300 Yamaha HPDI?

[Ed Walker]

Thoughts or experiences on the 300 HPDI? I think most of the 300's have been dogs. There is one on the boat Im looking at. Not really what I want but the whole package seems like a pretty good deal. That is unless the motor is a total POS. Has warranty until 09' though.

[fizisition]

You can read alot of reviews on the 300's at kingfishconnection forum. My Kingfishing teams contender is powered with them and I would have to agree they are a little bit of a dog. Ours have been reliable, after a few warranty services. I have heard plenty of horror stories from others though. I'd ask to see the service history


http://www.kingfishconnection.com/phpBB2/viewtopic.php?t=3331&highlight=hpdi+300

http://www.kingfishconnection.com/phpBB2/viewtopic.php?t=639&highlight=300+hpdi

[Steve Bennett]

Mine was always in the shitter. I always had problems with the water pump, fuel pump, spark plugs, etc. It popped a cylinder at like 150 hours or so, but they replaced the whole powerhead under waranty. Even after that, we still had some trouble, but it was better.
I wouldn't call it a dog though, when it was running good atleast. It propelled my 24' pathfinder with a tower and dual stations to almost 60 mph with a 21p 4 blade.

If it's that good of a deal I'd probably still go for it, but only because it has the waranty until 2009. I'd be looking around for 250 yamaha 4 strokes though before the warranty is up, that way you don't have to change controls.
Ed, are you back on the Conch search? You've gotta come ride on mine since the prop change and Bob's parts.

Steve

[Louis Rossignol]

One of the Hell Divers has one right now in the shop. Getting a new power head, it's just about a new motor.

[Spearchuckerz]

I thought the motor had big balls, it just idled like a OMC product. They had problems with excessive oiling, leading to fouled plugs.

Mine cut off at idle multiple times.

250 4strokes are the way to go. Whole different ball game from the 225 block, due to the variable cam.

[chuckle head]

i think in a year or so they will have ironed out all the problems with them...it seems like anytime new power is introduced, they have lots of issues. i have 250 hpdi's and i love them...been around for a while and they have them perfected imo.

[Jaizzen]

There is one right now on THT for 10K with controls.

J

[Gamble]

All I know is they had a 27 page list of "alterations" from Yamaha to there techs. If you get it,, get rid of it!!

[ANGERCON]

i would deffinately look for something with a 4-stroke. not only are they more fuel efficient, but they will also last much longer. look at the v-tec honda 225. they claim 6 gph, and i know of a navy command that has put 7500 hours on a set, and has had no major problems.

[divergulf]

I have a 200 HPDI and over 300 hours on it in a year. Never had any problems. I hope i can say that when I put another 300 hours on it this year.

[Steve Bennett]

i would deffinately look for something with a 4-stroke. not only are they more fuel efficient, but they will also last much longer. look at the v-tec honda 225. they claim 6 gph, and i know of a navy command that has put 7500 hours on a set, and has had no major problems.

Honestly, do you have any idea what you're talking about?

6gph? Every motor on the market gets 6gph at a certain rpm, and fuel efficiency in general is only relative to the hull.

And who said that 4 strokes are more fuel efficient? If you have been reading up on motors, you would know about the famous Bass & Walleye magazine test from a few months back. Today's two strokes are just as efficient, if not more than the 4 strokes, and they are much faster and lighter.

Even if I was going to buy a 4 stroke, it would be a Suzuki with the gear reduction. Even the zuki doesnt keep up in speed or fuel economy to the gen 3 Opti's.

If you don't have a sure grip on what you're saying, don't go recommending $15k motors. :rolleyes:

[gumshoe]

A friend in LE has one on a 21 contender and it's got plenty of power - to the point of scary.

Not sure that I'd buy one, though, considering the bad press.

[ANGERCON]

Honestly, do you have any idea what you're talking about?

6gph? Every motor on the market gets 6gph at a certain rpm, and fuel efficiency in general is only relative to the hull.

And who said that 4 strokes are more fuel efficient? If you have been reading up on motors, you would know about the famous Bass & Walleye magazine test from a few months back. Today's two strokes are just as efficient, if not more than the 4 strokes, and they are much faster and lighter.

Even if I was going to buy a 4 stroke, it would be a Suzuki with the gear reduction. Even the zuki doesnt keep up in speed or fuel economy to the gen 3 Opti's.

If you don't have a sure grip on what you're saying, don't go recommending $15k motors. :rolleyes: :stupid:honestly, i do have some idea what i am talking about. if you don't believe me i can show you my certifications for honda, mercury, and omc. go ahead and keep flaping your gums clown. the 2006 honda 225 v-tec is rated 6 gph @ 4800 rpms, and are very dependable. as a matter of fact mobile diver has a pair of honda 130's with 1500 hours, and no major issues. when it comes to suzuki, from what i see they are great engines. new 2-strokes are very comparable, but will not last nearly as long as 4-strokes.
there really is no reason to be rude about this. i was strictly trying to help someone out. so when you get your rectal/cranial inversion fixed i will be more than happy to accept your appology.

chris

[Mariner]

Angercon,
I have certs from Yamaha, Mercury, and Mercruiser. It seems like when these guys get behind a keyboard they become experts,because they've been for boating for X number of years....LOL..I once had a 14 year old kid tell me I didnt know what I was talking about, because he's been boating all his life.. :thumps: I stopped posting on threads like these because they obviously know more :rolleyes: I dont know it all, but my knowledge comes from schooling,(MMI), tech schools my job sends me to, and EVERYDAY experiences. IMHO the best motors are the ones that need fixing.. :D

[AquaHunter]

Angercon,
I have certs from Yamaha, Mercury, and Mercruiser. It seems like when these guys get behind a keyboard they become experts,because they've been for boating for X number of years....LOL..I once had a 14 year old kid tell me I didnt know what I was talking about, because he's been boating all his life.. :thumps: I stopped posting on threads like these because they obviously know more :rolleyes: I dont know it all, but my knowledge comes from schooling,(MMI), tech schools my job sends me to, and EVERYDAY experiences. IMHO the best motors are the ones that need fixing.. :D

Same here Freek! LOL Why do customers add oil to the gas tank thus making the VST's filter clog up and make the engine run lean and blow the powerhead. It's 50:1 premix for only the first 10 hours for the breaking in period then straight gas afterward. MMI, the best of the best......... :thumps:

[Steve Bennett]

:stupid:honestly, i do have some idea what i am talking about. if you don't believe me i can show you my certifications for honda, mercury, and omc. go ahead and keep flaping your gums clown. the 2006 honda 225 v-tec is rated 6 gph @ 4800 rpms, and are very dependable. as a matter of fact mobile diver has a pair of honda 130's with 1500 hours, and no major issues. when it comes to suzuki, from what i see they are great engines. new 2-strokes are very comparable, but will not last nearly as long as 4-strokes.
there really is no reason to be rude about this. i was strictly trying to help someone out. so when you get your rectal/cranial inversion fixed i will be more than happy to accept your appology.

chris

I wasn't trying to flame you at all, but I'm sure you know what it's like when someone gets on the forums with 5 posts and throws out "I heard this brand is the better than this brand and you should only buy this." If you do have certifications with all of those brands, more power to you, and you will be an asset to the board!
I do have a question for you though, is that 6 gph @4800 on just on the block or on the propshaft or what? Obviously this number would differ from hull to hull and prop to prop, so where do they measure that?

[Grin]

200HPDI is very reliable and has been raved continually about since it was introduced in 2000.
250 HPDI is known for blowing powerheads and was discontinued when the 250 4 stoke came out. The worst of the bunch. Avoid at all costs.
300HPDI had major issues with fouling plugs and some powerheads for the forst two years they were out. MAny people dumped them out of frusteration and I'm sure there ar emany for next to nothing available. They still make them. You don't seem top hear anyone bitch about them anymore. Yamaha claims they fixed all the issues. I would probably avoid it if I could. I certainly would not buy a new one. I would pay extra to have them swap a new one off a new boat I was looking at for a 250 4 stroke. It would be money well spent.

[Spearchuckerz]

Im gonna call bullshit on the 6 GPH on the Honda at 4,800. Seems like if you have worked on motors that long it would seem strange for a similar tech. motor to burn 50% less fuel.

Looks to me like about 12-14 GPH just like every other 4 stroke on the market. Its not a magical motor. Its just another 4 stroke.

Boat test.com third set of numbers is GPH.

link http://www.centerconsoletest.com/boats/917/test_results.aspx


Test Power: 1 x 225-hp Honda 4-stroke RPM MPH
Knots GPH MPG NMPG Range NM Range dBa
1000 4.2 3.7 .9 4.94 4.3 356 309 66
1500 7.0 6.1 1.6 4.38 3.8 315 274 72
2000 8.0 6.9 2.6 3.12 2.71 224 195 76
2500 13.3 11.5 4.1 3.23 2.81 233 202 80
3000 19.6 17.0 5.7 3.44 2.99 248 215 84
3500 25.7 22.3 8.0 3.21 2.79 231 201 84
4000 30.2 26.2 9.8 3.09 2.69 223 194 85
4500 33.3 29.0 11.5 2.9 2.52 208 181 87
5000 34.3 29.8 N/A N/A N/A N/A N/A 89
5500 39.3 34.1 16.7 2.36 2.05 170 148 92
6000 42.2 36.7 20.8 2.03 1.76 146 127 98

[ANGERCON]

i am not trying to pick fights here. just trying to help out where i can. the numbers on fuel economy were what was taught in my honda govt certification course at MMI in orlando. the numbers put out in the class for the 225 were 6gph @4800rpms, and 9 gph @wot. if they are wrong i am sorry, i was just passing along what i was taught.

[Steve Bennett]

the numbers put out in the class for the 225 were 6gph @4800rpms, and 9 gph @wot. if they are wrong i am sorry, i was just passing along what i was taught.


They must have been trying to sell you guys some motors :p No motor on the market over 150 hp gets single digit gph at wot. The general rule of thumb is to just divide the hp by ten and that's how many gph it will burn at wot. I guarantee that motor burns atleast 18ph at wot.

[ANGERCON]

i know the rule, that is why i was so impressed with the numbers. unfortunately i only have the older 90's and 130's so i can't go out and play with the 225's, i mean test them. i would never play around on a govt. vessel.