JD 6400 - Diesel Bombers

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JD 6400

  #1  
Old 09-05-2007, 07:07 PM
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Default JD 6400

Hey,
Was just wondering if any of ya'll knew how to maybe tweak alittle more power out of my dad's 1997 JD 6400. It has the 4 cyl turbo diesel and was made in manneheim germany. Pretty sure it's a 85 hp factory setting. Any help would be appreciated! Thanks
ez
 
  #2  
Old 09-05-2007, 07:18 PM
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Don't quote me on this but I think there is a screw on the pump that you can adjust out to get more fuel. I think that you might actually have a p-pump on there. I am an International man btu I have seen a few JD's and I think that you can do this.
 
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Old 09-05-2007, 08:51 PM
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The problem with turnin up tractors is that they are usually maxed out on the amount of HP the engine can run without tearing up the other parts. Truck manufacturers tend to turn HP down and so we turn it back up, they do this mostly to neet federal guidlines. Tractor manufacturers tend to turn the HP up as high as the machine will support so that they can advertise higher HP and get more money for smaller cheaper to build tractors. So turnin it up could result in driveline problems. I spend some time on a few tractor sites and that question comes up occasionally. What I just gave you is the most common answer given but I have never seen anybody say it's ok to turn them up unless it's for competion.
 
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Old 09-11-2007, 03:24 AM
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Originally Posted by Uncle Bubba View Post
I have never seen anybody say it's ok to turn them up unless it's for competion.
Who said farming wasnt a competition???
 
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Old 10-06-2007, 09:29 AM
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I wouldn't do it, you will start to tear up drivetrain. The motor will handle it fine.
 
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Old 10-06-2007, 08:03 PM
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best way to get more ponies is to sell it and buy a ford/new holland.
 
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Old 10-06-2007, 08:19 PM
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Originally Posted by ez_lle71 View Post
Hey,
Was just wondering if any of ya'll knew how to maybe tweak alittle more power out of my dad's 1997 JD 6400. It has the 4 cyl turbo diesel and was made in manneheim germany. Pretty sure it's a 85 hp factory setting. Any help would be appreciated! Thanks
ez
does it say 4239 on engine plate ? 4 cyl 239 cu/inc engine.
If yes, do bigger injectors, and turn pump up.

Best to do it on a dyno, have done several in my shop.
 
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Old 06-07-2008, 09:51 PM
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I wouldnt turn it up at all.....
 

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