2022 6.2 engine failure.

[Black02Silverado]

38 minutes ago, gemarsh said:

Well, thinking out of the box. What is the cause.of the mains going out? Trash, cheap bearings, machining, too light of oil?

 

If'n I had the 6 2 tick tick boom engine, I might entertain putting rods and mains in it right away. Be down a week or less and not stranded on the side of the road for a month or more.

 

Used to roll bearings in the frame on OTR trucks for a living just as a mileage precaution. Can't fathom bearing trouble before 50k.

Good question.  These seem to be the trucks that were put out during the pandemic.  So did the supply chain get messed up with lesser quality parts? Odd that they are having issues like this at low mileage.

[PunchT37]

Wonder why the 5.3`s don`t have the same number of bottom end problems? Same bottom end except piston. Same crappy parts.

 

Could it be the higher hp mixed with 0w20 oil, and truck duty = a bad recipe?

[CamGTP]

Oil weight has nothing to do with it. I can make a 5.3 have the same power if not more with a supercharger kit and nothing else, still running the same oil and it won't have a failure because of 0W20.

[Grumpy Bear]

1 hour ago, CamGTP said:

Oil weight has nothing to do with it. I can make a 5.3 have the same power if not more with a supercharger kit and nothing else, still running the same oil and it won't have a failure because of 0W20.

 

That's quite a claim. 

 

So, GM track day recommendations are in error? 

 

2018-chevrolet-camaro-track-preparation-guide.pdf

 

 From below.

 

[PunchT37]

I`m almost 61 yrs old. Started mechanics for a living in 1985. Looking at the track prep above got me thinking. The more things change, the more they stay the same.

 

1`st oil change at 500 miles, take it easy for the 1`st 1500 miles, etc. Sounds exactly like the advise in the old days. Even with these modern engines.

 

Wonder why GM, and all the other manufacturers don`t put this in the every day man`s owners manual?

[PunchT37]

I have a Pontiac 455 [463] now. It has around 630 hp/600 trq. This thing goes to 6400 rpm`s with 3.25 main bearing journal, 2.25 rod and a 4.21 stroke. I started out new with 30w. Used 10w30 for the next oil change and has 20w50 in it now. Runs like a clock.

 

If oil weight has no effect, I wonder what would happen to this thing if I ran it to 6400 rpm`s with 0w20 oil? Especially in the Louisiana heat?  Betcha this thing has bearing problems.  Just sayin.

 

Unless there is a block problem or so, why does the 6.2 have bearing problems and the 5.3, not so much? I know these engines are not the Pontiac 455 but the 5.3 and 6.2 are the same except for the hp.

 

Just thinking out loud on the computer.

Edited July 29, 2024 by PunchT37

[Grumpy Bear]

4 hours ago, PunchT37 said:

I have a Pontiac 455 [463] now. It has around 630 hp/600 trq. This thing goes to 6400 rpm`s with 3.25 main bearing journal, 2.25 rod and a 4.21 stroke. I started out new with 30w. Used 10w30 for the next oil change and has 20w50 in it now. Runs like a clock.

 

If oil weight has no effect, I wonder what would happen to this thing if I ran it to 6400 rpm`s with 0w20 oil? Especially in the Louisiana heat?  Betcha this thing has bearing problems.  Just sayin.

 

Unless there is a block problem or so, why does the 6.2 have bearing problems and the 5.3, not so much? I know these engines are not the Pontiac 455 but the 5.3 and 6.2 are the same except for the hp.

 

Just thinking out loud on the computer.

 

I read somewhere recently the blocks have an issue. Maybe @newdude has the 411 on this 

[PunchT37]

9 minutes ago, Grumpy Bear said:

 

I read somewhere recently the blocks have an issue. Maybe @newdude has the 411 on this 

Like Bugs Bunny used to say;

 

Hmmm, well, could be.

 

Only other difference is the cast crank for the 5.3 vs the forged for the 6.2. Maybe a journal finish problem?

Seems GM should know how to finish a crank by now? The bearings are the same.

 

They should have guys in white robes to figure this out?

[newdude]

3 hours ago, Grumpy Bear said:

 

I read somewhere recently the blocks have an issue. Maybe @newdude has the 411 on this 

 

 

There's been a few reports I've read.  Machining debris, oversized lifter bores and misaligned main bores.  

[KARNUT]

I don’t know anything about the assembly process. Most everything is machined in mass by automation. That would mean more than a few out there are problematic. Otherwise these would have been discovered and not sold. Seems logical to me.

[CamGTP]

17 hours ago, Grumpy Bear said:

 

That's quite a claim. 

 

So, GM track day recommendations are in error? 

 

2018-chevrolet-camaro-track-preparation-guide.pdf

 

 From below.

 

Since when is a 5.3 and 6.2 truck engine the same as a LT1 in a camaro that goes racing?

 

If I was taking my truck to a race track and constantly beating on the engine like it owed me money, I'd probably switch oils too....

[Grumpy Bear]

2 hours ago, CamGTP said:

Since when is a 5.3 and 6.2 truck engine the same as a LT1 in a camaro that goes racing?

 

If I was taking my truck to a race track and constantly beating on the engine like it owed me money, I'd probably switch oils too....

 

When you put a blower on it. That was the claim, right?  Pressurize and pulverize? 

 

Two things a motor doesn't know Camron. What it's in and what name is on the valve cover. A 5.3 towing is getting worked just as hard as a track car. Harder perhaps.  

Edited July 30, 2024 by Grumpy Bear

[asilverblazer]

On 7/29/2024 at 7:37 AM, newdude said:

There's been a few reports I've read.  Machining debris, oversized lifter bores and misaligned main bores.  

Since when can GM not build a small block V8?

 

1. Failing lifters

2. Lifter bores

3. Misaligned main bores

 

All within the last 4 years.

 

If there was 1 thing in the history of GM that they could do right it was a small block V8.

[Grumpy Bear]

10 minutes ago, asilverblazer said:

Since when can GM not build a small block V8?

 

1. Failing lifters

2. Lifter bores

3. Misaligned main bores

 

All within the last 4 years.

 

If there was 1 thing in the history of GM that they could do right it was a small block V8.

 

Keep cutting corners and soon there is nothing left.  

[newdude]

32 minutes ago, asilverblazer said:

Since when can GM not build a small block V8?

 

1. Failing lifters

2. Lifter bores

3. Misaligned main bores

 

All within the last 4 years.

 

If there was 1 thing in the history of GM that they could do right it was a small block V8.

 

 

Since pandemic/getting paid to stay home/quality control took a dump/lowest bidder/even the suppliers are getting from the lowest bidder.