300 yammy V 300 Suzuki

 G'day lads. 

 

After a bit of feed back On the 300 yammys V a 300 Suzuki. Looking at a new boat and going over motor options. From what Iv heard the 300 yammy is a bit thirsty and I know they need premium juice! 

Suzukis use to have gear box problems but I'm told the y have been fixed. 

I know it's sorta opening up a can of worms! I had no problems with my last yammy and nothing to major that wasn't self inflicted on my last twin suzys

 

cheers 

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Faulkner Family's picture

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 woth a bit of research i

Fri, 2017-09-29 19:43

 woth a bit of research i found the suzis are a bit lighter and told they arent as thirsty, they both have a good name but depends on who you speak to

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300 Suzuki / Yamaha

Fri, 2017-09-29 21:54

 There is some info on this and I remember some issues withe the dampers on 300hp Yamaha flywheels, I think others miight chime in on this one. Definitely worth investigating cos I was surprised Yamaha would let thios issue slide. Carnarvonite i think you know ? There is a requiement for the entire flywheel to be rerplaced at a certain intervall based on prior threads on this issue . Cos the flywheel is harmonically rubber balalanced ?? Correct me if I'm wrong.

I would like to say cheers, but good luck with a dodgy flywheel that causes catastrophic damage to the crankshaft if not replaced. Perhaps there has been a recall ?

Regardless, I have spent some time on a Powercat 30 ft that pushes 50 knts plus with two of these puppies  flat out, and these engines run sweet. 

just saying what has already been discussed. 

 

 

 

 

 

 

 

 

 

 

 

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 That's the v8's. Been a few

Fri, 2017-09-29 21:58

 That's the v8's. Been a few years since they were bought into Australia. The v6 ones have a good rep.

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reece's picture

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 Thanks for that mate.  From

Fri, 2017-09-29 22:07

 Thanks for that mate.  From what I know the fly wheel and the harmonic balancer have to be replaced every service  " every 80hrs" but this is done at yamahas cost and it's only with the 350 V8 but I could be wrong. A mate has a 300 yammy on his boat and hasn't mentioned it 

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Stevo81's picture

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As above. It's the v8 350

Sat, 2017-09-30 08:26

As above. It's the v8 350 with the fly wheel issue. Needs to be replaced when RPMs between 3400-4200  (from memory) reach 80hrs. Yamaha replace for free i think?

 The V6 300 yammy has a bloody good rep. 

Cant go wrong with either 300 IMO. I would think Suzuki might be a bit cheaper? 

What boat you getting Reece?

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reece's picture

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 Yeah from what I can gather

Sat, 2017-09-30 12:14

 Yeah from what I can gather with the 2 motors it comes down to what colour ya want on the back! 

 

Looking at a 24' island cab 

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350

Fri, 2017-09-29 22:40

pretty sure Reece is right. The 350 have the balance issue. Bought a boat today with a yammy on it. I asked the same question and he said the 350 was the only one. Hope that helps 

reece's picture

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Yeah thanks mate! What size

Fri, 2017-09-29 23:07

Yeah thanks mate! What size boat and do you know the fuel burn on it? 

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carnarvonite's picture

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Flywheels

Sat, 2017-09-30 06:16

The flywheels on both the 350 and 300 V8s have to be replaced, an alarm comes up after they have done 80 hours at a certain rev range.
There was a major problem with the exhaust manifolds corroding and allowing water to drain through the exhaust valves into the cylinder and down to the sump when the engine was shut off, not 100% sure if this has been fixed in the later models.
Fuel burn flat chat was 220 litres and hour = 47 knots on a 10 metre Naiad

Cannot comment on the V6s

The follow up from Yamaha WA and Australia was blood woeful enough so that I wouldn't even consider buying another if I had to

reece's picture

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 Thanks for that mate I'm

Sat, 2017-09-30 12:09

 Thanks for that mate I'm looking at a v6 but all good points to know and good to know yamaha have been so good about any issues 

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both good engines

Sat, 2017-09-30 08:23

 both good engines but the Suzuki could be better on fuel. Repowered my boat from a 140 Zuke to a Lean Burn 200 and it uses less fuel at the same speed, The lean burn seems to improve fuel economy  cheers Ace

Vinesh87's picture

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 I have the 300 Yam on my

Sat, 2017-09-30 11:31

 I have the 300 Yam on my 7.5. Very happy with it. Generally cruise at 1.2-1.4kmpl at 24knots. 

Fully loaded to the monties sat at1.1kmpl. Which must have been 3.5-4t on water. 

Awesome holeshot for a 4 stroke.

 

V6 Good, V8 Bad

reece's picture

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 Is that running premium fuel

Sat, 2017-09-30 22:31

 Is that running premium fuel mate? Iv been told if you use 91 fuel not 98 you will get 20-30hp less out of the motor? 

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reece's picture

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 Is that running premium fuel

Sat, 2017-09-30 22:57

 Is that running premium fuel mate? Iv been told if you use 91 fuel not 98 you will get 20-30hp less out of the motor? 

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Vinesh87's picture

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 Thats running 91. I didnt

Sun, 2017-10-01 13:27

 Thats running 91. 

I didnt even realise i was suppose to run 98 until a few months ago!

reece's picture

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 Did you notice any

Sun, 2017-10-01 15:38

 Did you notice any difference in performance? Or still running 91? With a 500L tank in the new one I can't see my self picking up the 98 handle! 

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Vinesh87's picture

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 I have run 95 but i pretty

Sun, 2017-10-01 19:26

 I have run 95 but i pretty much never put the hammer down so i would never really notice a loss of 20hp. I can still get 40kt light and 34kt fully overloaded. 

 

I took 850l to the Monties. 98 haha no way!

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91 vs 95 vs 98

Fri, 2017-10-13 07:50

I've just bought a DF200APX and was told that all of the lean burn suzuki's should be used with 95 due to it running cleaner and reducing temps in the engine rather than achieving less HP. I haven't done a test to see what the difference is but they also said it wasn't worth running 98 as it doesn't make much difference.

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 Interested to see what the

Sun, 2017-10-01 20:30

 Interested to see what the figures turn out to be. Will help me decide what to put on hull #2 haha

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 From nick?

Sun, 2017-10-01 20:54

 From nick?

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 Yeah mate 

Sun, 2017-10-01 21:10

 Yeah mate. I'm after an express. 

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reece's picture

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 Express? 

Sun, 2017-10-01 21:20

 Express? 

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 Yeah. Full cab. No

Sun, 2017-10-01 22:22

 Yeah. Full cab. No walkaround.

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reece's picture

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 Ah got ya! I'm pretty keen

Sun, 2017-10-01 22:25

 Ah got ya! I'm pretty keen on the island cab. Still keep 3-4 blokes outa the weather but still have shit loads of fishin space 

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 Express is the go! 

Sun, 2017-10-01 22:48

 Express is the go! 

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Vinesh87's picture

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Ill run it low over cray

Sun, 2017-10-01 21:17

Ill run it low over cray season and put 98 in if you guys can wait that long haha

reece's picture

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 6-8 months till my hulls

Sun, 2017-10-01 22:44

 6-8 months till my hulls ready mate so no rush for me

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chevaps's picture

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 I'm keen to see the

Sun, 2017-10-01 21:00

 I'm keen to see the consensus on both models.

I'm considering either the Suzuki DF300AP or Yamaha F300B for my upcoming build, and am finding it difficult to separate the two based on a desktop review...

Key distinguisihing features:

DF300AP - chain driven cam shaft, can swing larger diameter props (apparently), longer warranty.

F300B - 70A alternator, ~30kg lighter, better info display.

 

Both have their pros and cons.  

- Both have a relatively solid reputation in the marine outboard world.

- Both require 95RON fuel (Yamaha min is actually 94RON).

- There is a certain appeal to having a hard coating applied to the cylinder walls in lieu of steel sleeves in the F300B, but the DF300AP does apply an alumite coating to forged pistons which in my mind could have the same operational benefits.

- The F300B has dyno data which indicates it is a ~280hp unit, however, I have a feeling this was based on 89RON fuel in the US, hence why Yamaha now state 94RON fuel as a minimum.

 

At this stage I'm trying to look at real world fuel usage figures independent of each manufacturer because i feel their numbers are fudged and not an apple for apple comparison (how can each manufacturer provide test data which shows their unit is the most fuel efficient....), and i think it will come to that at the end of the day.  At the moment i'm waiting for a price on the DF300AP, but i've been advised there will be little difference.

 

Will post additional findings in the coming days.

 

Cheers.

 

Tom

reece's picture

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 Shit ya done sum research

Sun, 2017-10-01 21:17

 Shit ya done sum research there mate!! But like ya say by the time ya weigh it all up from what I can gather it comes down to what colour ya want on the back 

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z00m's picture

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Dual Prop

Sun, 2017-10-01 21:39

 Have you considered the new Suzuki 350 v6 with the duoprop? Seems to be creating a bit of a storm where they have been installed. 

reece's picture

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 Not at $44k a pop! I'd

Sun, 2017-10-01 22:23

 Not at $44k a pop! I'd rather go twin 200 yams at that price 

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Iceman's picture

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Sea Rescue and Govt agencies

Mon, 2017-10-02 08:16

 The majority of Sea Rescue groups and govt agencies are running Suzuki engines on their vessel. The reason is yamahas lack of reliability and getting parts is sometime near impossible particularly in WA.

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crano's picture

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2 month wait

Mon, 2017-10-02 17:12

 I f you like the idea of a 2 month wait for parts go the yammy

chevaps's picture

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 Has anyone purchased or

Wed, 2017-10-04 19:57

 Has anyone purchased or recently received a quotation on a Suzuki DF300AP fully fitted with the multi-function gauge?

What total price is to be expected?

 

Cheers

 

Tom

reece's picture

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 I got a quote over the phone

Thu, 2017-10-05 01:06

 I got a quote over the phone $31k with rigging kit (gauges, throttle ect ) not fitted but fittings generally $1k. They have a sale at the moment and you get the rigging kit free ( $3k saving ) 

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300

Thu, 2017-10-05 12:39

 hey mate . just wondering were you got that quote from cheers.

reece's picture

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 West coast Suzuki 

Fri, 2017-10-13 22:23

 West coast Suzuki 

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F250 for comparison (for what it's worth)

Thu, 2017-10-05 03:23

 For what it's worth as a comparison, I used to run an F250 (4.2L) on my Haines 650R (both 2014 models).  I was told on good authority at the time that 250 was really about 268hp and the F300 about 290, so not a huge difference.  It was also true st the time that the 300 required 98RON although I'm led to believe that this is not a requirement anymore of 300 so you should confirm this.  The hull was rated for 300 but extra few grand in cost and the 98 fuel requirement put me off.

I know boats and hulls are different but I used to get around 1.0nm per litre at 23-24kn cruise when loaded for fishing.  A full day of running to the trench from the river, trolling for six hours and return home I'd use 150 litres for a 110nm round trip.  In perfect conditions on the river I'd see 42kn.

PS be careful with US octane numbers, they aren't the same as ours.  Need to add around 4-6 to the US octane rating to be equivalent to our RON.

 

 

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reece's picture

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 Ok thanks for that mate. I'm

Fri, 2017-10-13 22:28

 Ok thanks for that mate. I'm tending towards the Suzuki as they are saying 300hp on standard fuel and a bit lighter! Il have around a 500L tank in the new tub so I'm thinking I'm better off having a 300 doing it easy rather than a 250 pushing it a bit harder 

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cutter's picture

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300 Yammy

Sun, 2017-10-15 16:24

Im running the 300 yamaha on a 7.65m ali awesome have not had an issue. Think now days they are both very similar