Adding turbo to John deere 5420

   / Adding turbo to John deere 5420 #1  

TNJeff

New member
Joined
Mar 18, 2025
Messages
1
Tractor
John Deere 5420
Hey all, this is my first post but i have gotten many questions answered by just reading different post/answers for years now. hay season is quicky approaching us and i was looking to get a little more hp out of my John deere 5420. to my knowledge the only difference between the 5420 and 5520 is the turbo. same engine size and displacement. what would i be looking at in doing this add on? Intake manifold, Exhaust manifold, turbo, and oil lines? if the hp and fuel savings worth it?
 
   / Adding turbo to John deere 5420 #2  
An increase of 8 horsepower when you are over 80 hp isn't as much as you would think. I own a JD2555 and a JD2555 that had a 2755 engine installed in it. From the operating station, I can't tell the difference in the two tractors doing the same jobs, such as pulling the 15' batwing. There are differences in the two tractors, but they arise from one having a loader and 4wd and the other just being 2wd.
I am thinking that what you do with that 81 horsepower versus the 89 horsepower is going to be the answer to your question. There are some operations that use a lot of hp and some that don't. Whatever it is that you think you are going to improve with 8 additional horsepower, probably won't show up from the operator's station. It might show up over the long term in a spread sheet, but I doubt it.
As much as I hate to say it, I doubt spending the money and time will be worth it in the long haul.
Another example when 8 horsepower makes a difference is on smaller tractors. I went from a Ford 1100 to a Ford 1210 to gain 3 horsepower. That was just enough to allow me to pull a 5 foot finish mower. In reality, I wasn't really satisfied with the 1210's increase in horsepower and when I acquired a 29 horsepower tractor, it became my 5 foot finish mower power source.
David from jax
 

Tractor & Equipment Auctions

1000 Gallon Fertilizer Tank (A45788)
1000 Gallon...
2023 Chevrolet Silverado 4x4 Crew Cab Pickup Truck (A42744)
2023 Chevrolet...
AGT Compact Track Loader (A45788)
AGT Compact Track...
Fella SM320 Disc Mower (A45788)
Fella SM320 Disc...
2017 TAKEUCHI TB260R HYDRAULIC EXCAVATOR SN:126102058 powered by diesel engine, equipped with Cab, (A40020)
2017 TAKEUCHI...
2015 FREIGHTLINER CORONADO 122 SD (A45046)
2015 FREIGHTLINER...
 
Top