turbo warranty

[ripp_jr]

just wondering i got my entire engine replaced in september by volvo my turbo just went out today before i get into a arguement do any of you think that the turbo has a warrenty on it it a cummins engine if need to no :shock:

[GMAN]

The turbo warrany is separate from the engine. The last turbo I replaced I believe had a 150,000 mile warranty.

What happens when your turbo goes? Is that the end and you just sit or can you finish a load? How much does it cost to replace a turbo or can it be rebuilt?

[GMAN]

I should cost between $1,200-1,800 to replace the turbo. It has been several years ago but I believe I paid somewhere around $1,200 for the last turbo I replaced. According to the shop who replaced my turbo, most fail due to not changing the oil at regular intervals. When the oil loses it's viscosity then it doesn't properly lubricate the bearings in the turbo. The lack of lubrication will cause the bearings to overheat due to friction and fail. Changing your air filter will also help keep dirt and grit out of your turbo. Almost anything on the truck can be rebuilt.

[solo379]

What happens when your turbo goes?

You stop ASAP! Unless you want to risk your entire engine! :wink:

[Jackrabbit379]

What happens when your turbo goes?

It stops whistling. :P

[Foghorn]

Isn't a turbo warranty one that stops covering things faster than a regular warranty?

[allan5oh]

Oil doesn't lose much viscosity, actually if you don't change your oil and it loads up with soot, viscosity goes up.

I think the biggest thing is to make sure your EGT's are cool enough before shutting it down. This doesn't mean you have to idle it for 10 minutes, but on a hot day or just after going up a big hill, it pays to pay attention.

[GMAN]

What happens when your turbo goes? Is that the end and you just sit or can you finish a load?

When a turbo blows you will know it. You should notice a drop in power and a LOT of smoke behind you coming from your stack. If you have your CB on you will probably notice a lot of chatter and profanity about the guy who blew his turbo and that they can't see for all the smoke. You need to find a place to stop ASAP. If you continue driving with a blown turbo then you could do more damage.

[allan5oh]

I know one guy that blew a turbo on an m11. It was different from the usual.

He said the turbo went off like a shotgun. Sure enough, the compressor wheel actually broke in half. Then the engine started sucking in all the oil.

Diesel engines run REAL nice off engine oil. The truck took off like a bat outta hell.

Then he pushed in the clutch, and it revved to 3000 rpms until the engine blew.

[solo379]

Were there any US Marshals around, to confirm the story? :P

[Teal 95 KW]

I haven't blown a turbo, but going across wyoming when I still had my w900 I was pulling a grade and then it sounded like a loud bang and the truck fell on its face....NO power....hit the shoulder and one of the band clamps that holds the ducting to/from the turbo came off...

[Bandit102]

More often than not, turbos do not simply seize. The shaft breaks and the engine starts drinking oil. Yes, they do take off like a bat out of hell sucking oil. They won't shut off with the key either. You get lots and lots of smoke and absolutely NO power. None.

Prices of rebuilt turbos are BS and ridiculous. I have rebuilt many many turbos for $200 or less. Most are less. People will pitch crap at you about they have to be perfectly balanced, which they do. But when all the parts are zero balanced anyway, well, that's pretty simple.

[Bandit102]

Oh, by the way, yes, they will seize if you shut the engine down with the turbo still hot. Oil doesn't hang out very long in a 500 degree environment. When you shut the engine off, the turbo continues to spin for a short while. The oil runs away from it and you have parts spinning dry. Bad deal. If this practice is continued, yeah, she'll seize.

800 Degrees exhaust temp. (on your pyro) equals quite a bit higher actual turbine temperature and much higher pre-turbo exhaust temperature.

More often than not, turbos do not simply seize. The shaft breaks and the engine starts drinking oil. Yes, they do take off like a bat out of hell sucking oil. They won't shut off with the key either. You get lots and lots of smoke and absolutely NO power. None.

Prices of rebuilt turbos are BS and ridiculous. I have rebuilt many many turbos for $200 or less. Most are less. People will pitch crap at you about they have to be perfectly balanced, which they do. But when all the parts are zero balanced anyway, well, that's pretty simple.

This just may be stupidity on my part and i am not asking to be a smart a** just out of sheer curiosity...but how does it take off like a bat out of hell but you have NO power? Does it just take of when burning that oil but no reaction on the pedal or what...seems like if it takes off like crazy it is pumping some power....I am not even close to being a mechaninc so please explain this to me.

[Bandit102]

Diesel engines burn engine oil quite well. The oil supply to the turbo, mostly on older, non intercooled engines, gives the engine a basically unregulated fuel source. They will not pull a load this way, but once out of gear or with the clutch in, they run away. On today's intercooled engines, I would think that the engine would run itself out of oil before it filled the intercooler and actually started taking oil in to the engine, I'm not sure though. I've not lost one myself.

With no manifold pressure (no turbo) your engine will develop very little power. The huge amounts of black smoke come from fuel measured for the air that should be present from the turbo but is not. Exhaust temperatures also go very very high when you lose boost.