off the tires or what ever you want to do, but you mess with now and if some thing happens (any thing they would have cause to not warranty it.)
but they were taking a 90 hp naturally aspired engine and cranking with turbo and inter cooling to over 165 and have read up 200 hp, in some units
but that is a doubling of the Hp on a given set of cubic inches,
your talking about 3 hp (a cheap lawn mower in power increase), one I do not think you will hurt the engine, and two I really doubt if you will hardly notice the power increase,
about the most you will notice is the ground speed increases do to the extra RPMs,
look up in parts and see if they both use the same injectors or pump, that could be where the difference is,
on my old Rosa master pumps there is a way of adjusting the max rpm on the governor in the pump, but you need to know what your doing,
is the gear ratios the same in both tractors or is there a difference, as if you increase speed you will need more power to pull a given size implement,
(I would say while the warranty is in place I would not mess with it, as it may void the warranty when the warranty period is over, turbo that sucker and blow black smoke to your hearts content, spin the tread off the tires or what ever you want to do, but you mess with now and if some thing happens (any thing they would have cause to not warranty it.)