Canyon 336 with twin 300 performance

[holdfast]

Are you running a 336 Canyon with twin 300 Yamaha ? Please let me know if you are. I would like to discuss if you are satisfied with the engines. I am removing my awful Yamaha 350s and several mechanics are recommending twin 300's. I would like to get some first hand experience

Thank you

 

[Eltajin]

Are you running a 336 Canyon with twin 300 Yamaha ? Please let me know if you are. I would like to discuss if you are satisfied with the engines. I am removing my awful Yamaha 350s and several mechanics are recommending twin 300's. I would like to get some first hand experience

Thank you

Completely satisfied. Did it this fall and admittedly was super nervous; 2011 hull with the A versions of the F350s; so if Yamaha, 300s were only option Went to all digital - f300nsb2s that have some of the xto features. Only ran to 20hr service : maybe lost .5mph off top end, but 15-20% more efficient.

13 people full fuel still hit 43 mph. Can cruise at 37mpg at 1.0. Rpm’s for given speed prob 3-400 higher than the 350s. I had more than 500 hrs in last two years on the f350s and don’t miss them at all. Maybe the hole shot is little slower but I honestly don’t remember. Seems ridiculous grady website only lists the hull with 900hp now.

If you go to wayback machine you can pull the performance numbers from 2020 when they still sold it with 300s. I am hitting those numbers in actual conditions with heavier loads.

Not a speed demon but I’m perfectly happy with the power as I do frequent long runs in the ocean and those just aren’t happening much over 35mph for me.

Happy to answer any more specific questions etc.

 

[holdfast]

Completely satisfied. Did it this fall and admittedly was super nervous; 2011 hull with the A versions of the F350s; so if Yamaha, 300s were only option Went to all digital - f300nsb2s that have some of the xto features. Only ran to 20hr service : maybe lost .5mph off top end, but 15-20% more efficient.

13 people full fuel still hit 43 mph. Can cruise at 37mpg at 1.0. Rpm’s for given speed prob 3-400 higher than the 350s. I had more than 500 hrs in last two years on the f350s and don’t miss them at all. Maybe the hole shot is little slower but I honestly don’t remember. Seems ridiculous grady website only lists the hull with 900hp now.

If you go to wayback machine you can pull the performance numbers from 2020 when they still sold it with 300s. I am hitting those numbers in actual conditions with heavier loads.

Not a speed demon but I’m perfectly happy with the power as I do frequent long runs in the ocean and those just aren’t happening much over 35mph for me.

Happy to answer any more specific questions etc.

Thank you for the great answer. I kept the 350s too long and appreciate your input on the 300s

 

[Eltajin]

Thank you for the great answer. I kept the 350s too long and appreciate your input on the 300s

You're welcome. I get it, was in same situation and its not a good feeling to think I was going to destroy a boat I loved by underpowering. What finally sold me was the dealer's point to me that they sold the hull with twin 225s for years on the express 330, so you will be fine (just search express 330 225s for an endless amount of threads wondering if its underpowered).

One other benefit, the engines tilt fully out of the water now!!

Also, if helpful , here are screenshots of the April 2020 Grady website when they sold the Canyon 336 with 2x300, 2x350, 2x425, or 3x300 power options. Odd that the twin 350 boat is lighter..... For me going from twin f350 xca to twin f300 fnsb2 I dropped ~500lbs from the transom - which may account for why I'm seeing much better efficiency than the charts would indicate, and perhaps the 2021 refresh of the f300's do actually have better speed than the ones tested in 2015 https://yamahamarinemedia.com/wp-content/uploads/2021/04/HotSheet-V6-Offshore-DEC-.pdf .

 

[PlannedOutage]

I own a 2008 Canyon 336 and also had the horrific F350A's on it... I had one of them seize up completely due to thrust bearing failure in February of 2022 during the height of covid supply chain issues with Yamaha reporting at least 12-15 months delay to get new F300s... As an alternative to leaving my boat dry docked for over a year waiting on F300s, I ended up making the difficult decision to switch my boat to twin Mercury Verado 350s and I got the boat back in the water by May of 2022. I have been very happy with the Verados so far and have just under 300 hours on the pair of them now. Best of luck with your F300s - I would have made the same decision if these motors were available back when I needed them in early 2022.

 

[luckydude]

I fish a lot on a friend's Canyon 271 with twin 300s. That sled is fast. Average mpg is 1.6.

I just went and looked, Grady powers the 336 with 2x 450 or 3x 300. So I'm guessing 2x 300 might be a little under powered.

 

[Fido]

Not a Canyon but we have an Express 330 with new Yamaha DES 300’s, Helm Master etc.
Cannot be happier with the performance.
top speed with full fuel, water and 4 POB is 38-39knots at approx 5600-5700 RPM.

 

[Sardinia306Canyon]

I just went and looked, Grady powers the 336 with 2x 450 or 3x 300. So I'm guessing 2x 300 might be a little under powered.

Umm, honestly I don't think that the 336 will be underpowered with twin 350 as it is not sooo much different than the 306 and the DF350 with his duo prop or the brand new BF350 should be plenty of power to move the 336 reasonable fast.
I personally would wait a few month till the first hand experiences with the BF350 are out to see if this beast works flawless and then go with the BF350 as it is similar to the F350, a big block and high torque engine.
Top speed would not be as with triples/twin 450 but who really need 53+ mph, would 45mph not be enough for most boaters?

Chris

 

[Eltajin]

Not a Canyon but we have an Express 330 with new Yamaha DES 300’s, Helm Master etc.
Cannot be happier with the performance.
top speed with full fuel, water and 4 POB is 38-39knots at approx 5600-5700 RPM.

Just bumping this thread as an update as I now have 120 hours on my repowered Canyon 336 with twin F300's (nsb2s). Still completely satisifed (if not more so), just like this poster with his Express. Highly highly recommend the full helm master, after a bit of practice it makes the bow thruster obsolete, and the staypoint etc are really nice features to have solo. Still managing better than 20% fuel efficiency improvement compared to the old V8 350s.

Also posting because since my repower Yamaha released the 4.3L V6 350, so I'll probably have one of the few boats with these engines as imagine most will go for those (I would have too if available but have zero regrets).

Finally, Grady is now offering the Canyon 336 with triple 4.3L V6 350s, which just seems to me as way too much horsepower for this hull. But I guess the market is the market and people like to say their boat can go 60 lol??!

 

[Fishtales]

That is the perfect set up for that hull if you ask me.