Was it the exhaust turbine that came apart or the air side impeller?
Perhaps the turbo is slobbering when cold, my Saviem/Mack did that, white smoke. Cleared at temperature.
Question to large turbo experts. If I increase RPM up to 2000 while in neutral is there enough exhaust pressure between the turbo and the elbow to check for a leak?
The yard can't seem to find the energy to get involved to complete this thing and I'm ready to kill them. You'd think they'd want to get paid.
I'm to the point where I need to deal with these items myself and get my boat the hell out of there before i get arrested for assault (or worse).
If I increase RPM up to 2000 while in neutral is there enough exhaust pressure between the turbo and the elbow to check for a leak?
Turbo's generally do not develop positive pressure unless under load...Reving in neutral will not accomplish that.
My observations from years of experience with Audi gas Turbos and VW Diesel turbos with accurate boost gauges..
I can understand this on turbocharged car and truck engines as they would have a by-pass of some kind to get rid of unwanted boost pressure. Is a bypass or waste-gate a normal feature on turbo marine diesels?
On my Cummins with boost gauges there is no pressure until the engine is in gear and rpm up to about 1400. Out of gear no pressure no matter the rpm.
On my Cummins with boost gauges there is no pressure until the engine is in gear and rpm up to about 1400. Out of gear no pressure no matter the rpm.
No need in a marine application as there is no rapid change in throttling in high torque ranges, and most are very low pressure systems..A few PSI maybe, where cars I've owned have approached 25PSI
I asked as I was seriously interested in an older Hatteras that had 8v92TI's in FL and one engine surveyor told me he was now refusing to survey the TI engines as the salt water can corrode things to the point the salt gets into the engines. Might survey great one day and engine ruined a week later and the buyer comes complaining to surveyor about not catching the issue.On the turbo 6-71 the air charge is being cooled between the turbocharger and the blower, thus all are intercooled (TI).
At least on the TA versions the salt water is cooling fresh water so not as risky to core engine components. Having said that, if OP's boat always in fresh water not likely the issue.