Yamaha VF250 SHO Short Shaft Build Thread

**mistah_max** · 04-19-2023, 09:46 AM

super cool project.

i know of a guy with a supercharged SHO on a 21 cougar that would be very interrested in this setup.

btw im the guy with the 22 talon who sent you my ecu earlier this year for a flash. cant wait to rig the SHO on the talon a try it out!

**DrexelSST** · 04-20-2023, 06:28 PM

Originally Posted by InjectorService

Unfortunately I don't have a hull yet. The long-term goal would be to get one of the following hulls and supercharge the Yamaha.

1. Talon 22
2. Liberator 22 (maybe 21 if the price is right)
3. Cougar 21 (if the price is right)

I'm also considering leaving it with no supercharger and running it on a STV Euro. But I'd have to confirm the weight beforehand. Guys are running HPDIs and Optimaxes at around 500lb, but this is probably a bit heavier.

This is sort of a premature project, but Derek presented me the opportunity and I couldn't say no.

Yamaha says these units weigh 505lb, and with your short shaft modification... I would assume that you would be able to shave a few pounds off that number. Definitely interested in seeing what the total weight comes out to. Luckily for me, when my sleekcraft was rebuilt, it was rebuilt following the build of the only person i've seen put a yamaha 250 SHO behind it. So it's setup for the weight

**mistah_max** · 04-21-2023, 07:10 AM

im pretty sure i saw 534lbs real weight including cowl and oils. posted by TUFF maybe?

**Greg G** · 04-21-2023, 07:29 AM

Always wanted someone to hang that motor on a scale and get a real weight #

**canuckr** · 04-21-2023, 07:48 AM

I forget the exact numbers but it was lighter than the 300R by 10-20 lbs IIRC.

**InjectorService** · 04-21-2023, 08:55 AM

I will definateley get a weight on it once it is back. I wanted to get one before it left, but the scale I ordered came broken, and I wasn't going to let that hold up my shipping. I might have another option to weigh a stock motor though.

EDIT: And thanks for the business Max, nice to see you on SnF as well!

**Dave S** · 04-24-2023, 03:35 AM

Nice work..... Project.......There is a 18 foot Baker for sale........$1200 good boat for this.......

.......

**InjectorService** · 05-08-2023, 04:56 PM

I haven't been posting it here in a bit, maybe some of you have followed along on Instagram. But here is the latest update:

The lower unit is complete. There was no filler used, only aluminum. The plan here is to mirror polish the case.

**InjectorService** · 05-08-2023, 05:03 PM

The assembled unit. And clearance check.

**TwzteD** · 05-08-2023, 07:45 PM

Hell yeah awesome job man, the four strokes are the inevitable future I'm glad somebody is doing stuff like this because eventually everybody else will have no other choice.

**MarineX** · 05-08-2023, 08:20 PM

Originally Posted by TwzteD

Hell yeah awesome job man, the four strokes are the inevitable future I'm glad somebody is doing stuff like this because eventually everybody else will have no other choice.

Yup, 4 strokes are the covid shot of the outboard world.

**mistah_max** · 05-09-2023, 07:02 AM

did you get that cone from MCR performance in ontario?

**canuckr** · 05-09-2023, 07:07 AM

Originally Posted by mistah_max

did you get that cone from MCR performance in ontario?

Supplied by the originator of the post. They are nizpro cones. Injector service is also a Nizpro dealer, offers tunes and gets Nizpro parts.

**mistah_max** · 05-09-2023, 07:12 AM

Originally Posted by canuckr

Supplied by the originator of the post. They are nizpro cones. Injector service is also a Nizpro dealer, offers tunes and gets Nizpro parts.

ok cool. i knew blake is a nizpro dealer. the tuned my ecm in feb. MCR is a new performance shop that just opened and they offer a similar fully welded nosecone. it may be that he's also a nizpro dealer and he get his cones from them also. not sure, but its nice to see some performance parts available in canada for those SHO's