BubbaFrsh
Member
With all the talk about dropping valves on an overloaded engine, I finally decided to get the monkey off my back. I am in the process of changing out the heads on my 480 CE's.
The boat was unknowingly overloaded when we first purchased it with 85 hours on it. Then I ran it a couple years overloaded, until I started to read up on Tony Athen's website. When I look back at some of my notes, I think I was running it pretty hard. I currently have about 657 hours on the boat.
I have already taken 2 inches of pitch out of the propellers. That gets me real close to the fuel burn numbers Tony recommends, depending on the load and condition of the bottom. So I feel I will be in good shape once the repairs are complete. Apparently there is a service bulletin out by Cummins that talks about a better designed head, which is what I am using.
The estimate is in the 11.5-12k range for both engines, and I felt it is far cheaper than the rebuild of a single engine with a dropped valve.
It hurts to see your favorite toy torn apart, but I feel this is better in the long run.
Matt
The boat was unknowingly overloaded when we first purchased it with 85 hours on it. Then I ran it a couple years overloaded, until I started to read up on Tony Athen's website. When I look back at some of my notes, I think I was running it pretty hard. I currently have about 657 hours on the boat.
I have already taken 2 inches of pitch out of the propellers. That gets me real close to the fuel burn numbers Tony recommends, depending on the load and condition of the bottom. So I feel I will be in good shape once the repairs are complete. Apparently there is a service bulletin out by Cummins that talks about a better designed head, which is what I am using.
The estimate is in the 11.5-12k range for both engines, and I felt it is far cheaper than the rebuild of a single engine with a dropped valve.
It hurts to see your favorite toy torn apart, but I feel this is better in the long run.
Matt