Foretravel Owners' Forum For owners and Fans of Foretravel Motorcoaches September 10, 2025 ...

From the looks of your impeller, you have had something upstream come apart to cause that damage. The impellers don't wear out looking like that.

After pulling turbo found this.

From the looks of your impeller, you have had something upstream come apart to cause that damage. The impellers don't wear out looking like that.

Wow Mike, that is shockingly catastrophic, but perhaps repairable.  What is the history of your coach and what engine/coach do you have?  Not in your sig or profile. 

If turbo gasket(s) fail, it can cause some level of performance degradation, but shouldn't cause that kind of impeller damage.  That damage looks like something metallic was introduced into the intake.  Woody.

If the damage is to the compressor side, where would that gasket go? That gasket looks like it goes on the turbine side from manifold to turbo.

You are right
There would be no contact from that gasket to the intake side of the turbo. The missing piece would have gone through the exhaust impeller out the exhaust pipe.

You are right
There would be no contact from that gasket to the intake side of the turbo. The missing piece would have gone through the exhaust impeller out the exhaust pipe.

Mike That gasket is on the Exhaust side of the turbo. the old piece would have passed through the exhaust turbine and entered the exhaust pipe if in fact it did. Sometimes they split and just work their way out and fall to the . Your Damage is on the Intake side turbine.,That mounting gasket would in No Way have caused the damage on the intake impeller. Something sucked into it from the air filters back. I/E filters not filtering good,Trash in intake piping,etc inspect very carefully and make sure the correct air filter is even installed. That can happen also someone can replace an air filter with the wrong one ,possible to short or faulty gasket and cause these type issues.

What I would be worried about is where did those pieces of the turbo go. Are the hung up on the intake of the after cooler or did they
go through the engine.

Those pieces eroded and entered the charge air cooler. The impeller did not explode like most do, Lucky on that. But the small pieces either traveled into the CAC and were trapped or completly passed through and ingested inside the cylinders. My guess is they entered Cac and lodged not causing a concern or flakes so small they were ingested in the cylinders and either vaporized on combustion or just were spit out exhaust.  THE Intake impeller was being fed debris plain and simple  no other cause.    Look backwards from turbo at air supply system ,I,/E Filters and turbo feed tubing.jmo

Depends on if you buy a new Cat turbo or a reman,not sure other then what you stated he means by tighter,the same parts go in them either way.