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M-squared

Engine Repower - Merc 3.4L V6??

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Father Time finally caught me, as my 2003 Yamaha VMAX/HPDI 2.6L has 25psi on cylinder #2, and saltwater on the plugs of #2 and #4 😳...after 17 yrs and 1500 hrs of bullet proof operation. So its time to repower. Yamaha has very limited options for me, excluding the SHO line-up, so I’m left with a choice of only the F200 or F150...obviously both great motors.

After a bunch of research, including talking with people I know & trust in the marine biz including Yamaha dealers and mechanics, its clear there’s a old old dog with a new trick in the lightweight, V6 space 175-300 hp space; and that’s Mercury Marine with their new Fourstroke lineup.. I’m eye-balling the 3.4L, V6 200hp. 

Anybody running one of these 3.4L’s on a 22 Pathfinder? If so, I’d love to hear the good, bad and #’s. If not, I’ll share #’s after my purchase/install is complete and I’ve put some time on it. ETA: mid-Sept.

Ps.  RIP ole gal, you’ve done me right👍

B46A811B-7A2E-4A2C-B865-463C4A6922B5.jpeg

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She had a good run! Sorry can’t speak to the mercury I have not run one.. but the sho would feel just like that two stroke hanging on the back. 

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On 7/25/2020 at 4:50 PM, M-squared said:

3.4L, V6 200hp.

That's a beast of a motor, must have massive torque to plant your @$$ in the seat. I will be waiting in the wings to hear what the final decision is so keep us posted.

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any thought on putting jack plate on with the new power 

not much weight difference in new merc and old yammy so she should take it without changing the attitude much.

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2 hours ago, Drummer said:

SHO-time! Impressive engine. Mine amazes me daily. 

No doubt, they are super impressive engines...for the right hull. IMO, it's simply too much investment to hang a 200SHO on the back of my 2003 hull. If I planned on keeping the boat, I would strongly consider.

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18 hours ago, MuddyBottomBluz said:

That's a beast of a motor, must have massive torque to plant your @$$ in the seat. 

That's exactly what most/some people don't realize when I've mentioned the word "Merc" to them. This new design, which is consistent across their entire motor line-up from 175hp and higher is something Mercury Marine put a ton of R & D into. Word is they are 5-6 years again of Yammie and Merc with this new product. 

200 Fourstroke weighing in at less weight than my VMAX/HPDI, with more power & torque, and quieter with better fuel economy is pretty compelling. From my homework so far, I might be the first Pathfinder running a Merc 3.4L v6 Fourstroke. Not sure if I can/will actually make the cross-over, as the F150 or F200 is a safe choice.     

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This decision will hinge on your technician's experience and willingness to keep you on the water! Around here it's all Yamaha with a few Suzukis. Pretty much. 

 

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