How much increase in speed between a 60 and a 90?

[mjlyn]

I have a Lowe 20ft pontoon with a Mecury 60 4 stroke. Right now my top speed by GPS with the top down and driver only is 16-17mph.

Id like more power to but now much more speed will i get with say a 90 or 115. Or is there somewhere that i can look up tests showing speed changes with different engines?

Thanks in advance for any feedback.

[Heatman]

I have a 90 hp on my 22' Lowe and it runs 23-24 mph per gps.

[lakerunner]

23 with 2 on board and full tank and cooler

[Thummper3]

23.5' with 115 Merc. running 24-26 mph with me and the wife and the dog

[wwind3]

'09 Lowe SS204 90 Optimax--underskinning--16 inch pitch Merc stainless prop--

Hit 30 once--but usually 28 with just me.

24 with 3people last weekend.

[kenny80]

well dont go down in hp!! 24 with 40 10mph by myself!

[mjlyn]

well dont go down in hp!! 24 with 40 10mph by myself!

Ouch...10 by yourself.....hate to be on it loaded.


Where online can i find prices for 4 stroke 90's?

[Heatman]

Here's one place to look

http://www.boatmotors.com/rebuilt_outboard_motors/

[mikeherb]

24 MPH with three logs and an 600+ lb sundeck.

This guy sells Suzuki, Yammy, Merc and Evinrude.

http://www.edsmarinesuperstore.com/

[Beamer]

I get the same as Heatman & Lakerunner 22-24 depending on conditions.
22' AquaPatio, 90 4S Yammy.
So with a 20' and 90 HP you should get a few more MPH.

[schmir]

I have a 20 footer with a 90 2 stroke and the best I got with gps was 24mph with 2 guys, full tank of gas and full cooler. Logs were clean too!

[buzzardbeak]

We got a new toon a month ago. When we tried the 60 and compared it to a 90, it was amazing. We got the 90 and do not regret it. The dealer told me (and I believe him) they had tested the boat performance to make sure it was good.
Last Wednesday, I did our first speed test with it. Full tank and 3 adults, the gps showed 27.2 mph. The prop is an 18 x 13P aluminum. We were happy with the results, needless to say.
For cruising, I like to throttle back to 4000 rpm. We are getting about 19 on the gps at these settings. i believe it is much easier on the engine at cruise settings.
Our first toon was an 18 Godfrey and a 25 4 strk. This boat was a firewall it and wait to get there boat. I estimate 12-13 mph downwind. So this is quite a performance upgrade over what we were used to operating.
is to get what hp you can afford since you can throttle back and go easy on the engine.

Good luck.

Frank

[mikeherb]

Cruising speed is what I was hoping for when I added my third log. I cruise at 4400 RPM and get 17-18 depending on load and conditions. It'll get you there, make a good breeze and folks in the boat can still talk a bit.

90 HP will should dramatically increase the usability of your boat as well as add to your top speed.

[mjlyn]

Thanks for the input guys.....i am going to see what it will cost me to upgrade to a 90.

[TennesseeTooner]

I was finally able to get a GPS on my boat the other day and I was suprised! I thought that I was going around 15 - 16 with a 40hp merc on my 24 footer. WRONG! I was only getting 11-12. But, there were 4 of us on board with some other things also like tables, grills, coolers ect.

What I do know about the 90 vs. 115 is that mercury uses the same exact block for both motors. The 115 uses a bit more fuel and you only get 1-2 mph more speed out of the 115 than the 90. I am buying a new motor for my boat at the end of the year, and I would definatley get the 90 over the 115 for the gas and $ difference, and forget about the 2 mph defference.