BIG outboard

thats insane! I hope this pushes merc and yamaha to push the limits of their big motors. This could get exciting.
 
I know Yamaha could go bigger with their V8, no need to now as they sell more by limiting the hp to 350. Merc would probably have to start with a fresh motor design as hte Verado is maxed out. I still have yet to see a 350 Verado in person
 
spareparts said:
I know Yamaha could go bigger with their V8, no need to now as they sell more by limiting the hp to 350. Merc would probably have to start with a fresh motor design as hte Verado is maxed out. I still have yet to see a 350 Verado in person
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both can go bigger. I've been to several verado classes and 350 is not even close to the full potential of that motor. I have driven boats with 350sci's. They are no joke. But they still use very little boost. I have heard that block can handle almost 600 hp. I'm sure the yammi can handle as much too but they are lacking the need for speed that mercury racing division has. I'm sure EPA regulations play a big part too. If you ever get a chance to drive a boat with the 350sci take it! those things really spool up.
 
I'm still very sceptical with the verado 350 SCI, for the displacement, they are making a lot of power, they have to be blowing a ton of boost thur those motors. I've also noticed the 350 SCI is listed as a racing motor, not general produciton. I've also noticed anything from the 250 Pro and up require 92 octance fuel to make max power. The only boats I've seen tested or written up with the 350 SCI has been factory sponsored boats. Ive seen enough of their lower HP verados blow apart around here. There are palnety of verado powered boat around here, most of them could benifit from the extra HP, but I have yet to see one with 350's. The Yamaha 350 has enough displacemnt to go much higher in HP with out doing much, I fugure they are selling more of them by limiting the HP to only 350. As far as combining the two, theres a guy on scream& fly who supercharged a 225 Honda, he's got it on a 28-30 cat that hauls butt. Its under the emmisons engine thread, he's from Sweden, he has some great videos on his thread.
 
I agree 110% about the advantage of displacement that yamaha has.
I may have shot from the hip about 600hp but I do remember back at the first verado class I went to the instructor told us that it was tested with two blowers and I forget exactly how much hp it is capable of but I know it was a lot. The next time I talk to merc tech I will see if they know. As for the 350 sci. It is built buy the racing divison but anyone with a large sum of money can buy one. We have a customer with a 34 venture that had a pair of 300 verados. He wanted to go faster so he ditched them for a pair of 350 sci's. I work on both yamaha and merc. Mostly 200hp and up. The yamaha v8 is a great motor. But there is a lot under that cowling. A lot more than the verado making the same power
 
My Merc dealer claims the Verados are capable of much more hp too. Mercs lack of choice on lower units has hurt the sale of the Verado 350's with the go fast crowd, IMO. The lower is massive and they have redesigned it due to the lack of performance features. Price on the Seven Marine super-charged chevy powered v-8? Rumored from $52K to $70k on another site. I could buy one and repower the Whaler, but then I would have to live in the box it comes in. I wonder if the crate is large enough for a family of three? :head:

The new generation of 4-stroke outboards has gotten interesting. I want to go 4-stroke but I don't want to give up the HP to Weight ratio of my 2-stroke.
 
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