Why would an enigne chew through turbo's?...

[marek4792]

Not to bump the thread but to drive the point to make sure your injectors are in good order.
Took this turbo off last year during overhaul and replaced the offending injector that wasn't atomizing properly (white smoke when snapping throttle at idle). Moving stuff around and just today noticed it too had cracked like the manifold center sections before it.. Everything has been remedied since then..
   

[Rawze]

(09-28-2025 )marek4792 Wrote:  Not to bump the thread but to drive the point to make sure your injectors are in good order.
Took this turbo off last year during overhaul and replaced the offending injector that wasn't atomizing properly (white smoke when snapping throttle at idle). Moving stuff around and just today noticed it too had cracked like the manifold center sections before it.. Everything has been remedied since then..

is that is a Volvo truck? - That would explain a whole lot, as volvo trucks in particular do not have adequate air flow around the engine for higher HP power levels. the CAC is also restrictive, making the turbo work harder than other brand of trucks when bigger power is used on them.

[marek4792]

It is hence why I made the separate thread about trying to alleviate the intake restriction atleast on the cold side of things on common rail Volvos like mine. From what the guages are telling me, I think the boost can be brought down a notch seeing up to 32psi consistently under full load 1500+ rpm before it tapers down. EGT hovering just over 1000° whereas before I did the intake stuff was 1025-1050° Still running the 505 you sent me btw. It'll never be like the other brands, but just working with what I have.

[Shotgun74]

I got 1,060,000 out of my turbo in my 2012 Peterbilt 386 with the ISX cm2250. The first 714,000 miles were with the mandate. The remainder were after demandate. I've always believed in a cool down with all trucks I've driven.

(02-21-2025 )JimT Wrote:  What's the typical life expectancy of a turbo that HAS NOT been abused or obviously damaged as mentioned above? Same question for the actuators too. I'm specifically interested in the VGT for a cm2250, but would also be curious about other turbo's too. My turbo was replaced at some point before I bought the truck and I've logged over 400k miles personally. I haven't observed any indications that it's going bad, but I like to plan ahead whenever possible. The actuator appears original, but that too hasn't shown any signs of going bad, yet.