RobNY

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VIA https://www.thedrive.com/news/39794...-new-jeep-wrangler-by-flat-towing-it-in-4-low

RV Driver Annihilates Their New Jeep Wrangler by Flat-Towing It in 4-Low
This is what a Jeep engine looks like when revved to 50,000 rpm.

Last month, we asked you about your absolute worst towing experiences. Many of you had some great stories to share, but I think I've finally found one that takes the cake, and it involves destroying a new 2021 Jeep Wrangler Rubicon by flat-towing it improperly.

According to a TikTok video [video since removed] shared by shop foreman Toby Tuten, this white Wrangler Rubicon arrived at a North Florida dealership last week for service after being flat-towed behind the owner's RV. It seemed odd to Tuten that a brand-new Jeep was in for service, especially since it had less than 10,000 miles on the odometer. When he looked underneath the vehicle, however, he decided to start filming just to show the world what happens when you improperly flat-tow a four-wheel-drive off-roader and forget to take it out of gear. It's a rather expensive lesson indeed.


F1615869694240-20210316-jeepwranglertowingsubhero3.jpg



In case you can't discern what you're looking at, that's the Jeep's 3.6-liter V6 as seen from below. And before you ask, no, the oil pan wasn't delicately removed to show the internals—it was peeled back like a can of sardines when the transfer case quite literally exploded.

Tuten told The Drive that when the techs began diagnosing the vehicle, they noticed it had been left in "4-Low," which is what you'd want when traversing rough terrain at low speeds, or if stuck in a rut—but most definitely not while being towed at highway speeds. For reference, the JL Wrangler manual explicitly states not to exceed 25 miles per hour with 4-Low engaged.

What's even more damaging is that the vehicle was also left in first gear, meaning that as the wheels of the Wrangler turned, so did the driveshaft, transmission, and the rotating assembly of the engine. Tuten did a bit of napkin math and figured that at 55 mph, the engine was spinning somewhere around 50,000 rpm, well above the factory redline of 6,600 rpm.

The engine revved so high that the crankshaft sheared off, sending the two rear-most pistons and rods through the block. The clutch and flywheel also went flying through the transmission's bell housing and lopped off its input shaft.

As you might expect, this job quickly turned into a rather expensive fix. Tuten said that the final bill of replacement parts is close to cresting $30,000, and that doesn't include labor. And no, this isn't something covered under the factory warranty. It's likely that insurance would also consider this mechanically totaled, but whether or not the insurance company will cover the mishap is unknown.

It certainly sucks to see this happen to such a new vehicle, but I think it's fair to give this event the crown of "worst towing experience." But maybe—just maybe—this story will pop in your head the next time you're flat-towing and debate double-checking your load before taking off.
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old mike

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little red 2021 JLR (Ruby J. L. Tudor)
Yes, this JLR suffered a lot of expensive damage; however, in the eyes of someone wanting to "build out" a hardcore off-roader, there's plenty of lemonade to be made here.

Damage to the engine? A hardcore off-roader might be looking to do a swap anyway.

Damage to the transmission? The 8L90 is a great choice if you're doing an engine swap anyway.

Damage to the transfer case? An Atlas II would be nice ...and upgrade the axles and drive shafts while you're at it.

For, again, a hardcore off-roader, this totaled hunk of junk is a discounted bargain waiting to meet its destiny.
 

Abramovich

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BigGreen

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Yes, this JLR suffered a lot of expensive damage; however, in the eyes of someone wanting to "build out" a hardcore off-roader, there's plenty of lemonade to be made here.

Damage to the engine? A hardcore off-roader might be looking to do a swap anyway.

Damage to the transmission? The 8L90 is a great choice if you're doing an engine swap anyway.

Damage to the transfer case? An Atlas II would be nice ...and upgrade the axles and drive shafts while you're at it.

For, again, a hardcore off-roader, this totaled hunk of junk is a discounted bargain waiting to meet its destiny.
This one has a straight frame at least. Find one that was rolled and take the guts out and you have a runner.
 

blueweb

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Jake
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2004 TJ Rubicon
There’s no way in hell that engine reach 15,000 RPM let alone 50,000 RPM
617 revs per mile (stock tire size) x 4.1 revs of driveshaft x 4.0 revs of trans output X 5.13 ratio of 1st gear.

At 60 MPH
2529.7 rpm of the drive shaft
10118.8 RPM of trans output
51909.4 RPM of Trans input/Engine
 

Vinman

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Vince
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Calgary, Alberta
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2021 JLU Rubicon
617 revs per mile (stock tire size) x 4.1 revs of driveshaft x 4.0 revs of trans output X 5.13 ratio of 1st gear.

At 60 MPH
2529.7 rpm of the drive shaft
10118.8 RPM of trans output
51909.4 RPM of Trans input/Engine
I know the math works out to over 50k RPM but my point was those previously internal engine components were freshly external components long before 15,000 RPM.
 

Jeffery

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2021 JL 2-door, and 1987 YJ with 427 SBC
I can fix it!!
 
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Jeepnutz

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Don
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2022 Jeep Wrangler Rubicon XR
VIA https://www.thedrive.com/news/39794...-new-jeep-wrangler-by-flat-towing-it-in-4-low

RV Driver Annihilates Their New Jeep Wrangler by Flat-Towing It in 4-Low
This is what a Jeep engine looks like when revved to 50,000 rpm.

Last month, we asked you about your absolute worst towing experiences. Many of you had some great stories to share, but I think I've finally found one that takes the cake, and it involves destroying a new 2021 Jeep Wrangler Rubicon by flat-towing it improperly.

According to a TikTok video [video since removed] shared by shop foreman Toby Tuten, this white Wrangler Rubicon arrived at a North Florida dealership last week for service after being flat-towed behind the owner's RV. It seemed odd to Tuten that a brand-new Jeep was in for service, especially since it had less than 10,000 miles on the odometer. When he looked underneath the vehicle, however, he decided to start filming just to show the world what happens when you improperly flat-tow a four-wheel-drive off-roader and forget to take it out of gear. It's a rather expensive lesson indeed.


F1615869694240-20210316-jeepwranglertowingsubhero3.jpg



In case you can't discern what you're looking at, that's the Jeep's 3.6-liter V6 as seen from below. And before you ask, no, the oil pan wasn't delicately removed to show the internals—it was peeled back like a can of sardines when the transfer case quite literally exploded.

Tuten told The Drive that when the techs began diagnosing the vehicle, they noticed it had been left in "4-Low," which is what you'd want when traversing rough terrain at low speeds, or if stuck in a rut—but most definitely not while being towed at highway speeds. For reference, the JL Wrangler manual explicitly states not to exceed 25 miles per hour with 4-Low engaged.

What's even more damaging is that the vehicle was also left in first gear, meaning that as the wheels of the Wrangler turned, so did the driveshaft, transmission, and the rotating assembly of the engine. Tuten did a bit of napkin math and figured that at 55 mph, the engine was spinning somewhere around 50,000 rpm, well above the factory redline of 6,600 rpm.

The engine revved so high that the crankshaft sheared off, sending the two rear-most pistons and rods through the block. The clutch and flywheel also went flying through the transmission's bell housing and lopped off its input shaft.

As you might expect, this job quickly turned into a rather expensive fix. Tuten said that the final bill of replacement parts is close to cresting $30,000, and that doesn't include labor. And no, this isn't something covered under the factory warranty. It's likely that insurance would also consider this mechanically totaled, but whether or not the insurance company will cover the mishap is unknown.

It certainly sucks to see this happen to such a new vehicle, but I think it's fair to give this event the crown of "worst towing experience." But maybe—just maybe—this story will pop in your head the next time you're flat-towing and debate double-checking your load before taking off.
Wasn't this already posted last March?
 
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