Can a turbo be bad if...

[Mitch D]

Talking to the guy who runs the machine shop in town and he said that he has seen where a new turbo will improve a tractors performance even if the current turbo is putting out the rated boost psi....
Don't make sense to me how that could be? Anyone have any insight on this?

 

[DENNIS MIN]

Mitch,

As little as I know, a bad turbo without significant blade damage, well, it could only leak oil, and perhaps have a bearing issue, which would cause leakage/ oil consumption/ lack of spool up/ or intake pressure.

I could be wrong on many counts, but a turbo has little that fails, and if it does, well the evidence is somewhat obvious.

I am not an expert.

D.

 

[kub6040]

A new turbo should spool up faster , if you are racing this maybe an advantage , farming it would likely be a waste of money.

 

[Bob]

"A new turbo should spool up faster"

HUH???
I wanna read the explanation to that!

 

[jr1983]

A new turbo will spool up faster. No carbon built up better condition bearings and since no contaminants its better balanced but difference is minimal.

 

[David G]

I would assume an older turbo would have some blade erosion causing loss of efficiency, but just guessing.

 

[4240 Turbo]

I had an old m&w kit on a tractor that made boost but wasreally slow to come on, like I had to throttle it up and when I set the plow down, it bogged, then slowly came in. I pulled the turbo, tore it down, and found that the shafts were very stopped up with carbon, and when cold it was not much drag, when warmed up it drug worse. It is hard to explain, but I would say yes, a "worn" or "old" turbo is possibly harming horsepower. Mine got new seals, new bearings, and no new shafts or wheels. It was a whole new animal afterward. Not saying that installing a new charger will drastically improve your performance, but it is possible that it could.

 

[tim s]

Different components wearing a little at a time add up to poor performance,worn turbo, worn injectors, pump, cam shaft, rings...these things take a small toll over time and you really don't notice it till you go through them with a comprehensive O/H..

 

[4240 Turbo]

Exactly. I agree totally. Valve wear, ring wear, cam lobe wear, lifter wear, turbo wear, cylinder wall wear, after each thing is say 3 or 4 horsepower, you have just left 20 or 30 horsepower on the table, which means your 4640 just became a 4450. The engine might not use much oil, might not smoke much, might not have much blow by, but after a closer look an old engine benefits from some new parts.