300 HPDI on a 23' CC

[shine]

I searched and found a couple examples, but no performance figures. Looking for some numbers PLEASE. I am considering one of these motors for my boat.

Its a 2007 300 HPDI, BTW. I am familiar with the early model problems and the necessary updates. Will have a mechanic go through motor before purchasing

I know fuel burn would be A LOT more at trolling and idle, not to mention sound level (vs my old F225), but from what I can tell off other boats the cruise burn will be maybe 12 gph at 33+ mph, my best F225 was somewhere around 8 gph at 26-27 mph. I dont mind burning 30% more fuel to go 25% faster.

Also looking at a new 300 Suzuki, but dropping $20k on a motor is not somethign Im excited about unless I decide to keep this boat for a long, long time.

Any info is appreciated.

[mrobertson]

Definitely intriguing depending on the price.

I'm probably wrong, but i think that engine comes close to 800 pounds. My F250 4 stroke weighs 608 Dry.

The boat can surely handle the HP but at what cost? One things for sure, she will probably move pretty good with that 300. I've touched 47 in mine with the 250.

[Bigshrimpin]

300hpdi is listed at 539lbs . . . it's lighter than the F225/250 but a bit. I've mounted both on boats with the yankee hoist and the 300hpdi seems significantly lighter than the F225/250. The 800+lb yamaha is the F350.

[shine]

its actually a hair lighter than my old F225

[mrobertson]

That being said - personally i'd be stoked to be dropping that powerplant on the back.

[caboman22]

Hey guys...I'm new on here..Good info. My uncle has a 1998 23cc and just had a new E-tec 300 30" installed on her and said he's getting top end around 49mph. Not sure of fuel burn. I'm doing my research now for engines. I'm about to start the restoration on my 1974 Potter 23CC and looking at 350 verado, 300 verado, 300 optimax. Raising transom to 30" I have read a lot of great post on here. Both boats are from south Jersey. Good luck!

[FishStretcher]

Originally Posted by shine

I searched and found a couple examples, but no performance figures. Looking for some numbers PLEASE. I am considering one of these motors for my boat.

Its a 2007 300 HPDI, BTW. I am familiar with the early model problems and the necessary updates. Will have a mechanic go through motor before purchasing

I know fuel burn would be A LOT more at trolling and idle, not to mention sound level (vs my old F225), but from what I can tell off other boats the cruise burn will be maybe 12 gph at 33+ mph, my best F225 was somewhere around 8 gph at 26-27 mph. I dont mind burning 30% more fuel to go 25% faster.

Also looking at a new 300 Suzuki, but dropping $20k on a motor is not somethign Im excited about unless I decide to keep this boat for a long, long time.

Any info is appreciated.

My math says 50% more fuel for 22-25% faster. 8GPH x 150% is 12 GPH. So it isn't quite without a penalty. But not terrible.

[77SceptreOB]

Originally Posted by FishStretcher

8GPH x 150% is 12 GPH.

8 GPH cruise on a 23' is exceptional, regardless of speed, when using an outboard. Very hard to achieve that even with a new 4 stroke. I would venture to say that average fuel usage at cruising speed is closer to 10-12 GPH for most 23' rigs (like mine) and should be used for comparison purposes...

[shine]

8 GPH cruise on a 23' is exceptional, regardless of speed, when using an outboard.

I know, and really lightly loaded and barely on plane I could get lower than that ! That F225 was a great motor for a LIGHT 23'

[Abe's Rocket]

I can cruise at about 9gph with a my 250 etec.

WOT i'm burning 23gph and hitting around 44-to-45mph. I'm surprised that a 300hp etc doesn't go right past 50mph.