Question about engine for 23 cc? Need help.

[twofinbluna]

more hp= less strain on the motor to keep the boat up on plane and probably better fuel economy as well- I have 260 in my boat as well- efi will mean even better cruise than carbed. i am turning and 1 1/4 shaft and it is fine- good luck !

Thanks for that......what kind of engine do you have? Is it a diesel? What make? Thanks in advance.

[ericminnig]

my motor is gas with 325 hp. I turn a 1 1/4 shaft. I have not seen a diesel with a 1 1/4 shaft ever. (not that i've been looking either). It's a torque issue with diesel, I would go with the bigger shaft just to be safe which ever motor you go with. good luck. I wish i was wondering which diesel i was putting in my boat.

[Miles Offshore]

no, mine is gas but originally was a diesel, i dont know the specifics on the original diesel 30 years ago but i am fairly certian neither the shaft or any of the running gear have been changed. the weight to power ratios in diesels are needless to say much better now though!!!!

[Gary Hill]

Three year's ago I repowered with a Marine Power (From Jersey, but are all over), with a 315 Carb motor, since I could repair maybe and if you look at the spec's for a carb motor it is rated t 315 @ 4600 RPM and the fuel injected is/was 330 @ 4800 RPM, go figure that out. I do have a 1 1/4 shaft. Look at the older post for fuel econmy everone gets. I like the extra power on the hole shot over the 233 HP MERC I had before and the fuel econmy went up some, but these boats will like fuel.