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Random Quote: I sailed the sea to see the sea! You know what I saw? I saw the sea!
What do y'all think about replacing twin 225's with a single 300 zuke or 350 yamaha on a wahoo 2600cc boat? Right now the boat will run 57 mph WOT, and cruises 33 mph at 3300 rpm. I would like to drop back to a single engine that would provide a cruise around 30 mph and not be underpowered. Top speed is not of much importance to me since my back is bad and my wallet is thin. Am I going down the wrong road or not? Thanks for the help!
I dont know how you are able to manage 33mph @ 3300rpm with twin 225s on a 26CC if you are propped correctly.
This is quite subjective but IMO if you venture offshore you need twins; not so much for performance but for safety.
Nevertheless, a single 300 or 350 should be able to push a 26CC at around 28mph @ 4000rpm when propped to peak close to 6000rpm
I don't think this is a great idea, but if you must I would definitely go with the F350. You are not only losing a lot of HP, you are losing a lot of blade area going to a single engine.
TopCat, do you think I may be overpropped with my setup? It jumps out of the hole and really I feel like it could use a little less prop to get less speed with the same rpm's. The engines actually sound like they are not at their most efficient running speed when turning anything less than 3500 rpm. Most days the ocean won't let me do more than 35 mph, especially on the way out into the gulf of mexico.
the F350 is out...too heavy and too thirsty....not for this app..the 350 is a big boat motor..like the verado it's not a "repower" motor
1st choice - a tie - a 300 opti or the new 300 etec
2nd choice - a 300 zuke - new rigging needed for dig shift...
3rd choice - a 300 verado but will cost a lot more than the zuke...
I think the F350 would be a great choice.
Weight is about the same as the twins you currently have. I think it is one of Yamahas target markets, replacing twins with singles. Regulator is rigging the 26, and Grady is rigging the 275 with the F350 with pretty good sucess. Go to Yams website and look at some of the performance reports for comprables to you 26 Wahoo.
I bet the 300 Suzy would be adequate as well.
The only thing I would be concerned about going from twins to singles on a 26 foot boat is whether that single outboard is going to have enough propeller surface area to carry the hull well. Most of the single engine I/O powered 26 foot boats have a duo prop type drive which provides near twin outboard propeller surface area on a single propeller shaft. Much better bite.
Docking a 26 foot boat with a single outboard with single conventional prop riding relatively high in the water and no bow thruster could be a real PIA in any situation where there is a bit of wind and/or current.
Not sure what your boat weighs but here is a thread on a 2550 Bluewater( repower/power) with a 300 Suzuki. The Bluewater 25 is a big boat. I'm having a 300 installed on my 25 Seacraft now and hope to get the same numbers. There have been several threads on this. Do a search for DF 300. http://www.thehulltruth.com/forums/t...ode=1#M1931246
Also check the Suzuki performance report on a 26 Key West.
TopCat, do you think I may be overpropped with my setup? It jumps out of the hole and really I feel like it could use a little less prop to get less speed with the same rpm's. The engines actually sound like they are not at their most efficient running speed when turning anything less than 3500 rpm. Most days the ocean won't let me do more than 35 mph, especially on the way out into the gulf of mexico.
It seems so. Reasons maybe wrong pitch and wrong cup. I would expect that for your boat the correct pitch would be either 19 or 21 for the Yamaha Saltwater props which I assume you are running. The engines should WOT at 5700 - 6000rpm. Wait for a calm day and try it out; tilt the engines as far up they go without ventilating and load the boat the way you normally operate it.
You need to lower the pitch to raise the wot rpm. Best thing to do, if you find your wot rpm is not per spec, is to talk to a reputable prop shop and they will find the best pitch and cup for your application.
Another thing to do is to consult the Yamaha Performance stats at the Yamaha website. Find a boat similar to yours and get an idea where you should expect to be. Be aware its not an exact science as each boat is different. Although, you will be hard pressed to find another 26CC doing 33mph at 3300rpm with the F225s.
Another setup to consider, if the 225's are too much engine for what you want to do with the boat, is twin 150s; although I would personally exhaust all avenues with the 225s before taking them off the boat.
Either the Yamaha F350 or the new F300 would be excellent choices. Either one will weigh significantly less than the 225s on there now so the comment above about the F350 weighing too much is nonsense.
If you boat cruises now at 33 MPH at 3300 RPM that sounds right to me and tells me you are running 21" pitch props through 1.86:1 gearing, a perfectly normal set up.
Nobody repowers an outboard powered boat to save money, so give up that nominal reasoning. The most economical thing you can do is maintain the power you have now until it dies. There are lots of other reasons why you might want to repower so focus on what you are really trying to achieve.
I think the DF300 would also be an excellent choice as well.
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And the f300 is a joke...period
We'll see what marketplace says about that. Like Rumpelstiltskin, you can stamp your foot up and down in a rage as much as you want but you'll only end up making a big hole for yourself.
oh please tom...save it....walked the whole show yesterday, and saw no f300's mounted on any boat...2 mfrs that mount yam say they have no idea why yam did it....no demand for an 800 lb...300...
That's fine Glen. We'll see. If what you say is true, then Yamaha will not sell any F300s. Time will tell...and I suspect if will tell us you are very wrong.
That's fine Glen. We'll see. If what you say is true, then Yamaha will not sell any F300s. Time will tell...and I suspect if will tell us you are very wrong.
so tell me tom... why would anyone by a dumbed down Y300 that weighs what a 350 does?... which is 200 lbs more than the Zuke or Verado or WAY more than your fav motor, the E300?...humor me...show me a situation that the Y300 fits....
so hows that corner you just backed into .... a little tight?
You are dead on the money with my props Mr. Tom. Really the reason I am thinking about repowering is that I am tired of working on the engines all the time. It seems that I am in the nickel and dime stage with them and all I do is fiddle with minor engine related stuff on the weekends instead of fishing. You are right, though. You can burn a LOT of gas even at 3.50/gallon before justifying the cost of a new motor. The motors actually run like sewing machines, but its the trim motors or something like that all the time to be replaced. A shiny new motor on back would just give me warmer, fuzzier feelings about my boat I suppose. Now you two be nice to each other
single 300 zuke vs 350 yammie on 26cc??
