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Now I'm getting serious about a re-power!!! After what First-Light posted about 26.2 gph @ 5,000 rpm with the twin 250 Suzuki's, I've gotta make a move. The 52+ gph I'm burning @ the same rpm is nuts!
NOW, here's my dilemma.............
I love the F225's, don't love the price and not sure if they will fit the bracket on the 26 Regulator since the F225's are 28" to center.
I will go with the Z200 HPDI's, happily, unless someone tells me otherwise, like they have the 26 with the 200's and think it's a bad idea. I would like to go with four strokers, to get away from checking/adding oil and noise and smoke, etc. but if 200 HPDI's burn 1/3-1/2 the fuel as my 250OX66's, I'll consider it.
I am definitely interested in the 250 Suzuki's and they are definitely less than the Yammies AND I've been told they will fit my transom.
H-E-L-P!!! I have money I haven't spent yet!
Actually, I pretty much blew my wad when I "stole" the Regulator, but the motors should pay for themselves if it's true what I'm told about how much fuel I'll save! If they (the F225, Z200 & Suzuki 250) burn 1/3 less fuel, it seems to be a no brainer!
Now let the fun begin!!! Which pair should I go with???
Thanks, Bob.
RE: 200 HPDI's, twin F225's or twin Suzuki 250's?????
For my next boat, I'm going to do my best to stay away from 2 strokes.* It would be nice to troll all day and not have to worry about fouled plugs.* It would also be nice to not have to worry about buying oil and carrying an extra couple gallons around in the boat all the time, not to mention having to fill the oil tank every now and then.
So, if you were me , that would leave the yam 225 vs the suzuki 250.
The suzukis have more horsepower, cost less, and turn*large diameter*props.* How can you go wrong with them?
RE: 200 HPDI's, twin F225's or twin Suzuki 250's?????
F225's - great engines, but will not fit your bracket - better said they will not fit the mounting holes as the F200 & F225 Yamahas are the only 6 cyl outboard (2-stroke or 4-stroke) that require 28" mounting centers vs 26" centers for every other 6 cyl outboard. You may be able to adapt your bracket, but add a hassel factor.
200 HPDI's - great engines, but would be on the light side for a 26 Parker, but if you're not a hot rodder, this may be the best choice. Great weight factor savings over either the F225 or 250 Suzy.
You can definately purchase a pair of 250 Suzy's for less than a pair of F225's, and I'm prejudice so that's all I'll say about the Suzuki's.
RE: 200 HPDI's, twin F225's or twin Suzuki 250's?????
You WILL NOT burn 1/2 to 1/3 the fuel going the same speed. If you looked at his numbers, he topped out at 6200 RPM. 5000 RPM is 80% throttle. Your 2-strokes probably top out at about 5000 RPM, and therefore are making full power. His speed was about 44mph at 5,000 rpm and 55 mph topped out. The power required at 44 mph could easily be just a little more than half of what is required at 55mph. Try comparing your fuel burn at 80% throttle to his at 80% throttle, and it should be much closer. It does not take into account differences in hull efficiency, however, so isn't a perfect comparison.
If you look at any comparison test in the boat mags doing a direct comparison of two-strokes and four-strokes on the same hull, with the same weight, you will find fuel burn at cruise and top end is not that different. At idle, four-strokes probably would burn 1/2 the fuel of two-strokes.
RE: 200 HPDI's, twin F225's or twin Suzuki 250's?????
Quote:
speirs - 7/22/2004 5:53 PM
You WILL NOT burn 1/2 to 1/3 the fuel going the same speed. If you looked at his numbers, he topped out at 6200 RPM. 5000 RPM is 80% throttle. Your 2-strokes probably top out at about 5000 RPM, and therefore are making full power. His speed was about 44mph at 5,000 rpm and 55 mph topped out. The power required at 44 mph could easily be just a little more than half of what is required at 55mph. Try comparing your fuel burn at 80% throttle to his at 80% throttle, and it should be much closer. It does not take into account differences in hull efficiency, however, so isn't a perfect comparison.
If you look at any comparison test in the boat mags doing a direct comparison of two-strokes and four-strokes on the same hull, with the same weight, you will find fuel burn at cruise and top end is not that different. At idle, four-strokes probably would burn 1/2 the fuel of two-strokes.
If they burn the exact same for a whole day trip, which is highly unlikely. Probably 10% less for the day. Either way, if you burn 100Gal of gas for the day, you just saved $30 in oil. Over 100 hours averaging 12GPH that's 1200 gallons of gas and 24 gallons of oil or $600. This is versus a $90 oil change for both motors. If they get 10% better fuel mileage that 120 gallons adds up to another $240 in savings.
RE: 200 HPDI's, twin F225's or twin Suzuki 250's?????
Speirs makes some good points, and you ought to look at the numbers closely if large gains in economy are the sole reason you are condidering a repower at this point (that is, your OXs still have life left in them).
In any event, 20-30% improvements in range/economy are commonly cited by various manufactures - that is what Yamaha claims for the 4 strokes when compared to its own conventional (not hpdi) 2 strokes. I think that's a pretty realistic range for you on a repower, when compared to the OX 250s. Regulator almost certainly has fuel burn numbers comparing the OX 250s and the Yam. F225s (and various HPDI models) at comparable cruising speeds.
I'd be surprised if you could approach a 50% gain though - I've never even seen anyone claim that. The F225s are nice on the Reg 26. If the rigging for the Suzuki 250s is less of a hastle, that may be the way to go. People seem to love that engine (although I have no personal experience with it).
RE: 200 HPDI's, twin F225's or twin Suzuki 250's?????
While speirs makes some good points, but more bad points than good.
You (Parker) have the same starting engines as I did (Yamaha 250hp OX66 two strokes). Your boat weight is probably similar but your 26 Parker has less deadrise than my 27 Contender which equates into a more fuel efficient hull for the Parker. My fuel efficiency when I replaced the Yammy 250 two strokes with 250hp Suzuki four strokes was 25-45% across the rpm range.
RE: 200 HPDI's, twin F225's or twin Suzuki 250's?????
You really ought to give Honda a close look. They (I think) will also fit directly. I am very happy with mine. They can be bought for a LOT less than the list price that scares off many people. IMO (this ought to start a war), the Honda sits right between the Suzuki and Yamaha in HP. My boat is 3-4MPH faster than the 200 Carb it replaced. standing by for incoming.............
I have the Honda Shop manual if you need speciific rigging dimensions.
RE: 200 HPDI's, twin F225's or twin Suzuki 250's?????
Yamaha used to have performance bulletins on their website of the 26 regulator with 200 HPDIs and F225s. Looks like they pulled them to put the numbers for the 24 up there. I still have the ones for the 26. I'll email a scan of them to you if you want them.
RE: 200 HPDI's, twin F225's or twin Suzuki 250's?????
Greg, I don't think I'm gonna sell one at a time and I could still use the same controls for my re-power. Even the Suzuki dealer says I can use the same (Yamaha) controls and guages for the DF250's!!!
sorry....BUT, you never know.
What's the name of your boat Greg? I'm sure we've at least seen each other on the water.
200 HPDI's, twin F225's or twin Suzuki 250's????? 
I have money I haven't spent yet! 
, that would leave the yam 225 vs the suzuki 250.
Great weight factor savings over either the F225 or 250 Suzy.
