i suspect that my stock turbo has started to pack it in. last week while driving into the bush for work i noticed a peculiar smell inside the truck. when i got to camp to start my 2 weeks of work i popped the hood and noticed that the rubber piece joining the afe intake tube to the inlet on the turbo was all melted and the housing on the intake side is now a shade of orange. so i found a piece of 4" coolant hose to put in its place (that all we have at the rig) just to hopefully get me out of the bush and hopefully home next week. so the truck runs fine right now and i have removed all power adders has anyone out there run into this problem with the stock turbo and do you think i can limp it home(500kms) running as little boost possible?? i don't want it to explode and send pieces into the intake side of the motor and ruin the engine.

 

hmm..... never had one melt and intake before. is there any play in the turbo?

 

The old piece probably collapsed shut on ya from old age.

 

check for anyu play if their is then i would say no

 

there is around 1/16th side to side , and the housing is now a slight orange colour. so if there is play in the shaft it might be ok? did i read that right?

 

no if it has enough play to touch sides of the housing it will not be ok

 

There will be some movement. There is a spec for it as well, but I forget what it is. the big thing is it obviously can't touch the side. As far as the discoloration, there are plenty of turbos that seem to have it. i think there was some kind of coating that was sprayed on them. I have a friend who bought his truck with 20miles on it a couple years ago and the turbo looked like it had gotten really hot because we saw that color. So the dealership showed us 3 others that looked just like it. now he has over 100,000 on that turbo.
That is strange the intake hose melted though so there was some heat issue.

 

I'm thinking the oil supply to the turbo may have failed and it over heated.
I had a turbo fry on a JD tractor when the oil return line somehow got kinked.

 

definately has play but the compressor wheel isn't touching the housing anywhere and the fins are all in good shape.. but the discolouration is definately new to the housing, it had heat from somewhere to melt the rubber. it might just have something to do with the oil line. but i am in the bush working and will have to try to limp it out of here on wednesday afternoon,, no choice..!! in stock form in the past the egt's can easily climb to 1450+ so as long as it gets home, it will be time for a new one.. any suggestions to a quick spooling single that keeps the egt,s down?

 

If you have been running it at 1,450 degrees F on a routine basis, pull your turbo drain line adapter from the turbo bearing housing and clean the coke out of the return hole.

These turbos do not have enough oil flow on the trucks made since 2003 to handle moving that much heat without plugging the drain with coke from cooked oil.

 

thanks for the replies.. will be taking the truck to the rig tomorrow and pulling the drain line to see what's what

 

ya that isn't the problem