Yamaha 150 4 stroke max revs wot

[Sealion]

Hi. Looking at a ribeye 650 sport with a yamaha 150 4 stroke. On a test it only rev'ed to 4100 which was 29kts.

I would have thought it would go a little more. What revs could you expect at WOT and speeds (assuming a clean bottom which this one didn't have)

Any info on fuel consumption at cruising revs (I was assuming 3000 ish) would also be helpful.

Thanks

[Ovey]

I've got a Ribeye 600 with Yammy F115 - I get WOT of around 5500-5600 and top speed of around 35-37knots on GPS (dependant upon load). I would imagine your WOT to be around the same (maybe higher) with top speed of around 40-45ish? Don't forget that the prop size/pitch will have an effect too (mine is a 13x17K).

Can't say I've accurately measured consumption but it doesn't seem to drink it!

[Ovey]

In-Line Four Specifications | Yamaha Outboards

Just click on the relevant engine and it gives you the WOT range.

Hope this helps.

[Sealion]

Great. Thanks I thought it was a bit off what it should be

[jyasaki]

That sounds way low. Is the hull clean? If it is, I'd say it's way over-propped. Any idea what the prop specs are?

jky

[Ovey]

It may also be blocked injectors, an electric/plug fault, fuel system blockage, any number of things really.

Forgot to say - welcome to the forums!

[Searider]

Is the boat kept afloat?

If the bottom is heavily fouled this would be the first thing to get the seller to deal with.

[whackywoody]

Hi Sealion, I purchased a 2008 Ribeye 650s with an F150 engine this February and love the boat so good choice of boat

My boat is heavily anti-fouled which is rough as its patchy but with a 19" pitch prop I get 5700 - 5800 RPM and a top speed (according to yam gauges) of 42 - 44 knots so there is definitely an issue with that setup you have just sea trialed.

The 19" pitch prop is the setup recommended by Ribeye / Yamaha.

I did quite a bit of research on these boats so if you need any advice or other questions just pm me

Good Luck

[Sealion]

Thanks for all the info. I think the boats got lots of weed on the bottom. After checking out the service history (or lack of) and cost of a retube I decided against that particular boat. Put an offer in on a pascoe sr7 instead.

Thanks again

[Enigma]

Originally Posted by whackywoody

Hi Sealion, I purchased a 2008 Ribeye 650s with an F150 engine this February and love the boat so good choice of boat

My boat is heavily anti-fouled which is rough as its patchy but with a 19" pitch prop I get 5700 - 5800 RPM and a top speed (according to yam gauges) of 42 - 44 knots so there is definitely an issue with that setup you have just sea trialed.

The 19" pitch prop is the setup recommended by Ribeye / Yamaha.

I did quite a bit of research on these boats so if you need any advice or other questions just pm me

Good Luck

Hi do you know what the fuel capacity is on a ribeye 6.5m inboard tank. Plus have you been able to fit a reserve engine (outboard). Cheers