250 SHO yamaha on a 23 SF
 

I am on the verge of repowering my 23 SF I have a deal on a few 250 yamahas, new 4.2 only...love my current 250 ox66, but its been giving me problems.checking weights on yamaha vs suzuki. looks like the yamis sho is 505 lbs and throws 271 hp at the prop.my boat is a 30" transom, so ....modifications to the lower are needed to make it work for me, thats OK.not a huge deal.. I am not concerned about fuel consumption at what RPMs....what does a 250 zuke weigh and HP at the prop?lets hear what it is, hope some one knows ,VS a 4.2 yams,250,standard or a SHO....

http://www.boat-fuel-economy.com/fue...ion-calculator
rough data on the question you are NOT concerned about. ooops

30" motor is 659 lbs for the AP.

Looking at the Yamaha web site, I assume the VF250XA is the 25" shaft and it's 555# so add 20# or so for an extension to 30". Note this is dry weight. Was wondering where you saw the 271 HP number? Yamaha has always been on the low side of the 10% "cushion" for HP ratings. The early 3.3 225s were on a good day 208 HP.

For the same or less money you can get a 300ap in a 30" shaft. You certainly pay for grey but they are good motors.

i was thinking about it for a while, but couldn't figure out what AP stands for?I too was thinking 300,not sure if I need it.250 was about 600 less for me.

on the weight , i was looking at yamahas 2017 product information guide [pig] they give to their dealers.our yamaha master tech told me about the hp at the prop,I thought it sounded good.the 30" lower could end up near 20lbs,with the 5'' extension plate and the driveshaft.but being a yamaha dealer I can get really good pricing on 0 hour demo engines and scratch n dent stuff.If I didn't have this yamaha connection,I would go with suzuki...another excellent engine

"I can get really good pricing on 0 hour demo engines and scratch n dent stuff"

This is where money talks, and........you know the rest!! :)

Gonna have to change your handle to FAST! 300 Yikes!

Fas,
The Yamaha Sho motor is an awesome piece of equiment... However, data states that the Yamaha F250 puts out the same ponies as the SHO around 270 while the 300 is a weak 300 at around 280. If it were me.. there is a huge price difference between a F250 and the 250 SHO. If memory serves me right about 3 or 4 k...

My Yamaha dealer here local loves to Pimp and Sell the SHO but his head Mechanic Laughes his ass off because less tha 1mph diff between the SHO and F250 and the F300 Is like 1.3 MPH faster than the F250.

Hope that helps... Or just Spend the DOUGH and grab a 225 Verado and a huge discount... then Call Simon Motorsports send in your PCM... which they flash and you have an Instant Verado 325 HP. Cost $895 and takes 5 days.

I know it works.. I sold the Shitty 2011 300 ZUKE off my boat and just bolted up a 2009 225 Verado. Bumped up the PCM after running it as a 225... and i picked up almost 10 MPH and bumped 2 pitch sizes i prop.

Don't discount the Verado.. the 225 to 350 all use same Block Porting everything.. Nothing more than a PCM Flash... Just my 2 Cents.

If you're not down with the V-ROD i would say Yamaha F250.

Robert

Rob, What kind of performance #s are you getting on your V-Rod powered Scepter? It would be interesting to see how they compare to what I and others are getting.

Ken,
Right now i have a worked Powertech OFS 4 blade has some extra cup in it and its a 18p. Top End is 56 mph with a cruise of 4000 RPM's i am getting 37 mph burning 11 GPH. If i run much over 4000 the Gas Really dumps.

I tried to prop this for max cruising potential so monkey around with the engine height a lot and then propping. I don't have enough time on it yet to make all the tweaks.

Be taking it to the Coast in about 4 weeks..

Also keep in mind that is with the Simon Motorsports PCM Flash. I will say the Power curve delivery is way better with the simon mapping that merc ever thought it would be and a Hell of a lot more Torque across the band.

Also i am still waiting to find a 17p Rev-4 Prop turn it then send it off and get it worked as well and see if it will do better. I mean the numbers are great but i think there is still room for improvement.

Robert

I noticed while looking at the 300 and 350 verados they want you to burn the higher octane gas (hint, hint) for "premium performance".....

"Unleaded Regular 87 Octane Minimum (R+M)/2 or 91 RON Unleaded 91 Octane or 95 RON for premium performance in all conditions 10% Ethanol Maximum"

Are you running the 87 octane or did you move up in $$$ and buy the expensive stuff? I see a lot of Rec90 for sale at marinas but not too much 95 RON.

Don,
My understanding is the 350 wants 91 OCT... and 200 to 300 can run on 87 but makes a little more power on better gas. I am a knucklehead who always runs 91 regardless... Ran it in all 3 of my verados, my 225 EFI my 250 OX66, more of an added insurance. Since my Tsunami is a Trailer Queen It doesnt rip my pocket book to hard at the Real Pump. Plus i am Uber religious about pre-emptive maintenance... Change oil on the V-rod ever 75 hours, new plugs at Cough Cough $11 each, Fuel filters on the Engine as well as the Racor.

I don't usually have the issues that many have... Not to mention i also just change the Gear Lube as well. Cost about $230 To service myself and takes me about an hour to do. Figure the running costs are minor versus buying new motors.

Robert

u can run the GEN 2's on 87 I believe 350hp but not recommended.

this comes down to what you want,and things like availability and service .looks like
Verardo has the best all around numbers. but its not for me ,although it would look pretty bad ass on the back . my connection with yamaha steers me that way, and has plenty of servicing dealers in our area.need to go with pros and cons....

Fast..Totally agree. Definitely look at F250 vs sho on price. You are only giving up 1.2 mph to the f300 IMHO.

Good luck with the power. Yamaha makes a great motor.
Robert