Why no Ecoboost in the F250?

[charles todd]

Just have a set of the fancy lifters for the GM and should be Gtg

The 6.0L Vortec doesn't have the DOD and the associated lifter issue. Always on all 8 cyl.

CT

 

[hiddentacocatneddih]

The belt on the back of the 3.0 duramax is a terrible design.

It cost to much to justify buying a smaller truck.

 

[charles todd]

No doubt the 5.7 was *****.

Was the 6.2L actually unreliable? I know it was slow as a dog, but it had a good rep as a solid engine from what I remember.

6.5 threw that away, of course.

Have a 1984 C10 Silverado with 140,000'ish miles. 6.2L N/A, OD Auto trans, 2wd, 25+mpg. Just do not get in a hurry and it isn't set up to tow heavy.

CT

 

[Renze]

No doubt the 5.7 was *****.

The German GM division, Opel, made the same mistake around back then with their 1.7 gas converted to Diesel. Such a disaster that Isuzu saved the day by supplying a better 1.7 Diesel in short time.... Without Isuzu, where would GM be...

 

[Hay Dude]

The belt on the back of the 3.0 duramax is a terrible design.

It cost to much to justify buying a smaller truck.

Yeah it‘s what kept my wife and I from buying a new Tahoe diesel back in 2020.
Really nice vehicle & engine otherwise.

 

[Renze]

The belt on the back of the 3.0 duramax is a terrible design.

Looks like they went with a timing chain and just the oil pump belt driven. Thats a bummer because engines with oil immersed belts usually are picky on oil.

In the latest iteration the replacement interval is increased to 200.000 miles, so i'd want the crank seal replaced at the same time once its open...

https://www.gm-trucks.com/forums/uploads/monthly_2019_06/Cannell_GM_3LdieselFirstDrive-2.jpg.14dbc63d98ba673e3d2581f602521018.jpg

 

[hiddentacocatneddih]

Atleast they increased the interval to where most people will have gotten rid of the truck

Belts dont belong IN engines. Timing and oil pumps should be gears. Period.

 

[Hay Dude]

Atleast they increased the interval to where most people will have gotten rid of the truck

Belts dont belong IN engines. Timing and oil pumps should be gears. Period.

Would like to see the warranty on the belt. If part of the drivetrain, it would give me a little more peace of mind that its covered.
Why do diesel engine designers keep injuring the diesel engine with design flaws?

 

[Renze]

Atleast they increased the interval to where most people will have gotten rid of the truck

Belts dont belong IN engines. Timing and oil pumps should be gears. Period.

I buy vehicles beyond that mileage, and i allways check if the timing belt is due, before negotiating on the price.

A quick google search learns that changeing that belt takes up to 14 hours. That seems a lot to me because on most 2wd vehicles you can drop the gearbox in an hour, which is quicker than removing a cooling package, alternator, harmonic damper, which you'd have to do if the belt was mounted on the front.

Newer Ford engines have wet timing belts too, which require special oil that doesnt age the rubber.

My brother had a 1983 Benz 300D with a triplex timing chain. He changed it once in its million km life.
VW had a "maintenance free" timing chain up untill 2008. Guess what, the single, bicycle sized chain, wasnt. Sometimes engines wont fire because the cam is too out of sync due to the chain elongating with wear.

I understand they use timing belts for noise reduction. But if you already have timing chain rattle for the rest, why another maintenance point ?

It wouldnt put me off of buying one though, i just wouldnt have it replaced at the dealership, i dont want to pay for the overhead of the showroom full of new, unproven vehicles which i will never buy... And i only buy vehicles at the time that it has a proven track record of reliability and specific knowledge about its maintenance is well known among local garages that charge reasonable rates.

The tow rating of 9300 pounds is somewhat disappointing, but thats not the idea of a 100 horse per liter engine anyway.

 

[BravoXray]

Why do diesel engine designers keep injuring the diesel engine with design flaws?

Because they have no responsibility for designing shitty engines and no incentives for designing good ones.
Change that practice and reward them for a good design and engines would get better pretty fast. But then manufactures don't want them to last too far beyond the warranty or they won't sell as many.