2021 3.0 Diesel on a Dyno @ 396 Wheel & 495 FT-LB CRANK TQ - Video attached

[SolarWizard]

Based off Jeep's website rubicon has a 4.10 rear gear even with the diesel. There's your problem..

no that’s your problem. All diesels have 3.73 gearing

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[Pappy06]

On the build site ( I’m about to order) for 2021 JLURD there is no option but 4.10.

 

[jdubya421]

On the build site ( I’m about to order) for 2021 JLURD there is no option but 4.10.

If you do rubicon you can get 4.10 now.

 

[beaups]

Based off Jeep's website rubicon has a 4.10 rear gear even with the diesel. There's your problem..

From a dyno perspective, all that matters is roller speed, measured torque at the roller, and engine speed. Everything else is calculated.

 

[JayJay]

If you do rubicon you can get 4.10 now.

I think that it's been pretty well established that the build site is in error and that the Rubicons are shipping with 3.73 gears.

Later,
Johnny

 

[40”JLURD]

Mine had no option for 4.11 when I ordered it.

Here is the issue guys, the tech was wrong and it did NOT show the right numbers while not recording.

I got the Dyno charts from the only 2 runs recorded at the end. Still too good for all you nay sayers

(jealous you got the gasser much? Lmao)

Also before we get anymore wannabe Einstein’s with wack formulas here is the correct numbers it put down at the wheels and conversion to crankshaft (which as I said I’m sure you still won’t believe lol)

Two runs were done and recorded. I am going to average the math on the HP & TQ figures since they were only 1 HP or TQ apart between the two runs it’s easy math.

232.5 Wheel HP divide by 4 = 58.125 X 5 = 290.625 Crank HP

396.5 Wheel Torque divide by 4 = 99.125 X 5 = 495.625 Crank HP

Read it and weap gassers.... or complain something still isn’t right whatever floats your boat hahaha

 

[40”JLURD]

Was just a swag but 500wtq = 600ctq * 4500rpm / 5252 = 514chp

See post above with Dyno chart I finally got

 

[40”JLURD]

Yes, but... Did you seat your fuses?

This was mind blowing when I did it today! Nearly all the relays were flopping around barley hanging in there... everything is nice and tight now though. Thanks for the reminder!

 

[40”JLURD]

It works out well closer to 500hp at the crank by my math and the dyno video shows 60hp (lol) and of course no actual dyno sheet.

See update

 

[hollywood323]

Fake news

 

[40”JLURD]

Fake news

I’ll change the thread title just for you

 

[rickinAZ]

I think that the issue most of us have is that history has shown that FCA has an inability to be conservative with regard to performance-related metrics.

No reflection at all on the OP. It seems like the documentation is there; we just still don't believe it.

Now if a second (or especially, a third) member steps forward with dyno-generated corroboration, we may have a hotter motor than we thought - and - FCA has missed an opportunity to crow about it.

 

[40”JLURD]

Sorry - don't believe these numbers at all - something wasn't setup right for correction factors on the dyno

See update on page 4

 

[beaups]

Mine had no option for 4.11 when I ordered it.

Here is the issue guys, the tech was wrong and it did NOT show the right numbers while not recording.

I got the Dyno charts from the only 2 runs recorded at the end. Still too good for all you nay sayers

(jealous you got the gasser much? Lmao)

Also before we get anymore wannabe Einstein’s with wack formulas here is the correct numbers it put down at the wheels and conversion to crankshaft (which as I said I’m sure you still won’t believe lol)

Two runs were done and recorded. I am going to average the math on the HP & TQ figures since they were only 1 HP or TQ apart between the two runs it’s easy math.

232.5 Wheel HP divide by 4 = 58.125 X 5 = 290.625 Crank HP

396.5 Wheel Torque divide by 4 = 99.125 X 5 = 495.625 Crank HP

Read it and weap gassers.... or complain something still isn’t right whatever floats your boat hahaha

That looks good and a lot more plausible. Although I'm not sure why the gassers would be weeping, that's around the same HP as the gas motors are making....without the ~500lb diesel penalty....which is why you don't see much performance difference between any of the powertrains.

 

[jdubya421]

That looks good and a lot more plausible. Although I'm not sure why the gassers would be weeping, that's around the same HP as the gas motors are making....without the ~500lb diesel penalty....which is why you don't see much performance difference between any of the powertrains.

Not to mention that in 4LO (where a Jeep really should be) your engine torque is multiplied by transmission, transfer case, and axle gears to get wheel torque. This well exceeds the weight of the Jeep which is all the torque you can really apply any way. All the motors are fine and suit whatever driving style you want.

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