6.2 going to 300,000 miles

[84CUCV]

I know a few guys with 6.2 with a lot of miles on them. on my stock cucv is there any tricks or something to give the little diesel a long life. i know a few things that i was told, but not much. what do you guys do?

also, my friends M1028 was just put back on the road. soon after the injection pump went. so we did the pump and injectors why we were at it. we both feel that there is more power. it that what always happens? not like it puts you into the seat, but it does feel like there is more there.

thanks

 

[imiceman44]

I know a few guys with 6.2 with a lot of miles on them. on my stock cucv is there any tricks or something to give the little diesel a long life. i know a few things that i was told, but not much. what do you guys do?

also, my friends M1028 was just put back on the road. soon after the injection pump went. so we did the pump and injectors why we were at it. we both feel that there is more power. it that what always happens? not like it puts you into the seat, but it does feel like there is more there.

thanks

When the pump and injectors are not working properly it's like a carb that is not adjusted properly, you will not get good performance so after you got them rebuilt, you should feel a difference.
As for taking care of the diesel for long life, nothing like changing the oil often.
And don't push it too hard use your torque.

 

[Goose]

I've heard a leading cause or suspected cause of engine failure is the harmonic dampner going bad. Specifically the rubber part of it getting too hard or soft. I know it's a little vauge, but check yours out. If it looks like it's deteriorated it may be time for a new one.

Also, the ultra low sulfur diesel is supposed to be hard on injection pumps because it doesn't lubricate as well. I'd add a good diesel fuel treatment to each tank.

I'm a newby at diesel's, but this is some of what I've heard so far.

 

[86dieselburb]

I've got 350+ on my 86 6.2. I just change the oil every 3,000 with Delo and change the fuel filter at the same time. The pump and injectors were rebuilt at 150K. I also put in cetane/injector cleaner every other tank. Still runs good.

 

[4by4bygod]

I know a few guys with 6.2 with a lot of miles on them. on my stock cucv is there any tricks or something to give the little diesel a long life. i know a few things that i was told, but not much. what do you guys do?

The ability to give diesels a long & happy life is the whole reason I'm a vendor here..granted, you can go to 300,000 miles without us, but the question is, what kind of performance are you going to have at that mileage level.. if your only goal is to make it that far without blowing up, then fine.. but if you want to live in a world of raised performance expectations, (like our customers do ) then we should talk..

[ shameless self - promotion / off ]

 

[CumminsChick]

mine has 545xxx on her! NO JOKE, had 3xxxxx on her when i bought her and i drive her EVERYwhere... they are reliable as heck but darn slow

 

[84CUCV]

thanks for the replys. is it true a turbo 6.2 will have a bit less life?

 

[imiceman44]

thanks for the replys. is it true a turbo 6.2 will have a bit less life?

Quite a bit, because they were not built to be turboed.

 

[CumminsChick]

mines proudly Naturally Aspirated! =)

 

[84CUCV]

i have seven that are still Naturally Aspirated

 

[84CUCV]

come to think of it. i never thought there was anyway a 6.2 would last to 500k. wow......

 

[CumminsChick]

come to think of it. i never thought there was anyway a 6.2 would last to 500k. wow......

she is the most reliable thing i've ever owned (i say that and today... lol) she just has to make it till may and i then she'll be replaced by a cummins...so hopefully i can keep on truckn w her till then...i keep good care of it but still have fun.

i actually know of a buncha 6.2l lasting at least that

b

 

[bavarian_blazer]

554 k wow!!! 6.2s rock... if they just had a more power the would rock even more

Greetings

Flo

 

[84CUCV]

wow..... good to hear. what did you do to get to 500k?? or just basic stuff?

 

[BKinzey]

Quite a bit, because they were not built to be turboed.

Quite a bit? So do you think that follows with the turboed 6.5? Let's say you have the last year of the 6.2, a first year 6.5 turbo and a 6.5 turbo you put together with longevity in mind. AMG block, remote PMD, and all the upgrades GM made.

Oh this is getting silly I'm contemplating if 18:1 pistons would be more of a power upgrade or since compression is lower it could be a longevity plus Then you are going to take these supposed engines and give a theoretical but not practical answer

Forget that crap!

Why do you say "quite a bit"?

 

[imiceman44]

Quite a bit? So do you think that follows with the turboed 6.5? Let's say you have the last year of the 6.2, a first year 6.5 turbo and a 6.5 turbo you put together with longevity in mind. AMG block, remote PMD, and all the upgrades GM made.

Oh this is getting silly I'm contemplating if 18:1 pistons would be more of a power upgrade or since compression is lower it could be a longevity plus Then you are going to take these supposed engines and give a theoretical but not practical answer

Forget that crap!

Why do you say "quite a bit"?

As you know I only use technical terms: like quite a bit, which means substantially, or a lot.
You do know that a 22.5:1 compression is already high and when you pump it up with a turbo, you are already pushing the limits and since most people do that to get the extra power they want to use it so they push the engine beyond the safe margin and most times don't maintain the engine properly so there you go, quite a bit.
Now I have seen some engines with a turbo and still got 300k miles but the owners were out of the ordinary people that did good maintenance and used the truck carefully watching EGT's and did not overwork the engine.

 

[6.2Blazer]

As you know I only use technical terms: like quite a bit, which means substantially, or a lot.
You do know that a 22.5:1 compression is already high and when you pump it up with a turbo, you are already pushing the limits and since most people do that to get the extra power they want to use it so they push the engine beyond the safe margin and most times don't maintain the engine properly so there you go, quite a bit.
Now I have seen some engines with a turbo and still got 300k miles but the owners were out of the ordinary people that did good maintenance and used the truck carefully watching EGT's and did not overwork the engine.

I know what you mean. Putting headers on a gas engine also causes quite a bit less miles before the engine is worn out. I say this because I know a guy who put headers on his engine and it blew up 10,000 miles later, so obviously it was the headers fault. I don't think the oil was ever changed, and it was never tuned up, and was always run really hard, but I'm sure that did not play any role...definitely just because of the headers.