BREAKING: GM is officially recalling the L87

[DuraYuk]

So if my engine is just a month or two beyond the recall in my 2024 what was done differently to keep me from having crank/rod/bearing failure? Is this just a random date or do I have a different crank? Improved Bearings? A better manufacturing procedure?

My Rig should be worth a lot of money since they fixed all the issues. I’ll have the highly sought after 0W-20 dipstick, an unaltered original manual, and best of all thinner oil so I can have more HP and better MPG’s.

I’m so happy they perfected my 6.2 and I will have no worries for hundreds of thousands of miles.

Now back to reality is there really a difference between mine and a recalled 6.2?
I’m still hoping for a DFM recall that will be remedied with a full DOD delete including quality non collapsible lifters and a fresh cam. Common sense tells me that running a V8 on less than 8 is bad and stresses the crank when the firing order is disrupted. I was always told to keep my old small blocks tuned and to ensure I was running on all 8. Even my grandma knew this was important. She use to tell me one of my less intelligent friends wasn’t running on all 8! LOL

What's common sense you speak of? Why do you think old engines run like new engines and new engines are supposed to run like old engines ? You realize that today minivans make more power than supercars did a few decades ago? I don't get that logic.

Technology advances and you make things built to suit.

 

[DuraYuk]

I have seen info that says the affected engines used crankshafts out-sourced from a supplier in Mexico (bean counters in charge) and the unaffected engines are now using CS made at Tonawnada Engine.

Tonawanda Engine is a General Motors engine factory in Buffalo, New York. The plant consists of three facilities totaling 3.1 million square feet and sits upon 190 acres. Wikipedia


Jump to 4:00 min mark for the info,,

Gm gets parts from all over the world. Its not a Mexico vs usa thing. Just a mistake.

But I get what your putting down. Smh.

Wonder who was involved here?

https://www.caranddriver.com/news/a61708841/toyota-tundra-lexus-lx-engine-replacement-recall/

Whose to blame ? A group of people or just a mistake?

 

[Bkihum]

Gm gets parts from all over the world. Its not a Mexico vs usa thing. Just a mistake.

But I get what your putting down. Smh.

Wonder who was involved here?

https://www.caranddriver.com/news/a61708841/toyota-tundra-lexus-lx-engine-replacement-recall/

Whose to blame ? A group of people or just a mistake?

Group call IMHOP

 

[Scarey]

Did Toyota have engines seize or block breached, while on the freeway. Gm did. Maybe Gm should take a lesson from Toyota and stop trying to cheap out and do the right thing.

 

[BacDoc]

Did Toyota have engines seize or block breached, while on the freeway. Gm did. Maybe Gm should take a lesson from Toyota and stop trying to cheap out and do the right thing.

That’s what we would all like to see!

Unfortunately Toyota in those 2 model years only sold 100k vehicles. The number for GM would be 10 times that over the model years of the GM recall.

 

[viven44]

What's common sense you speak of? Why do you think old engines run like new engines and new engines are supposed to run like old engines ? You realize that today minivans make more power than supercars did a few decades ago? I don't get that logic.

Technology advances and you make things built to suit.

It's not about old vs new engines. It's about over-engineering to the point of diminishing returns, which is exactly what has been done by GM with AFM/DFM.

Case in point - 6.6L engines don't use DFM or premium fuel.

Do you realize that the 6.6L engines make more torque under 4000RPM (where it matters for a truck/SUV) and get better fuel economy than the 6.2L (when scaled to curb/tare weight, between the 1500 and 2500/3500 trucks) ?

 

[Z15]

It's not about old vs new engines. It's about over-engineering to the point of diminishing returns, which is exactly what has been done by GM with AFM/DFM.

Case in point - 6.6L engines don't use DFM or premium fuel.

Do you realize that the 6.6L engines make more torque under 4000RPM (where it matters for a truck/SUV) and get better fuel economy than the 6.2L (when scale to curb weight, between the 1500 and 2500/3500 trucks) ?

6.6L is used in the HD pickups which are exempt (1500's and cars are not) from CAFE standards so fuel efficiency is not a goal of the 6.6L design. When the congress passed fuel economy standards (CAFE) many years (pre 2000) ago they exempted 2500+ as work HD commercial trucks, 1500 as pleasure. At the time I worked for state DOT and we started getting 2500 trucks instead of 1500 because the law said, as a state agency receiving federal transportation money 75% of our fleet of cars and light trucks had to be alternative fueled vehicles meeting EPA fuel economy standards or *federal $ could not be used to support those vehicles. So we buy 2500's and that was ok. After 20 years of 1500 suburbans, we got 2500 versions.

*Whole gambit of rules we had to overcome.

 

[DuraYuk]

It's not about old vs new engines. It's about over-engineering to the point of diminishing returns, which is exactly what has been done by GM with AFM/DFM.

Case in point - 6.6L engines don't use DFM or premium fuel.

Do you realize that the 6.6L engines make more torque under 4000RPM (where it matters for a truck/SUV) and get better fuel economy than the 6.2L (when scale to curb weight, between the 1500 and 2500/3500 trucks) ?

Making stuff up now? Lol

The 6.6 is bigger so of course it makes more power lol but doesn't get better economy.

 

[DuraYuk]

Did Toyota have engines seize or block breached, while on the freeway. Gm did. Maybe Gm should take a lesson from Toyota and stop trying to cheap out and do the right thing.

How is gm doing the cheap thing by replacing engines ? Are we all on the same page here ?

 

[viven44]

The 6.6 is bigger so of course it makes more power lol but doesn't get better economy.

Of course it does. The 2500/3500 trucks have a tare weight approximately 2000 lbs more than 1500 trucks but are rated for the same fuel economy as the 6.2L in the 1500 trucks. I am sure I don't need to explain why the tare weight is higher.

Put the 6.6L engine is a lighter body 1500 truck, and it will get better fuel economy than a 6.2L. Doesn't take much to extrapolate that much.

6.6L is used in the HD pickups which are exempt (1500's and cars are not) from CAFE standards so fuel efficiency is not a goal of the 6.6L design.

Yep. The 3/4 and 1 tons are exempt from a lot of stuff. Been this way 40+ years.

Fuel efficiency not being the goal is ironic as the 6.6L is fuel efficient relative to the 6.2L

 

[blanchard7684]

The same is true for everything in life. The difference is whether the company stands behind their mistake.

Are we just punching the air or?

Humans make things. And things can break. What would you like the solution to be?

New engines, extended warranty. What else ?

So you find the response acceptable?

4 or so years to finally get to the bottom of this is ok?

By comparison Toyota took 3 seconds to stomp out a similar bearing issue.

Gm gets parts from all over the world. Its not a Mexico vs usa thing. Just a mistake.

But I get what your putting down. Smh.

Wonder who was involved here?

https://www.caranddriver.com/news/a61708841/toyota-tundra-lexus-lx-engine-replacement-recall/

Whose to blame ? A group of people or just a mistake?

Imagine that.

A leading manufacturer outsources operations away from their center of excellence and ****… problems.

So far we have

Outsourcing isn’t an issue, categorically.

Dealers give techs best training and tools, and pay is top notch.

0w-20 had no contribution to bearing failures in 6.2L.

Can’t wait to see what’s next.

 

[23Seven]

More thorough manufacturing process, including better cleaning after machining of the block.

If y'all actually understood how much the L87 has in common with the LT1,
how the similarities outweigh and outnumber the differences,
how many part numbers they share,
y'all'd have been concerned with the idea of 0W20 years ago.

According to GM, they cleaned the block properly, after a revised machining & assembly process.

I’m very well aware of the similarities between the LT1 and L87. Just sold my 2015 Vette Z51. I had to put 10qrts of 0-40 in that dry sump and it wasn’t cheap. First thing I noticed when I was looking under the hood of my Tahoe was the 0W-20 on the oil cap! I was researching oil for this rig long before the recall. LT1 and L87 share the same Cranks, while the Tahoe is tuned for lower RPM Torque and the LTI more high revving performance they both deserve the higher protection from 0W-40.

 

[23Seven]

What's common sense you speak of? Why do you think old engines run like new engines and new engines are supposed to run like old engines ? You realize that today minivans make more power than supercars did a few decades ago? I don't get that logic.

Technology advances and you make things built to suit.

LOL… Thanks for commenting when you clearly don’t understand the point being made.

 

[DuraYuk]

Of course it does. The 2500/3500 trucks have a tare weight approximately 2000 lbs more than 1500 trucks but are rated for the same fuel economy as the 6.2L in the 1500 trucks. I am sure I don't need to explain why the tare weight is higher.

Put the 6.6L engine is a lighter body 1500 truck, and it will get better fuel economy than a 6.2L. Doesn't take much to extrapolate that much.



Yep. The 3/4 and 1 tons are exempt from a lot of stuff. Been this way 40+ years.

Fuel efficiency not being the goal is ironic as the 6.6L is fuel efficient relative to the 6.2L

It also makes less hp. So you think that the reason for this is afm/dfm? Lol

 

[DuraYuk]

So you find the response acceptable?

4 or so years to finally get to the bottom of this is ok?

By comparison Toyota took 3 seconds to stomp out a similar bearing issue.


Imagine that.

A leading manufacturer outsources operations away from their center of excellence and ****… problems.

So far we have

Outsourcing isn’t an issue, categorically.

Dealers give techs best training and tools, and pay is top notch.

0w-20 had no contribution to bearing failures in 6.2L.

Can’t wait to see what’s next.

Do you know when the toyota recall happened ? And when those vehicles were made ?

https://www.caranddriver.com/news/a61708841/toyota-tundra-lexus-lx-engine-replacement-recall/

Can you prove me wrong about the dealer tools/training/salary?

You sound like someone that just googled stuff. I promise you that the domestic dealers especially GM pay the most in terms of flat rate anywhere outside of boutique and niche stores. I know this. Its not something I think.

Please prove me wrong..

Here it says GM pays 46% higher than national average. Crazy huh ?

https://www.indeed.com/cmp/General-Motors/salaries/Technician

0w-20 has been used in millions upon millions of engines. Millions of 6.2 but now its a problem? Can you prove to me why it is now a problem but wasnt for the millions of other vehicles including 6.2? Please prove me wrong.

You say a lot of BS but cant back up any of it outside of feels.

Do I need to make a YouTube video for you ?

 

[DuraYuk]

LOL… Thanks for commenting when you clearly don’t understand the point being made.

Tell us your point. Tell us how afm/dfm is now a problem but wasnt for millions of other vehicles.

Tell is how 0w 20 is now a problem but isnt for millions of other vehicles.

Please tell me. Tell us. We would all love to see your points.

 

[viven44]

It also makes less hp. So you think that the reason for this is afm/dfm? Lol

Horsepower doesn't mean a lot for Trucks, and Torque is what you feel when you mash the throttle and are pushed back

Horsepower = Torque * RPM / 5252, so if an engine makes torque closer to 5252 RPM it is going to make the most horsepower.

6.6L's intake/cam design is optimized to make torque in the lower RPM, and by 'virtue' of the horsepower math mentioned above it makes less horsepower than the 6.2L.

See the curves below, 6.2L makes more torque than the 6.6L over 4200 RPM, and thus the peak horsepower is higher by 20 or so...... BUT..... the higher torque of the 6.6L in the 1000-4000RPM means increased leverage to move tires in the lower RPMs (necessitating smaller throttle application = reduced fuel consumption) where the vehicle is driven mostly.

Along those lines we've already proven here in discussion that the 6.2L is actually more fuel efficienct than the 5.3L.

More throttle = less mpg.

When comparing closely related engines in terms of appetites/application

Bigger load / vehicle weight = more throttle. Bigger torque = less throttle.

We are dealing with vehicles that are REALLY HEAVY here, and they seriously need some good low-end torque to improve fuel economy.

You have a diesel from what I can tell, so be happy and move on, lol haha

 

[DuraYuk]

Horsepower doesn't mean a lot for Trucks, and Torque is what you feel when you mash the throttle and are pushed back

Horsepower = Torque * RPM / 5252, so if an engine makes torque closer to 5252 RPM it is going to make the most horsepower.

6.6L's intake/cam design is optimized to make torque in the lower RPM, and by 'virtue' of the horsepower math mentioned above it makes less horsepower than the 6.2L.

See the curves below, 6.2L makes more torque than the 6.6L over 4200 RPM, and thus the peak horsepower is higher by 20 or so...... BUT..... the higher torque of the 6.6L in the 1000-4000RPM means increased leverage to move tires in the lower RPMs (necessitating smaller throttle application = reduced fuel consumption) where the vehicle is driven mostly.

Along those lines we've already proven here in discussion that the 6.2L is actually more fuel efficienct than the 5.3L

We are dealing with vehicles that are REALLY HEAVY here, and they seriously need some good low-end torque to improve fuel economy

You have a diesel from what I can tell, so be happy and move on, lol haha

View attachment 458048

Be happy with what ? This thread is heavy with misinformation

 

[viven44]

Be happy with what ? This thread is heavy with misinformation

That you don't own a 6.2L, and the fuel economy on the diesel

 

[DuraYuk]

That you don't own a 6.2L, and the fuel economy on the diesel

Yeah no doubt. But its the misinformation. This thread is full of it.

I think rather than objective data people just are going by 'feels' lmao