E-Torque Start Stop VS Bearings

[goggles]

Forgive me if this has been talked about, could you lead the the thread that does.

Im looking a possible problems the E-Toque can pose down the road from start stops, this cannot be good for things like crank and rod bearings, even though the engine is warm during these cycles I still find it hard to buy into, question arises, did FCM beef up internals like the main and rod bearings, or did they just slap the E-Torque system on the 5.7, in Canada you can still get a new 2023 without E-Torque, the kicker is when your looking to dress up a Limited 1500 and you want the salt type seats, your thrown into the Elite package, no problem with that, I like most of the stuff in that package, but to get it you must have the E-Torque, the mds 5.7 is called the 25K package and with E-Torque you get the 27K package, not that big of a deal as I can go with the Limited Longhorn and get what I want but different color seats all together, when your going to spend almost 100K on a truck, you sort of want to get what you want as close as possible.

There are plenty of people who are happy with E-Torque, but it looks like it hasn't been out long enough to determine any extra wear, and how much money are you actually saving vs wear, if your commuting in places like Los Angeles and Toronto every day, my thinking is you will have saved enough money at the end of the week to buy a box of prozac to calm you down from your weekly commutes.
Last but not least I don't want air suspension, there is going to be enough problems with electronics to put up with.

 

[mikeru]

It wouldn't be limited to etorque engines if this really is a problem. Every vehicle with stop/start could be affected by it. I haven't researched this, but there should be data on the effects of stop/start on engines. Theoretically it shouldn't stop the engine long enough for the oil film to be reduced enough to cause the kind of wear that occurs at cold start. But that's just my thinking on it. Personally, I always disabled stop/start when I had a truck with etorque. I also disable it on my current daily driver (Audi A4). Our 2020 Limited doesn't have etorque, which I'm ecstatic about.

 

[goggles]

It wouldn't be limited to etorque engines if this really is a problem. Every vehicle with stop/start could be affected by it. I haven't researched this, but there should be data on the effects of stop/start on engines. Theoretically it shouldn't stop the engine long enough for the oil film to be reduced enough to cause the kind of wear that occurs at cold start. But that's just my thinking on it. Personally, I always disabled stop/start when I had a truck with etorque. I also disable it on my current daily driver (Audi A4). Our 2020 Limited doesn't have etorque, which I'm ecstatic about.

Thanks for the reply, I was doing some research into cars in Europe, most of them are being switched over to start stops using various techniques, they basically had to meet almost impossible to impossible environmental rules forced by governments, needless to say when it comes to bad ideas, governments top the list, especially when telling auto engineers how to build cars.

 

[pacofortacos]

Why and how would it cause any damage?
Oil pump starts pumping as soon as the engine is turned over, since it just stopped, everything is primed with hot oil ready to lube.
Should be considerably less wear than a cold start and we really don't worry about those.

 

[mikeru]

Less wear than a cold start is still more wear than if the engine stays running. I personally don't know if more wear occurs with stop/start but I'd rather err on the side of caution.

I don't think it's a case of not worrying about cold starts, as much as the fact that there's little that can be done about them.

 

[goggles]

I was going through some calculations and these are lab numbers not real world, real world would most likely be less, an average start stop on a life of a car would be 100k stop starts. which includes both cold and warm starts, an active start stop system on a car jumps it to 300K-400K, how many one or more minute stops have been made, sure there is less wear on a warm startup, but its the amount of warm start ups thats going to add things up, thats why I want to know if the e-torque engine has beefed up certain parts, Im trying to find parts list for the 5.7 and if there is a separate list for the e-torque version, that would tell it all.
Ive driven a new e-torque 5.7 ram, and it works flawlessly. but then again it was brand new at the dealer, many owners also have good reports in real life usage, the e-torque is defiantly one of the best stop start systems out there, some systems are a regular starter beefed up and a beefed up flywheel, I can see why the Europeans are buying components that delete the start stop.
Im coming from a 07 5.7 to 2023, 5.7, there has been huge changes in almost everything in the Ram, so I want to do my research into everything so I know what Im getting and what to expect.

 

[mikeru]

I'd be more than surprised if there were any differences between the etorque hemi and non-etorque hemi. I mean, besides the fact that one has an alternator and one has the motor/generator. I don't see them having any internal differences.

 

[JayLeonard]

I'd be equally concerned about the starter.

 

[ThunderMug95]

Theres a thread here talking about replacement costs on the e-torque alternator…pretty steep. Wonder if that included a core?
I will avoid start/stop at all costs. It is completely unnerving to feel and hear the motor quit. My wife’s Terrain does this and still bothers me 4yrs later. Its just unnatural!

 

[pacofortacos]

Less wear than a cold start is still more wear than if the engine stays running. I personally don't know if more wear occurs with stop/start but I'd rather err on the side of caution.

I don't think it's a case of not worrying about cold starts, as much as the fact that there's little that can be done about them.

True, but the engine turns a revolution or 2 pumping oil before it fires up.
I don't have the etorque but have had stop/start on my fleet vehicles for several years now and they were all starter.

The etorque should be easier on the motor than the starter type because doesn't it use the etorque motor for the first 1/2 tire revolution as an assist at least?