Extremely hot exhaust - Non-Etorque 5.7L

[Shots]

 

[hpiblitz144]

Well, you've got to put a giant sticker right next the obnoxious airbag one on the visor that can't be removed, of course.



Well, not to be a wet blanket and kill the humor we've got going here, but I'll answer your question with a serious answer. I suspect the above is the difference. The exhaust on the 5th gen may be more free flowing than the 4th gen, so the temps aren't dissipated as much when the gases get to the tips. As such, the gases coming out are hotter, and the tip is subsequently heated more than a more restrictive exhaust.


Sounds like Ram is saying you're good to go after 60 miles.
The old break in periods were due to the looser tolerances in manufacturing years ago. We can hold MUCH tighter tolerance than ever before, so the parts fit better and there's no need for long break in periods like there used to be.

And to clarify, people were making jokes because you called it a break in "mode" as if it was a setting on the truck. If you had asked about break in period, or break in mileage, or something like that this would have been a much more boring thread.

Anyway, the nerd will shut up now. Sorry to ruin all the fun. Back to the wise crack

I appreciate the nerdy and intelligent answer to this thread. Much appreciated!

 

[Dewey]

I just came from a 2017 and that had hot exhaust tips as well. I must have messed up and forgot to order the cold tailpipe option back then.

 

[ferraiolo1]

ENGINE BREAK-IN RECOMMENDATIONS​

For vehicles equipped with the 3.6L or 5.7L use the following engine break-in recommendations:
A long break-in period is not required for the drivetrain (engine, transmission, clutch, and rear axle) in your new vehicle.
Drive moderately during the first 300 mi (500 km). After the initial 60 mi (100 km), speeds up to 50 or 55 mph (80 or 90 km/h) are desirable.
While cruising, brief full-throttle acceleration within the limits of local traffic laws contributes to a good break-in. However, wide-open throttle acceleration in low gear can be detrimental and should be avoided.
The engine oil, transmission fluid, and axle lubricant installed at the factory is high-quality and energy-conserving. Oil, fluid, and lubricant changes should be consistent with anticipated climate and conditions under which vehicle operations will occur. For the recommended viscosity and quality grades, refer to “Maintenance Procedures” in “Maintaining Your Vehicle”.
CAUTION!:
Never use Non-Detergent Oil or Straight Mineral Oil in the engine or damage may result.
NOTE: A new engine may consume some oil during its first few thousand miles (kilometers) of operation. This should be considered a normal part of the break-in and not interpreted as an indication of difficulty. Please check your oil level with the engine oil indicator often during the break in period. Add oil as required.

That’s just a standard break in procedure.

Where are you seeing “break in mode”?

At 1400 miles you’re well past the break in period.


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[hpiblitz144]

That’s just a standard break in procedure.

Where are you seeing “break in mode”?

At 1400 miles you’re well past the break in period.


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Break in mode was just a reference. Some manufacturers used to set a pre-determined mileage or timeline and retard timing to help with easing the break in of the engine. after the mileage or timeline the unit would return to "normal" with an increase in fuel economy and power. this is also very big in the powersports world for engines.

break in mode could have been a bad set of words, I just figured more people would understand the point i was coming across.

 

[Richard320]

Sounds like you just started the truck and maybe jockeyed it around a little but mostly it was just idling. If it's cold and in open loop, it's going to run rich, which is going to really heat up the catalytic converter, and thus the exhaust. See if it still seems unreasonably hot after you've driven it somewhere and it just got home and is idling.

 

[ferraiolo1]

Break in mode was just a reference. Some manufacturers used to set a pre-determined mileage or timeline and retard timing to help with easing the break in of the engine. after the mileage or timeline the unit would return to "normal" with an increase in fuel economy and power. this is also very big in the powersports world for engines.

break in mode could have been a bad set of words, I just figured more people would understand the point i was coming across.

Correct. But in your typically daily driver that’s not the case. If you want to floor, rolling a burnout out of the dealer lot you can on these trucks. You’re way past the break in point. Go enjoy the hemi


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[User_3336]

SOOOOOOOOO, what is the "normal/typical" temperature for a Hemi exhaust? All this talk of it being "too hot/overly hot". What should the temp be?

 

[Rick3478]

It might bear mentioning that while in motion there is a lot of air flow under the vehicle that will cool the pipes, but at idle there is little or no air flow. So it is not unreasonable for pipes to be a lot hotter at stationary idle.

 

[Idahoktm]

Break in mode was just a reference. Some manufacturers used to set a pre-determined mileage or timeline and retard timing to help with easing the break in of the engine. after the mileage or timeline the unit would return to "normal" with an increase in fuel economy and power. this is also very big in the powersports world for engines.

break in mode could have been a bad set of words, I just figured more people would understand the point i was coming across.

You said, "When should we see a break in mode disappear?" Like it was a message in your UConnect screen telling you that you were still in the break-in mode.

I have never heard of any auto manufacturer retarding the timing or programming the ECU for specific break-in performance. I can only think of the older ETEC sleds having a pre-programmed break-in mode.

 

[Mountain Whiskey]

Basically "Break in Mode" is "don't let the service manager see you lighting them up fishtailing out of the parking lot upon delivery".

 

[jl13]

You said, "When should we see a break in mode disappear?" Like it was a message in your UConnect screen telling you that you were still in the break-in mode.

I have never heard of any auto manufacturer retarding the timing or programming the ECU for specific break-in performance. I can only think of the older ETEC sleds having a pre-programmed break-in mode.

this is what I remember in regards to break in period
2012 - take it easy first couple hundred miles instruction upon delivery of vehicle
2017 - here are the keys congratulations, enjoy your new hemi - I did get a call from Chrysler with less than 2000 miles- survey and satisfaction- I complained that the mpg's were a joke and that the window sticker was misleading - I was told the engine was not broken in yet and that mpg's would improve - I am gonna called that BS but I can see how the break in period could be misleading depending on who you talk to or if you read the manual or not
2021 - don't tow during first 500 miles