Gas consumption, Yamaha VS Opti

[howler]

how dose the 4 stroke Yamaha 200 Plus HP compare to a Merc Opti 200 plus HP, please compare apples to apples 200 vs 200 250 vs 250 ect.

[cast_and_blast]

Here is one for the F250 on a Ranger 620vs:
http://www.yamaha-motor.com/assets/products/otb/bulletins/bulletin_4stroke_hpv6_vmax_rng-620vs-f250txr.pdf

Here is one for the Merc Opti 250 ProXS on a Ranger 620vs:
http://www.mercurymarine.com/look_deeper/third_party.php?ID=86&SortBy=Title&Section=outboardChecks&optimax200250=7&optimaxProXS=8

Not quite apples-to-apples as the ProXS puts out more than 250hp, but the best I could find.

Scott

[PJM]

Howler

All the big motor use gas no matter which way you look at it. They all seem to do like 2.5 to 3.5 mpg on the average and it does not matter the brand. The Yamaha is a good cruising motor and quiet
but it is not a water sking engine. The Opti will have the better hole shot and might be a tad bit better on gas but not as quiet.

[howler]

Thanks Guys, good info

[SLE]

yeh,the big motors like their fuel but I can say for a fact that my 05' 225 Opti pushing a 19ft Yarcraft Storm will yeild nearly 5.5 mpg at 30mph and 4.3 mpg at 40 mph. Wide open I can push towards 58mph and my smartcraft monitor reads just a hair over 20 gph, so at WOT I'm right near 3mpg. I'm fairly certain the opti will be a bit more fuel effiecent than the Yamaha 4 stroke, of course at the cost of increased operating noise. The opti would also be the better performer all the way around when it comes to acceleration and speed. I would suspect the Yamaha to have a longer life being a 4 storke but there are lots of 2 strokes with 2500 hrs out there running around! It's really a horse a piece, both are good, you need to decide whats more important to you. I purchaced mine because thats what was on the boat, had it been a 225 Yamaha, I guess I'd be driving a yamaha, it wouldn't have bothered me either way.

Just one quick question, have you considered a verado?? There suppose to be the best of both worlds, 4 stroke operation with performance of a 2 stroke.

[Might want to ask around]

I think the perf report from Yamaha is a little..... optimistic???

I don't know of any 250 yamaha that goes 60. reason? if it does it's empty and allows the engine to run a higher pitch prop and still get on plane. otherwise the same pitch and a full load will not plane the boat.
Tru speeds are from 54-57 with a normal load and 2 guys and ok hole shot

Its between the Opti and the E-Tec for that application for hole shot and top speed. Fuel economy will be close between the 2.

Thought you might want to know.

[turtle chain]

I see this outboard thing like all these motors are good ,our season here in wisconsin is short so you should get 15 to 20 years of hard use to burn up one of these motors so that being said what do you want to do,I like to get up on plane and stay there even a low speeds top end I like but not a must .But load that boat down with every one and thing you have and put the hamer down witch one gets this rig up on plane right now that is all that matters to me, the gas milage and quiet motor is 2nd on my wish list and if you ski at all you need these things (max power all the way )you may not need it ? But when you run 30 mph now what is your fuel consumption I think the big motor 4 strokes have some work to do yet to make me happy maybe I am wrong but this is the way I see it thanks guy's

[staylor]

...nothing you can do about it no matter which brand of boat and motor you run. After reading these posts I thought back to my old 21 ft glass boat w/225 Evinrude with its three big 2 barrel carbs- I used to get about 3 mpg if I was lucky. As a comparison, I dug out my GPS this morning and checked the mileage on my 17 ft. Starcraft w/150 Opti. This boat is rigged light and has a total wet weight with me in it of 2100 lbs. Propped with a modified 4 blade Trophy Plus in 21 pitch at a steady 40 mph I'm running at 3800 rpm which is the Opti 150s sweet spot for cruising economy- and the Smartcraft gage says 5.4 gph which works out to 7.4 miles per gallon. At 45 mph I'm at 4200 rpm but the mileage is way down to 5.6 mpg. Top end with this prop is 62 mph at 5700 rpm on the little Starcraft- as long as I can keep the chine walking under control.
Doug

[no way]

no way a four blade prop is pushing that Starcraft at 62 mph. If that's gps speed you need to recalibrate it. This would also mess up your mpg figures since they also seem a bit high. As a rule, a 150 hp motor has a fuel rate of 15 gph at wot(10% of horsepower) I believe your numbers are off.

[staylor]

Remember I told you it was rigged light- and I mean light- single console, cut down windscreen, total gear weight of 40 lbs for speed runs, 180 lb driver, 6 gallons of gas. Motor is up 3 holes, lower unit has been edged, resurfaced and rigged with a torque tab to reduce crab angle. All gear is carried aft so the boat top ends with trim in mid-position, any more trim than that and I risk kiting. I have 2 GPS units and both give the same speed. Chine walk sets in at 57 mph and the chine must be counter steered to prevent a barrel roll. Best speeds to date are 62 mph with the 21 Trophy from Mark's Props, 63 with a radically altered Trophy 23 that has a so-called "Allison Cut", finished by Mark after I did the cut. Best prop is a 21 Tempest Plus from Rich Boger- it runs 64 but is very hard to drive with. Heck, this is my slowest boat since 1981. My previous ride was a 21 Checkmate w/225 that ran 73 GPS with similar mods, and before that an 18 Baja w/175 that ran 68- pre-GPS but with a calibrated offshore race speedometer. You'd be amazed how many "80 mph" boats I've beat over the years. If you want to consider what is possible with light weight- just look at an Allison Bass boat- 20 ft long and it will run 80 with a 150 hp motor- because it's very, very light, similarly the old 1970s Hydro-Streams will run almost as well. When they finally cleaned up Lake Erie in the early '70s and the fish came back, I re-rigged one of my old race boats into a fishing boat. This was a 13 ft D-Stock Utility, flat bottom wood with non-trip chines, bare hull weight 150 lbs. Rigged with a wheezing $100 Merc Mk55 40 hp motor it ran 45 mph with an old bronze prop. In race trim with a "stock" Mk58 Merc 45 hp powerhead on a Merc KG9H 1:1 ratio lower unit spinning a tiny bronze 2 blade race prop it ran 56 mph. It's all in the horsepower to wet weight ratio for boats of a specific bottom type.
Doug