Looking for MPH 250 OX66

[Hunter05]

I have a 26' Avance Center Console. Max speed w 19p 3 blade and 2003 Yamaha 250 OX66 is 49MPH at 5400RPM. Maybe that's all shes got. What is my most economical way to get 5-10 more MPH? What outboard is the best bang for the buck and reliable? Thanks in advance for your help.

[FMP]

Hydraulic jackplate with setback might get couple more mph.

[joneill]

Setback and engine height helped me a lot, pretty sure you want to turn 6000 with that motor as well.

[FMP]

Bit of a heavy weight battle ship

[Hunter05]

Is Set back going to help if the motor is already on a bracket?

[Capt.Insane-o]

another 250 ox66

[FMP]

It's back plenty by the looks of it, maybe just the minimum with a hydraulic jack plate. Great looking boat

[Hunter05]

It's back plenty by the looks of it, maybe just the minimum with a hydraulic jack plate. Great looking boat

Recommended make or model of jack plate?

[FMP]

Bob's has some good colors to choose from.

[Hunter05]

So, if I wanted 5-10mph, what would be a sensible and economical swap?

[Capt.Insane-o]

300 hpdi, or the easy way out is a 300xs

[Hunter05]

300 hpdi, or the easy way out is a 300xs

Meaning.......?
(apologies for my lack of knowledge here)

[FMP]

A 300HP Motor swap

[Hunter05]

I was referring to the “easy way out” with a 300xs. Wasn’t sure what that meant. What’s a good place to look for a used motor? How many MPH would a 300 get me?

[engineermike]

That ox66 is famous for its reliability so I wouldn't give up on it just yet. I would consider a set of hydrotec heads and modify the airbox. That should be worth 2 mph each or 4 total.

At 50 mph, jacking the motor up or adding a cone won't buy you much of anything, but changing props might. On a bow heavy v like that you might consider the Yamaha T1 series of props.