Verado 350 Sci - any experiences

Toffen · 10 June 2009, 09:55

Hi!

I have a Phantom 25 offshore rig with two Merc 2.5 EFI SS engines (300 hp each). These are Formula One engines, and demand continuous support. And they use 80-100 litre per hrs + 3 litre synthetic oil of NOK 200 per litre per hrs as well...

So I consider to buy one Verado 350 Sci, and would be very pleased if you could come back to me about your thoughts about the engines longevity. I would also be very happy if you could give me some data on fuel consumption at 4,000 and 5,000 rpms.

I look forward to hearing back from you.

Cheeers, ToffenG

Petrov · 10 June 2009, 16:18

Quote:

Originally Posted by Toffen

Hi!

I have a Phantom 25 offshore rig with two Merc 2.5 EFI SS engines (300 hp each). These are Formula One engines, and demand continuous support. And they use 80-100 litre per hrs + 3 litre synthetic oil of NOK 200 per litre per hrs as well...

So I consider to buy one Verado 350 Sci, and would be very pleased if you could come back to me about your thoughts about the engines longevity. I would also be very happy if you could give me some data on fuel consumption at 4,000 and 5,000 rpms.

I look forward to hearing back from you.

Cheeers, ToffenG

This is data from latest delivery, its a single installation, we have also made a tripple but never keept the data.
This was on a 8,5m RIB.

2000 RPM: 15,2 L/H
2500 RPM: 18,6 L/H
3000 RPM: 24,7 L/H
3500 RPM: 32,4 L/H
4000 RPM: 40,5 L/H
4500 RPM: 51,6 L/H
5000 RPM: 65,1 L/H
5500 RPM: 85,0 L/H
6000 RPM: 110 L/H
6500 RPM: 119,8 L/H

Toffen · 10 June 2009, 16:50

HI!

Thanks. Have the engines met your expectations. Do you feel the platform (2,6 litre and supercharger) will be strong enough in the long run. How many hrs have you on your engines. I expect to use my 350 Sci approx. 75 hrs a year, so its not so much. However, I run a great deal offshore in rough conditions.

Cheeers, Toffen G

codprawn · 10 June 2009, 19:35

What speeds were you getting at those RPM and what prop were you using? Any inofrmation is always usefull.

chewy · 10 June 2009, 20:29

I think you should pop round to Haugesund and take me out in your boat!

blufin · 10 June 2009, 21:13

hi janis
what are your thoughts about a putting a 350 verado on a lynx. how well does the yam v8 run on the black lynx, what speed, any issues ?
sorry for the hijack.
thanks gerry

Petrov · 10 June 2009, 21:21

Quote:

Originally Posted by Toffen

HI!

Thanks. Have the engines met your expectations. Do you feel the platform (2,6 litre and supercharger) will be strong enough in the long run. How many hrs have you on your engines. I expect to use my 350 Sci approx. 75 hrs a year, so its not so much. However, I run a great deal offshore in rough conditions.

Cheeers, Toffen G

Its not my engines, just delivered them on boats, regarding to customer they are really happy with performance.

Petrov · 10 June 2009, 21:23

Quote:

Originally Posted by codprawn

What speeds were you getting at those RPM and what prop were you using? Any inofrmation is always usefull.

Revolution 4 on both setups, the 11,3m boat with tripple 350 is doing 69kn.

Petrov · 10 June 2009, 21:25

The 8,5m is doing 58,5kn.

Petrov · 10 June 2009, 21:29

Quote:

Originally Posted by blufin

hi janis
what are your thoughts about a putting a 350 verado on a lynx. how well does the yam v8 run on the black lynx, what speed, any issues ?
sorry for the hijack.
thanks gerry

The customer said that the Lynx 26 is doing 67kn.

Petrov · 10 June 2009, 21:30

The Lynx 26 with a Verado 350 would be a great setup.

codprawn · 10 June 2009, 21:50

Quote:

Originally Posted by Petrov

The 8,5m is doing 58,5kn.

Great info - especially the fuel figures - one last question - what pitch prop on the single?

Petrov · 10 June 2009, 21:51

Quote:

Originally Posted by codprawn

great info - especially the fuel figures - one last question - what pitch prop on the single?

21

Toffen · 10 June 2009, 21:57

Hi!

Thanks!

Just a few more questions; the gearcase of the 350 Sci is larger than Optimax 300XS gearcase (Torquemaster & Fleetmaster). Have you ever compared them? I am thinking added drag.

What kind of propheight do you run on the ribs? When I had a single promax 300 I ran the propshaft 2 inches - 2,5 inches below the bottom. I need that propshaft height to get the speed I want, so the question is if the lowerunit for 350 Sci allows that (water pressure and internal strength).

My boat weights out at 750 kg without engine, no fuel, no gear and no passenger. How heavy is the rib with one 350 Sci? I am not afraid of the engine weight (300 kg).

Cheeers, ToffenG

Petrov · 10 June 2009, 23:26

Quote:

Originally Posted by Toffen

Hi!

Thanks!

Just a few more questions; the gearcase of the 350 Sci is larger than Optimax 300XS gearcase (Torquemaster & Fleetmaster). Have you ever compared them? I am thinking added drag.

What kind of propheight do you run on the ribs? When I had a single promax 300 I ran the propshaft 2 inches - 2,5 inches below the bottom. I need that propshaft height to get the speed I want, so the question is if the lowerunit for 350 Sci allows that (water pressure and internal strength).

My boat weights out at 750 kg without engine, no fuel, no gear and no passenger. How heavy is the rib with one 350 Sci? I am not afraid of the engine weight (300 kg).

Cheeers, ToffenG

Havent compared them but they are hughe and no probs with them yet.
From bottom cavitation plate to bottom hull on the tripple it was 4 inch on the middle engine 3,2 inch on side engines, on the single engine we had 3,4 inch, this is hard to compare because boats are so different, these are good setup for speed and loads on these boats, for only speeds we could raise them higher.

codprawn · 10 June 2009, 23:54

Those figures confirmed what I was hoping - if I fit a Verado to my boat I should get not only a higher top speed but also better fuel economy at cruising speeds - a big engine at 1/2 throttle is better than a smaller one 3/4.

At 45mph it does about 4mpg which isn't bad at all.

Bigmuz7 · 11 June 2009, 00:34

Quote:

Originally Posted by Toffen

Hi!

Thanks!

Just a few more questions; the gearcase of the 350 Sci is larger than Optimax 300XS gearcase (Torquemaster & Fleetmaster). Have you ever compared them? I am thinking added drag.

What kind of propheight do you run on the ribs? When I had a single promax 300 I ran the propshaft 2 inches - 2,5 inches below the bottom. I need that propshaft height to get the speed I want, so the question is if the lowerunit for 350 Sci allows that (water pressure and internal strength).

My boat weights out at 750 kg without engine, no fuel, no gear and no passenger. How heavy is the rib with one 350 Sci? I am not afraid of the engine weight (300 kg).

Cheeers, ToffenG

Well as you'll now be only running one gear case , is that such an issue ?

Also your transom weight isnt goint to be a whole lot different,.. but the lack of noise is sure going to be

Plus your only looking at one service a year for those hours 'maximum' and no oil to buy

They do get mounted very high, and you must get your transom checked for height before fitting to make sure the fit is good as its essential for best performance

Toffen · 14 June 2009, 19:09

Hi!

When two engines I have 600 hp in total, but two lower units dragging. With 350 hp the lower unit drag is also a substantial. But since the proshaft height will be approx. 2 inches below, I presume the new lower unit to be just as fast as a standard torquemaster.

The 2.5 efi's hydraulics, fuel systems and dual ram steering & tie bar are at the transom, the total weight is approx. 430 kg. With the Verado 350 the weight will approx. 320 included the powerlift.

The transom is like a rock despite its being 25 years old. I have also made some bracings with steel tubes through to the stringers. See picture.

Have anyone of you compared the speed with a Verado 300 vs Optimax 300XS and Verado 350 Sci on the same boat?

Cheeers and thanks! ToffenG

Cookee · 15 June 2009, 08:51

Quote:

Originally Posted by Toffen

Hi!

When two engines I have 600 hp in total, but two lower units dragging. With 350 hp the lower unit drag is also a substantial. But since the proshaft height will be approx. 2 inches below, I presume the new lower unit to be just as fast as a standard torquemaster.

The 2.5 efi's hydraulics, fuel systems and dual ram steering & tie bar are at the transom, the total weight is approx. 430 kg. With the Verado 350 the weight will approx. 320 included the powerlift.

The transom is like a rock despite its being 25 years old. I have also made some bracings with steel tubes through to the stringers. See picture.

Have anyone of you compared the speed with a Verado 300 vs Optimax 300XS and Verado 350 Sci on the same boat?

Cheeers and thanks! ToffenG

To be honest if I had that rig and it was reliable I would stick with the twin setup - it will be much more stable offshore with counter rotating props - of course you should gain in fuel consumption with a brand new single motor, but a single prop won't handle as well IMHO.

patos · 22 June 2009, 22:38

Hei Toffen.
I live in Kristiansand and had the Verado 300 last year.I'm testing the same type of boat with the 350 right now.
I give you som data soon. The boat are for sale.