anyone go from 1.8s to new 1.9s ?

[yam240sx]

and if so can you tell how much more you like them ? thanks

 

[ACRDSPORT14]

My son got a new Waverunner with the 1.9 and it's smoother and quieter. Haven't broke it in fully yet to see performance yet.

 

[Marvin willis]

I heard the 1.9 is slower

 

[Maccam26]

I jumped form a 2019 SX190 to a 2024 AR190 this year. So same size boat and hull. Overall after 5 hours, the 1.9 has a bit more torque and is a little quieter around 22-25 cruising speeds. It is not a night and day difference though and I wouldn't change for sake of the 1.9. I changed because I wanted the bench seating and tower. My top speed is around 40mph with the 1.9 which I believe is measured with GPS satellites now vs old boats had innacurate paddle that showed higher speeds.. this is probably why some comment it is slower. In fact, the GPS top speed of my 1.8 was probably 36-38mph but the speedo showed 41-42. the 1.9 shows about 40mph gps... so it is probably a 2-4mph increase in top speed. Still slow, if you want top speed the NA 1.8 or 1.9 is not the best option. I want cheap gas, no supercharger.

 

[Marvin willis]

There was a guy was a 23 and 24 wave runner. Said the 24 was quieter but wouldn’t get past 59 mph. The 23 would do 67. Same rpms with both skis.

 

[Maccam26]

There was a guy was a 23 and 24 wave runner. Said the 24 was quieter but wouldn’t get past 59 mph. The 23 would do 67. Same rpms with both skis.

Perhaps the 24 is governed? Guess if same RPM, that's not it.. weird, maybe something off on that 24... who knows.. All I can say is my 1.8 and 1.9 in same hull are probably similar in top end

 

[steelhorse454]

So if you went from a 2019 SX190 to the 2024 AR190, I will say there is a slight weight difference due to the tower, which will make the boat 3-4 mph slower.
When I compared a 2023 SX195 to the 2023 AR195 I purchased, the mph was I believe 54 mph compared to 50 mph for my boat.
Long to short, the 2024 tower is slowing you a bit otherwise I believe you would have seen a bigger difference if say you purchased a 2024 SX190.

 

[Maccam26]

So if you went from a 2019 SX190 to the 2024 AR190, I will say there is a slight weight difference due to the tower, which will make the boat 3-4 mph slower.
When I compared a 2023 SX195 to the 2023 AR195 I purchased, the mph was I believe 54 mph compared to 50 mph for my boat.
Long to short, the 2024 tower is slowing you a bit otherwise I believe you would have seen a bigger difference if say you purchased a 2024 SX190.

That makes sense then and probably why yamaha mentions about 6mph increase if I did SX to SX... maybe I'm seeing 2-4mph due to tower weight.

 

[Maccam26]

I am curious as to how they were able to remove 1 qt of oil in the motor using the same pan, did they change the pickup any? Kind of weird move going to less oil which means less cooling efficiency possibly ... I'll be increasing my replacement frequency a bit probably..