Whatever issues they have certainly is not cooling the demand for the 450. Just back from a week at LOTO staying in one of the Redhead houses across the cove from PBC. Busy week over there with boat movement and deliveries. You couldn’t throw a stick any direction on the premises without hitting a 450 equipped boat.

Stealth mode is just too quiet. Switching to Sport mode is better but you're right they do need more db's.

I think I would throw a couple of 450R decals on the Cowl of a 400R and call it day.

No, from what I’ve heard, either on shore on boat a 400r passing by has been louder than a 450r. Probably not more than 60mph though. Would like to hear a 360apx in person.

All the ones you've heard must be in quiet mode. The "sport" mode lets the exhaust out above the waterline and it's considerably louder and deeper than a 400r.

This is just on the NA 300r for example

Appreciate the feedback on this thread, while opinions may vary it would appear there are significant enough issues in some regards with the 450 that it will be interesting how these motors will fare in a over the next few years. I have always been of the opinion that some new engine variants reguardless if marine or automotive use can have issues that are prolonged over the first few years of there use. Hopefully the manuf will continue to evolve with replacement parts that will eliminate or significantly impact down time with these units.

Hi!

As far as I have managed to search out in Norway, people are happy with them. They are very sensitive to electrical issues and although its a new propshaft over the 400R one, they still snap now and then. Maybe is due to a combination of weight, propshaftheight and ventilating. I am going ahead buying one, and we will see if I did the right decision or not. My boat weight is approx 2,800 lbs with motor and no driver. I use a jackplate, so going on plane the proshaft will be approx 3 inches below the bottom, and at WOT approx 2 inches above. I have experienced no issues with my 400R propshaft.

Thanks for all input! Much appreciated

Cheeers, Toffen

No mechanical issues thus far for me (knock on wood).....however they are a pain in the azz to flush.....the access plugs on the Cowlings seem to create a vacuum and most of the time I have to use pliers to turn them to open and then the hose barb only comes out about an inch and it is a b*tch to hook the hose up....I am sure someone way smarter than me (which would be most) has figured out a hack to make it easier

Sounds like a good plan as long as it still pumps water jacked up that high!

Perhaps make small extension hoses you can add that can be secured near the front of the engines. Capp them off, or use a shot-off valve and quick connector. Can then easily reach the ends and flush.