Yamaha 150 ProV? Yay or Nay?

[LaqueRatt]

Considering purchasing a Crest Liner pro with a Yamaha 150 ProV. Guy seems honest. Says the compression is low at 90 psi per cylinder. I'm just wondering what I could be getting into if the motor turns out to need work. What is a motor like this worth in good condition? Worth rebuilding? I'd likely have to farm a lot of it out as I'm not at all familiar with a motor like this. It's a 4 stroke isn't it?

 

[racerone]

It is likely a 2 stroke !-----If it was a 4 stroke with 90 PSI compression it might not run.----Or with humor it might not ---" get out of it's own way "-----Farming out a rebuild will be a shocking experience as far as beer tokens are concerned.

 

[LaqueRatt]

How much beer we talking about here? 20 cases? 50?

 

[racerone]

Try 100 depending on where you are.

 

[LaqueRatt]

Ouch. Is it worth it? What do these usually bring in good running condition? USD or beer units. Your preference. USD/beer exchange rate = $20?
Can do basic disassembly myself and I know a guy.

 

[LaqueRatt]

One other question. If this motor turns out to be a turd, can I just toss another motor on and be good or does it have to be a Yamaha? I don't see many Yammys for sale around here.

 

[racerone]

Have you been able to identify this as a 2 stroke or a 4 stroke by looking at it?

 

[LaqueRatt]

I'm not sure. Does this help?

 

[boscoe99]

It is a two stroke motor.

Compression ratio on that model is just 5.6/1.

90 psi is not abnormally low.

 

[Scott Danforth]

Local shop near me charges about $2400 for a Yamaha 150 rebuild. About $1600 for a 70

 

[LaqueRatt]

I know this is probably a dumb question, but if I wanted to put a different motor on this boat does it have to be a Yamaha? Does every type of engine need it's only brackets and such or do they interchange easily? I really haven't a clue. I'm probably going to end up passing on this boat due to it being in an area I generally stay out of, but would be good to know for future reference.

 

[99yam40]

I am sure the bolt hole pattern for mounting outboard motor to a boat have been standardized, so you would not have to drill ne holes to mound a different motor

 

[Scott Danforth]

mounting pattern was standardized in the 80's

 

[LaqueRatt]

I was thinking more about the cables. Will they all just hook right up? I was looking at a couple of my tiller motors today and they have like keyholes in them for cables I think. They look about the same too.

 

[Scott Danforth]

I was thinking more about the cables. Will they all just hook right up? I was looking at a couple of my tiller motors today and they have like keyholes in them for cables I think. They look about the same too.

Controls and wiring are specific. If you change motor brand, you change controls, cables, and wiring

 

[LaqueRatt]

Well that's not what I was hoping to hear, but thanks for clearing that up for me Scott. I suspect though a determined individual with some fabrication skills could make it work maybe? Or is that just more wishful thinking?

 

[boscoe99]

Well that's not what I was hoping to hear, but thanks for clearing that up for me Scott. I suspect though a determined individual with some fabrication skills could make it work maybe? Or is that just more wishful thinking?

It is not an overly large and complicated job to get brand X cables/key switch/engine harness to work with brand Y.

 

[99yam40]

very true, but you need to know which color wires do what for the different brand motors.
steering, shifting, and throttle I am not sure of on different brands/makes

 

[racerone]

Used controls is the best option.