There was recently a post on the FB Seneca group which incidentally talked about time in between overhaul for the turbos. My Seneca V turbos (in use on my TSIO360RB1B and LTSIO360RB1B engines), were last overhauled around 650 hours ago. There was some mention to expect OH around 700-800 hours.

Anyone have experience with turbos on a Seneca V (ie. the engines above) needing to be overhauled around that time frame...or....longer?

Also, what to watch for to indicate it's time for the overhaul. It was mentioned degradation of performance at altitude, but I'd like to know more.


1997 Seneca V
2300TT Mid-time Engines