Article: Mercury Marine Introduces The All New V12 600hp Verado Engine

**Scream And Fly** · 02-11-2021, 12:21 PM

You can view the page at https://www.screamandfly.com/content...-Verado-engine

**25two.stroke** · 02-11-2021, 02:58 PM

A Verado so its assumed to be supercharged...so we are really only making 600 hp from 7.6 liters of displacement? a v12 with only 600 hp? A 2 speed transmission maybe to help make up for a weak engine?

Can someone please explain why its such a low hp rating? Do the dual props decrease the prop shaft hp rating? Would the transmission decrease hp? what am I missing?

**madvillain** · 02-11-2021, 03:55 PM

Originally Posted by 25two.stroke

A Verado so its assumed to be supercharged...so we are really only making 600 hp from 7.6 supercharged liters of displacement? a v12 with only 600 hp? A 2 speed transmission maybe to help make up for a weak engine?

San someone please explain why its such a low hp rating? Do the dual props decrease the prop shaft hp rating? Would the transmission decrease hp? what am I missing?

Actually, it's an N/A engine. Mercury has the performance and efficiency data on the website, I'd say for its size that its impressive. My assumption is that their goal with this engine isn't performance, it's to make owning a real big boat a lot simpler to use, but maybe not to maintain lol.

**InjectorService** · 02-11-2021, 04:19 PM

Originally Posted by 25two.stroke

Oh yeah I missed that in the beginning of the promo video...I wonder what makes it a Verado then? The classic verado features like the AMS and DTS were made available in the v6s and v8s, yet they weren't labeled "Verado" cause they weren't supercharged. I wonder what makes this a Verado.

The AMS units are all designated as Verados.

**InjectorService** · 02-11-2021, 04:20 PM

Very cool article Greg, great coverage!

**25two.stroke** · 02-11-2021, 04:46 PM

Is the AMS what makes it a Verado then?

That 45 degree steering range must be crazy FUN to drive.

**Bill D.** · 02-14-2021, 12:38 PM

This new non-supercharged 600 hp V12 engine has 50 hp/cylinder, compared to only 37.5 hp/cylinder for the 300 hp. V8. I was surprised to see that the bore of the cylinders in the V12 is slightly larger than the bore for the V6 and V8 (which share the same size pistons), so Mercury is apparently using different/slightly larger pistons in the V12 then what they use in the V6 and V8. Producing a V12 did not surprise me too much, but I never dreamed that they would go to that added expense of different pistons. One would think that if they copied the new pistons (and stroke) of the V12 into the V6 and V8, then the non-supercharged V6 and V8 could presumably be rated at 300 and 400 hp. respectively (i.e., 50 hp. per cylinder). This could easily lead to the phase-out of the inline 6 supercharged Verado engines that are currently rated at 350 and 400 hp. (and that require higher octane fuel). One big advantage would be that the V6, V8 and V12 engines require only regular 87 octane fuel, and I believe that they are 3 star CARB rated. Also, those supercharged inline 6 engines actually weigh more than the current V8. I find it to be a hassle to have to drive a good additional distance to find ethanol-free 91+ octane fuel for my 225 Pro Max. In addition, supercharging....as "cool and sexy" as it is....is an added complex system that many boaters just don't want to have in their pleasure boat engines....and for those who do like it/want it, any new version of the V6 and/or V8 engines could certainly be supercharged (ditto the V12)....just like the current 450 hp. V8 (from Mercury Racing) is now.

I would also like to see the dual counter-rotating props that are on the V12 to be offered as an option on the Mercury V8. I think that system has proven to be very successful on the Suzuki 350. The Suzuki requires 89, versus 87, octane fuel (due to the very high compression ratio in that engine....which was obviously needed for them to obtain 350 hp. from only a 4.4 liter engine), and that one fact alone makes me reluctant to buy that engine. Counter rotating props work well with larger boats. Bottom line: non-supercharged engines....with reasonable compression ratios....that run great all day long on 87 octane fuel is clearly what the majority of the "in the know" marine market desires. The way to achieve that is typically through good old-fashioned "large cubic inches."

By the way, I assume that a V10 is yet another future possibility, if Mercury needs more flexibility in their engine offerings. Anyway, just my thoughts at this time. Also, "by the way," I think I just saw where Volvo has now dropped the Seven Outboard engine line. Why the heck did Volvo buy that company, only to drop what they sold? Is there more to that story?

**mjf** · 02-16-2021, 12:02 PM

Bill
That's a good point about the bore and stroke of the v12 and the other v block engines offered by Mercury. I missed that one. I believe its time for Mercury to put the L6 to rest for the same reasons. Who would want to put an L6 Verado with 17 yr. old technology on a 2021 boat? Not me.
Your idea about copying the v12 piston is the best but I think it would take a lot of work and money on a motor that that recently came out of research and development. The simple and most cost effective way is for Mercury to slightly detune the 450r power head and offer it as a 400 HP v8 under the Mercury product line (Verado or Pro). As far as the 350 goes they could probably get 350 HP out of a naturally aspirated v8. I believe a new 400 v8 would be a big sales success for Mercury because it would convince customers to select or trade up for the new technology.
And another thing could someone please tell me why the 450r cost approx. $27,000 more than the 300v8. You can buy two 300v8 s for the price of one 450r and still have thousands of dollars left over.

**Ron V** · 03-21-2021, 08:47 AM

"First steerable gearcase"? Evinrude had it in 1909.

**powerabout** · 08-20-2021, 11:18 PM

Originally Posted by Ron V

"First steerable gearcase"? Evinrude had it in 1909.

then stringer stern drives, then Chrysler L drive..

**davidson02** · 10-22-2021, 06:16 PM

Cool! One big advantage would be that the V6, V8 and V12 engines require only regular 87 octane fuel, and I believe that they are 3 star CARB rated.

Davidson from www.drywallamarillo.com