Any CAT guys here that can run my serial number? Just wondering what my 6NZ can be uprated to with a factory flash. Driveline is rated for 1850 ft/lbs and is supposedly set at 475/1850 now. Dyno'd at 402 HP at the wheels when I bought it, 24.5 rubber.
Also, I'm confused - it shows ADV 475 HP and MAX 445 HP. What does this mean? ADV = Advertised horsepower?, but it's above MAX? Just curious.
THANKS
SER. NO. 6NZ87859
CAT 6NZ uprate question, serial number in picture
Discussion in 'Trucks [ Eighteen Wheelers ]' started by dieselfuelonly, Oct 5, 2017.
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I never ran your serial # but I'm almost positive all the 6nz series you can up rate to 550/1850 without a hard parts change. It's just a simple reflash. Especially because yours is a 475 now.
There not like some the early low HP E models that required hard parts to get to 550.dieselfuelonly, Oxbow and SAR Thank this. -
This is from CAT SIS
C-15 TRUCK ENGINE
Engine Serial Number - 6NZ87859 (Build Date - 16/09/2002, Test Date - 16/09/2002, Ship Date - 19/09/2002)
S/N 6NZ30993-90822
354 BRAKE KW (475 BHP) AT 2100 RPM. PACCAR, JAKE BRAKE
dieselfuelonly, Oxbow and cke Thank this. -
All 6NZ can be uprated to 550/1850.
As for the advertised HP and max HP being different I'm not 100% sure on the reason they do it but I know many times it has to do with a "smart torque" power rating where it limits output power based on engine load and other parameters.dieselfuelonly and Oxbow Thank this. -
Thanks guys, appreciate it.
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For what it's worth, a Peterbilt mechanic friend of mine told me that they (Peterbilt), would flash my C15 475/1650 torque engine to 550 HP, but not uprate the torque as long as I retained my low torque 10 speed tranny.
Now that I've upgraded to an 1850 torque 18 speed, they'd have no problem flashing the whole program. -
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Heard the story so many time of guys flashing from 475 to 550 and noticing little to no difference. A dealer reflash is worthless. Need a GOOD tuner to make a real difference. A cat dealer is limited to using the latest cat file. Latest does not equal greatest
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