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

ez_lle71's Sig:

Daily driver:92' D250,regcab,2x4,getrag360,KDP killed,Chrome 5" turnout stack,BHAF w/mount & intake,isspro pyro&boost,turned up VE pump,HX-35,2nd gen chrome rims, dual batteries, headlight relays tiny tach
Good Truck:04.5' ram 2500,regcab,4x4,NV5600,muff del,alum fltbd,silencer ring MIA,gutted torque tube, Amsoil 4510 w/pvc adapter,Boss hogg bumper grill guard
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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.

06 DIESEL's Sig:

My rig - 06 Dodge Ram 2500 Crew Long 4x4 SLT CTD 6 speed

A little here, a little there, now it smokes

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.

Uncle Bubba's Sig:

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99 Quad Cab, 4wd, Drag Comp W/Pump Wire & Boost Elbow installed, K&N Air Canon, MBRP exhaust, Belt Drive Lift Pump and bottom Bulkhead feed from the tank, Isspro EV Pyrometer, Boost Gauge, Fuel Pressure Gauge, DT Pro Fab Trac Bar, South Bend 13-1.25 Con O Clutch, Ranch Hand Bumper, Borgeson Steering Shaft, Black Silicone Boots, 2" Lift Soft Ride Front Coils, Solenoid High Idle Kit, Bilstein 5100 HD Shocks, Rickson 19.5 Wheels w/Hancoock Rubber, HD Maxx Link Sway Bar Links, Superlift dual front stabilizer, EGR Brakes Front and Back, RV275 Injector's, Blue Chip VP44, Prodigy brake controller, B&W Gooseneck hitch and more I can't remember right now. Not to mention more to come I'm sure.
374.2/846.7 at 30psi

Who said farming wasnt a competition???

LOGANSTANFORTH's Sig:

THEY SAY CRIME DOSENT PAY, BUT NEITHER DOES FARMING THESE DAYS

I wouldn't do it, you will start to tear up drivetrain. The motor will handle it fine.

SEA04DMAX's Sig:

Steve
2004.5 GMC2500HD , LiLLY, DURAMAX, ALLISON, ATP Suncoast Stage IV, ATP EFI LIVE Tuning.

best way to get more ponies is to sell it and buy a ford/new holland.

tn hillbilly's Sig:

My Rig: 2003 2500 CTD 4x4 6 spd, SBC Con OFE, Airaid Modular Intake tube, DIY Airbox Mod, Silencer Ring MIA, Westin Wheel to Wheel Bars.
Wifes Rig: 2002 Ford Excursion, 7.3 Power Stroke, 4x4

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.

saab9k's Sig:

02 3500 slt with camper package, 6 speed HO engine, M80 3:54 locker rear end, quad cab, 2 wheel drive, now single wheels on rear on 8" rims, changed to a flat bed, same size as cab + 1", 7 1/2 ' long, shorted frame 6". Goose hitch mounted on frame under bed.
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I wouldnt turn it up at all.....

Cumminscowboy_101's Sig:

1996 Dodge Cummins 3500 daully, 4x4 5 speed manual. Daul whips with Cobra CB, toolbox, straight pipe exhaust, custom air-flow tail gate, 2" block lift. Lots more to come in the near future!!
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