Some questions about Deere engines

   / Some questions about Deere engines #11  
One thing for sure is the torque rise from the extra cylinder.
 
   / Some questions about Deere engines #12  
I really liked the old Mercedes 5 cylinder engine that had factory turbos.. 120 hp...Lots of get up above 45 mph. This same engine was born a 4 cyl. in smaller cars.
 
   / Some questions about Deere engines #13  
What is also strange is that JD used that 5cylinder in the 5225 and 5325 and then used a 4cylinder in the 54,55,5625's in previous years. Strange.
 
   / Some questions about Deere engines #14  
Well... I think you answered the basis of my position. 75 Hp from the 179 cu. in. powerplant is likely at the upper limit and using it in a heavier chassis (with cab, too) tractor could shorten the "duty-cycle" for that powerplant. That's not a situation that JD wants for their "flagship" optioned tractor that is positioned for heavy duty applications with a long service life.

The 4.5L 4-cylinder powerplant turns out 85Hp while "yawning" with 8-9psi turbo boost. It's understood that turboing an engine also serves to "clean up" the emissions and fuel efficiency as well as increase power output. Dropping the turbo for a naturally aspirated engine for placement in the 65-75Hp range would likely "dirty" the emission's and make the engine fall out of the Tier III-IV rating's.

Check over the stat's here: TTL test reports/JD Deere

Good reading - and note that the 5 cyl. in the 75M is neck and neck with the torque output for the 85M!!

AKfish


That just made me mad cause I own a 5085M, MORE TURBO BOOST! :laughing:
 

Tractor & Equipment Auctions

2020 John Deere HPX615E Gator 4x4 Utility Cart (A55787)
2020 John Deere...
Toro GreensMaster 1600 Walk-Behind Reel Mower (A55787)
Toro GreensMaster...
UNUSED KIVEL 3500# PALLET FORKS (A54757)
UNUSED KIVEL 3500#...
2011 JACK COUNTY 130BBL VAC TRAILER (A55745)
2011 JACK COUNTY...
2008 Ford F-150 Ext. Cab Pickup Truck (A55788)
2008 Ford F-150...
Future 72in Dual Cylinder Grapple Skid Steer Attachment (A55787)
Future 72in Dual...
 
Top