Diesel or Gas?

I`ll use yesterdays ride back from Block to Mystic as my contribution to back up Abalmuths point on the advantages of the diesels handling.
It was typical conditions for that run, long following rollers that you are climbing and crossing at a slight angle. Back in the day of my small propped high revving gasboat the run was a pita, I hated it, constantly pushing the throttles to get over the wave then backing way off to slow down on the other side. Yesterday, on the other hand was a pleasure, set the throttles and steer your course. The boat didn`t vary 5 mph from the back of the wave to the front.
 
I know over the years that this subject ahs been beat to death and reading up on the issue at places like yachtsurvey and the like it appears that there is some tipping point where the preference for gas vs. diesel comes into play (seems to be at or around 30 ft or so). With that being said (and forgive me if this was already stated and I missed it) with moderate useage, what is the amount of time you would expect to get out of a diesel between overhauls as compared to a gas engine ? And does the time in between overhauls decrease with engine age ?
 
There are just way too many variables to answer that question, beyond something like "anywhere between 1,000 and 10,000". If it is a real overhaul, the engine should meet new engine specifications and be eligible to be set back to 0 hours.
 
David Pascoe's statement on this is that anything over 16,000 lbs/engine is time to go diesel. Although it is probably a useful rule, it seems a bit simplistic.

Not a lot of people here like D. Pascoe.
 
quote:
Originally posted by RickB

David Pascoe's statement on this is that anything over 16,000 lbs/engine is time to go diesel. Although it is probably a useful rule, it seems a bit simplistic.

Not a lot of people here like D. Pascoe.

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Yes, I have been on here for many years and I get that impression too.... not exactly sure why, he's blunt but I prefer detailed experienced, opinions... blunt or not, but thats just me.
 
Sorry I think Pascoe might have been good in his hayday as in a decade ago. My current opinion, he is a grumpy old man with an agenda. Technology has passed him by. I would take our own Al Prisco's professional educated survey over Pacoe's opinion's.
Bill
 
There is no simple answer to how long an engine will last. How hard an engine is run determines how long it will last barring the more frequent lack of maintenance or poor installation causes of failure.

How powerful the engine is doesn’t matter much. Taka a 60 HPper liter engine and run it mostly at 30HP per liter and it will last as long as one rated for 30HPper liter. That also points to the fuel used data as a primary indicator of wear.
 
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