The Perkins 4cyl diesel in my Creighton has packed up (suspected fuel pump), due to it being a large engine in a small engine bay, it's bloody awkward to work on and it looks like im going to have to lift the engine out to do the pump.
This got me thinking - maintenance on the engine is damn near impossible, and firing up a 40hp engine to move at 4mph seems a ridiculous waste of a big engine, so why not replace the engine with a 13hp single cylinder petrol honda general purpose engine? Transmission would be through twin A section V belts onto the current velvet drive gearbox. I'd be using a 4 groove pulley at the engine end, and should be able to run a 100A alternator at the same time as propulsion, but use an idller pulley to take tension off the alternator if required. The 4th groove on the pulley would be a spare, possibly used to run a pressure washer/water pump/second alternator through a similar tensioning clutch.
The engine could be lifted out and worked on by me on my own, it would free up a large space in the engine bay (to store coal, with a shovel hatch inside the front cabin) and it opens up easy opportunities for engine swaps in the future and would also allow me to use my 5.5hp genset engine (that has spare pulley grooves) to propel the boat in an emergency, i could easily make it up to be swapped in under 20mins.
Is there any reason that the BSS won't allow me a fuel swap? Can anyone think of any reasons why my plan wouldn't work?
Cheers for any advice
Mark