Asureyez
New Member
- Apr 22, 2007
- 1,535
- Boat Info
- Sea Ray 460 Sundancer Hardtop 2001 - SOLD
- Engines
- Cummins 450 Diesels
After coolers cool down the super hot compressed combustion air coming from the turbo to the cylinders. Cooled air further compresses the air pre combustion allowing for more bang for the buck.
IF the after coolers are fouled, the engine gets raw hotter air and but produces a leaner air to fuel mix. This means more carbon build up as seen in these turbos, higher exhaust temps as seen in the burnt vanes.
Peek inside the coolers and I'll bet a beer they are fouled with crude. Most common fouling can come from Airsep crankcase oil recovery system failure and blowing carbonized oil vapors and condensates in to the cooler.
These turbos may qualify to be rebuilt.
IF the after coolers are fouled, the engine gets raw hotter air and but produces a leaner air to fuel mix. This means more carbon build up as seen in these turbos, higher exhaust temps as seen in the burnt vanes.
Peek inside the coolers and I'll bet a beer they are fouled with crude. Most common fouling can come from Airsep crankcase oil recovery system failure and blowing carbonized oil vapors and condensates in to the cooler.
These turbos may qualify to be rebuilt.