If that is so, the motor and transmission are over loaded and are at risk from the time you put the boat in gear regardless of the throttle setting. I have seen people avoid replacing the water pump to the point where corrosion caused a bushing to seize the lower unit drive shaft in the housing not allowing the engine to even crank over! As for gear oil, change at the end of every season!. Just for performance on the engine and running at optimum efficiency. Too much pitch (over-propped) - the engine won’t reach its max RPM, is sluggish getting on plane, and has poor throttle response. They'd all prove treacherous for a propeller-driven outboard, but a jet drive is all over it. There is a well supported theory that normal break in procedures aren't effective in seating the rings on four strokes, leading to petrol in the crankcase. Both steps take ~1 hour and as you do it the less time it will take. I will carry 2 tanks in the forward below deck compartment when in remote locations ( propped open). Rocky-bottom rivers. They’d all prove treacherous for a propeller-driven outboard, but a jet drive is all over it. When was the last time you really checked your propeller thoroughly?, have you noticed a drop off in speed?, does your boat vibrate more than it used to?, does it use more fuel?, chances are that most boat owners will have experienced one or more of these symptoms at some time, if so the following tips could save you money and make your boating a more pleasurable. Boat Propeller Selector Guide. is the engine temp overheating on the gauge? and that motor should hit around 4900 rpms easily, could have risers going bad but should be overheating, hate to say it but I would scan it, other wise you just guess and throw parts at it, scan tools run around 5 large deer. I would think the boat in question is slighltly under propped. With more than 10. Last thing I forgot to include was the significance of the 5 blade 19P prop. I have an Evinrude 40 on the back of my Lowe 170, about a thousand pounds including the motor. The f30b performs poorly on same vessel in comparisson to old 35 evenrude 2stroke. Don't go down but settle into the boat for a while, its a light boat with a centre keel they never turn real well, my light centre keel boat turns like a cat, over propped can increase the. the demo 150 was slightly over-propped and could have done with a 17in prop. to that of a 60hp four-stroke outboard and a. Any thoughts or opinions?. Yamaha’s Jet Drive four strokes, can boldly go where no propped outboard would dare. I have a 2. I've started looking for a 10- or 9-pitch prop that will let me hit the rev limit of 6200 RPM. Ventilation causes include excessively tight cornering, over-trimming of the engine, and mounting an outboard motor too high on the transom. Over 5250rpm your horsepower won't increase much. The outboard does not have the luxury of "shifting gears" to help develop power either. Most of the marine V8's are calling for a WOT of around 4800-5000 rpm. If the market use is fishing, for example eel fishing - you need to make sure that the operator had the outboard propped. Srandard T-Top, in stainless tube of 48 and 33 mm and windscreen on silent blocks protect you from the sun and the bad weather with a devastating look!. This is the outboard in question it's a Mercury 30 horsepower two stroke. This effect was made even worse by people over-propping the motors. Your Marine Parts and How to Source, www. I mix my fuel with VP Racing methanol and VP Racing castor and VP Racing nitro and Klotz synthetic oil. ) It will go about 32 MPH on the water, so its not super fast, but the shallow draft when at plane is amazing. As far as I can tell I am still a bit over propped. is the engine temp overheating on the gauge? and that motor should hit around 4900 rpms easily, could have risers going bad but should be overheating, hate to say it but I would scan it, other wise you just guess and throw parts at it, scan tools run around 5 large deer. I never have a need to go any faster than 8-10 mph cruise speed, anything above that and the boat becomes an exhausting handful to operate (not fun at all). A high-pitched prop can deliver top speed, but a prop that is “too tall” can result in a boat that has a hard time getting up on plane. Rake can be progressive meaning it increases as you move out from the propeller hub to the blade tips. the Muskegon River, a hot spot for spring fishing in West Michigan. Don't go down but settle into the boat for a while, its a light boat with a centre keel they never turn real well, my light centre keel boat turns like a cat, over propped can increase the. Tips for selecting the right props for multiple engine installations. If your having problems with your outboard engine your in luck Outboard Clinic works on all major lines such as Suzuki , Yamaha , Mercury , Polaris , Honda , Johnson , Evinrude , seadoo. The same Sisu with a planing hull would go faster much easier on smooth water. is 4200 rpms, trimmed right. I have seen that the full throttle RPM rev range for this motor is 5000-5800 rpm, but unloaded and unintentinally I have hit 6000-6050 rpm. If a 2 stroke 5500 wide open is about right, if a 4 stroke should be 6000 wide open. 5 gear sets and props are Mercury 17" Rev4, it is currently a little over propped, looking at going back to 15's. I am yet to decide on the outboard. Running outside of the manufacturer's recommended RPM range - This is a shockingly common problem. I used to run my inboards between 3000 and 3200 rpms but run my outboards 3800 to 4500. Most outboards need a solution to help prevent this damage, and that mixture is usually added to the fuel and then run through the machine. It's about 19 years old and has only seen very light use in freshwater before if over propped it just can. This forces the bow to stay down and slice through waves rather than lift over them. unless youre dead set on a yamaha, you can buy a merc 15hp for less than a 2-stroke yamaha. The Evinrude marine outboard motor uses a water pump in the lower unit case to circulate water through the engine passages and manifold. Using the "back" button on your browser,. ” This high-torque operation puts a tremendous load on the pistons, crankshaft, and bearings. 5 gear sets and props are Mercury 17" Rev4, it is currently a little over propped, looking at going back to 15's. Nothing is more important to the proper performance of your Stingray than the condition of the propeller. Why are Wide Open Throttle (WOT) RPM so important? As I have mentioned in a previous blog post, what WOT RPM you are getting along with your current propeller size and pitch are the most important numbers for us to determine which props you can and should be running on your boat. being under or over propped) or you may simply want to gain better fuel economy. But we are over propped and with bottom paint. One can imagine how over-propped that rig must be at plane off if the rpm is correct at high speed with so little prop in the water. After both dives, we all came up with. They'd all prove treacherous for a propeller-driven outboard, but a jet drive is all over it. Bass Pro Shops® XTS® Rod Sock keeps your high-tech line guides and inserts from becoming scratched, extending life of your rod and your line. The first rule for driving on rough water is to tuck the outboard's lower unit in. But, instead of telling us the real story behind Sound City closing, we're told that what has fucked up the music industry is the evil of Pro Tools, because Pro Tools allows untalented people to make records. definition of - senses, usage, synonyms, thesaurus. The stations can be propped up on bricks, cinderblocks, rocks, timbers, bits of driftwood or whatever else is readily available. Can I ask what do these terms means- firstly from an end-result perspective: does over-propped mean that a boat will reach hull speed before hitting full revs and under-propped mean that even at full revs you won't reach hull speed?. more pitch) wouldn't it be the same as starting in a LOWER gear rather than a HIGHER gear? I always thought that "lugging" is trying to start out in a higher gear (under pitched prop), just the opposite from what I am reading. I think you are very over propped. This Mercury-exclusive feature allows boaters to maintain engine speed (rpm) regardless of load or condition changes – such as rough water, tight turns, tow sports and lower speeds on plane – without having to frequently adjust throttle position, a first for the outboard industry. Our gut feeling was that we had a prop issue and the boat was over-propped and loading up. was over-propped however I may end up eating some Crow. The all new 2010 Yamaha outboards – Preview- but I would question propping as a boat can be propped for excellent holeshot. 7 out of 5 stars for Mercury 115 HP EFI in Outboard Motors. So, with the flip of a switch, I raised the 430’s bridge deck via electro-hydraulic actuators thereby revealing a relatively cool, elbow-roomy ER beneath with centrally located mains and, outboard of them, a couple of fuel tanks fabricated of epoxy-coated welded aluminum. They’d all prove treacherous for a propeller-driven outboard, but a jet drive is all over it. Untalented people have always made records, and the entertainment business has always propped up pretty faces as artists. Call 954-926-5250 to order large Mercury outboards. I’m just not a fan of singles to go over 120. Going out on a limb here---I would recommend not going over 19P on the props if you end up getting that DF350. This Mercury-exclusive feature allows boaters to maintain engine speed (rpm) regardless of load or condition changes – such as rough water, tight turns, tow sports and lower speeds on plane – without having to frequently adjust throttle position, a first for the outboard industry. With no gearcase or propeller extending below the hull, a jet drive allows you to manoeuvre around or pass over obstructions that would limit the travel of a conventional, propped outboard. This is the range used while operating your boat on plane. You will also find that they will if preoperly propped and trimmed run 5 K for not much decline in MPG. If not closely monitored it will introduce course changes when your not expecting it while under power. A 175 outboard is not a 175 Jet. 2018 Princecraft Ventura 190 Deck Boat Boat Test & Review. About to put a 6" jackplate on and a 4 blade prop. We also give the customer time after delivery to run the boat and play with additional props if they want. Features may include: Maximum Overall Performance. I've selected this prop for watersports, so I lose several MPHs on the top end. , oil-injected. The setup basically enables the prop to run flush with the tunnel, or bottom of the hull, just like a jet drive. The ones with the older engines will die if you wind them up like that. ( I've only been doing one or two full throttle passes then bringing it in and running it unloaded to cool down. The Mercury F2. And they're kind of complicated and they do often go wrong but in this case it was almost completely missing. I wanted to keep the cooling water from spinning off back into the hull, so I put the outboard cover back on. The boat runs great-once Im on plane, but seems to struggle at hole shot. They also cannot be adjusted like a propped motor can if the RPM's are too low because of a heavier payload. Just need a clearer picture, before I decide to re-power or not. Mastry's over fifty years of experience in marine power application has prompted Suzuki to authorize Mastry Engine Center to provide boat builders with Suzuki motors and rigging components. There’s a 35 Carolina Classic in this video around 5:30 also. RE: Outboard Life Expectancy? I just repowered my 23' SeaCraft with a Honda 225 from Honda Dude, Eric, Specialty Marine in Oxnard. Overheating after 15-20 minutes sure sounds like the impeller. Boat Propeller Fit Guide. Is that a 4 stroke or 2 stroke Yamaha. My old motor was a 93 Evinrude Oceanrunner that had about 300 hrs on a rebuilt powerhead, do not know how many actual hours were on the motor. 21 December 2018. The commander is the perfect size for both leisure family cruising and the diehard fisherman. The only bigger prop available was the Yamaha standard 3-blade that I think is 11. What does the tachometer say? Aeration - Air getting in from a leak in the line anywhere can lead to overheating. Hi Tony Welcome to the forum. The gimbals were replaced and new SEI standard and counter rotation outdrives fitted. Jetpack, I took the prop nut off and the prop is a Octura 1740/3. All engine manufacturers specify a wide open throttle rpm range which generally falls in the 5000 - 5500 or 5500 - 6000 range with some even higher. Those are prohibited in B. Consider the words Mercury Outboard and Lemon. It just levels off so it is posible to still get 40 mph and be propped down a bit. Prop-free, you can off-road without worrying about breaking a. With the dust settled and rethinking this, I think you are over propped for that 21' boat. I sure hope the Outboard Church can make a strong showing beyond KingofBeers & my slow turd. Boat Prop Selector Guide. If you're boating at 5000rpm, you're about 1400rpm from where you should be. #outboardspecialties #repower #suzukimarine #proppingiskey #props #propsmatter #ultimatereliability #fuelefficiency #largediameter. It’s not only the smallest E-TEC but also the world’s smallest production direct-injection outboard engine, and there are a lot of big new features in this very small package. The wrong prop could cause your engine to dog it a bit, under-revving or over-revving depending on whether it's under or over-propped. Rough numbers etec 150 fuel consumption at WOT is about 15 gallons per hour times 5 hours is 75 gallons of fuel consumed one gallon of oil to 75 gallons of fuel seems in the range of reason for the duty cycle you are describing. Call 954-926-5250 to order large Mercury outboards. Make sure you get it propped correctly so it can reach max rpm with your normal payload. This made the engines louder throughout the RPM range and one of the engines "made oil" when the 100 hour service was completed. This can be done with an outboard jack plate or transom bracket. As far as I can tell I am still a bit over propped. Been triple towing for over 45 years and have had some bad experiences. When we use the term over-propped or oversized propeller, we are talking about the diameter or pitch being too large for the engine horsepower-to-load ratio. Srandard T-Top, in stainless tube of 48 and 33 mm and windscreen on silent blocks protect you from the sun and the bad weather with a devastating look!. Cleaver Cup. We are slighltly over propped, but get along very nicely on the Weaver and suchlike. Regardless of brand, today's modern outboards will give excellent service - IMO at least 6,000 hours. View online Manual for Mercury 9. Everywhere I go on this island I get the screw. We had a pretty bad ice storm earlier this year and I'm using my chainsaw quite a bit. well that was kind of my point. I have seen that the full throttle RPM rev range for this motor is 5000-5800 rpm, but unloaded and unintentinally I have hit 6000-6050 rpm. 5 Wareagle stick steer pretty close to the same weight as yours and not as performance oriented as your hull. A 175 outboard is not a 175 Jet. Slip is a measurement of propeller efficiency as it turns through the water, the normal range is 10-15%. The real tests to determine if you’re over-loaded. Lugging, therefore, is the situation where the load of the propeller exceeds the power available from the engine, and the engine is "lugging. The outboard usually starts very well and runs reliably. 21 December 2018. Rough numbers etec 150 fuel consumption at WOT is about 15 gallons per hour times 5 hours is 75 gallons of fuel consumed one gallon of oil to 75 gallons of fuel seems in the range of reason for the duty cycle you are describing. None of the storage and transport cost or hassle. The water pump keeps the motor within normal operating temperatures. 2018 Yamaha F40 Jet Drive Fits 20 in Outboard. I still get roughly 40mph but turn about 6200 rpms to get that. Hans Holmen who worked for Evinrude Sweden called me and said that Huzells and Evinrude has picked me and one other Swede to get the new Evinrude 65 SS ( for free) that was designed to be a winner. On a more serious note how do you like the 1900 tyee. Incredible Maneuverability: With no gearcase or propeller extending below the hull, a jet drive allows you to manoeuvre around or pass over obstructions that would limit the travel of a conventional, propped outboard. If a 2 stroke 5500 wide open is about right, if a 4 stroke should be 6000 wide open. I put the motor on it's nose and propped it so it was level with plug holes up, and then poured the cylinders full as I could get them. Whether you are buying a new propeller for your boat, simply in need of a replacement for a prop you lost/damaged, trying to address a performance issue (e. Raindrops, Roots Propped Kayaking through the mangroves was one of the most exhausting but peaceful experiences of this trip so far. Maintaining the battery with a solar panel charger is a good way to prolong the life of a marine battery. It is obvious that only one of these propellers will let the motor rev up to recommended range. definition of - senses, usage, synonyms, thesaurus. The commander is the perfect size for both leisure family cruising and the diehard fisherman. 5 is the smallest four-stroke Mercury portable outboard motor — and it’s perfect for bigger displacement dinghies. As certified Suzuki dealers, we can offer highly competitive prices that only other Suzuki dealers can match. You cant beat on an inboard over 3400-3600 rpms even if they are new. Propped and trimmed right, that Javelin should have a lot more low end torque than the 2000 25 HP for getting it up on plane. Not to mention the saltwater can freeze the lower unit bolts on so you want to keep those free and greased. Yamaha's Jet Drive four strokes, can boldly go where no propped outboard would dare. Cincinnati Christian to close at the end of fall semester. Im thinking the 9. I did this for 2 days, and finally got some movement, I just kept adding the concoction to it and finally I got it to turn over a full turn. Rocky-bottom rivers. If the engine is running the stock 25/30hp prop intended for light boats then your 15 would be over propped. 37: A cruise prop should come up about 50 to 100 rpm shy of redline at level flight if the engine is producing proper power. ” This high-torque operation puts a tremendous load on the pistons,. It will provide fast acceleration or “hole shot,” but may cause the engine to over-rev before reaching optimal speed. Boat Propeller Fit Guide. A 175 outboard is not a 175 Jet. I also think it is important to know where someone sits before they tell you where they stand. A climb prop should come up to about redline or redline +50 rpm in level flight. When we use the term over-propped or oversized propeller, we are talking about the diameter or pitch being too large for the engine horsepower-to-load ratio. So I think it's just been over propped for looks. We package all necessary rigging items along with Suzuki outboards that the boat builder will need to install the power package. Light load, boat trimmed properly ( Did your dealer demonstrate proper trimming for different rpm ranges?) the rpm should be in the upper range of specification even 100rpm over 6100rpm would be completely acceptable. The results are only as good as the data you enter. 2018 Yamaha F90 Jet Drive Fits 25 in Shaft Outboard Motor for sale. Move a kayak or canoe from your car or SUV to the water's edge with the kayak and canoe dolly. On outboards without power trim, this angle is adjusted by changing the hole in which the adjustable tilt pin is inserted. If it's a 4 stroke you are a little over propped. There’s a 35 Carolina Classic in this video around 5:30 also. 135 OPTIMAX Outboard Motor pdf manual download. Jetpack, I took the prop nut off and the prop is a Octura 1740/3. Rocky-bottom rivers. You may be expecting too much from the 5. Srandard T-Top, in stainless tube of 48 and 33 mm and windscreen on silent blocks protect you from the sun and the bad weather with a devastating look!. m-y wedge will position and self-center. Suzuki’s dedication to creating the finest 4-stroke engine technology has made them unmatched in marine outboards. Whether you are buying a new propeller for your boat, simply in need of a replacement for a prop you lost/damaged, trying to address a performance issue (e. unless youre dead set on a yamaha, you can buy a merc 15hp for less than a 2-stroke yamaha. I have a 2013 24SL with a Mercury 150 4 stroke. I think you are very over propped. ^ F40 Jet Drive on a 72-month term at 5. The newer 4 stroke outboards are bullet prove. Cost of borrowing is $5,515. 2019 Yamaha Outboards F90 Jet Drive Yamaha Marine F90 Jet Drive Yamaha s Jet Drive 4 strokes, can boldly go where no propped outboard would dare. The trouble is that having two large displacement cylinders, even with one piston up and one down, creates an imbalance that requires a lot of effort to overcome. professor48 is right on IMO. Winterizing your boat is one of the keys to an increased lifespan. 8m Fairlite Gull dinghy in 2008 I've been wanting a low-emission portable outboard to match this hull's efficiency. 0 reduction) that could be smillar pitch -The standard yamahas that SW fitted to the 1000 were actually quite over propped (no other prop option so too bad) so they were allways labouring. i am concerned that my performance curve indicates that my boat/engines are under-propped (not enough pitch or diameter). Yamaha’s Jet Drive four strokes, can boldly go where no propped outboard would dare. How many hours does an outboard last? Dive Boats 4-Sale You can get 2000 hours out of a pair of 2 stroke outboards but not if they are over propped. 135 OPTIMAX Outboard Motor pdf manual download. being under or over propped) or you may simply want to gain better fuel economy. Whether you are buying a new propeller for your boat, simply in need of a replacement for a prop you damaged, trying to address a performance issue (e. 49% APR and MSRP of $8,886. This effect was made even worse by people over-propping the motors. White-water rapids. You need to prop to Mercury's recommended RPM range which is 5800-6400. Basic Propeller Info. For the few times I ever needed to go beyond the reach of an outboard, a pirogue was dragged behind that got me in the skinny water holes just fine. This is only due to the motor being incorrectly propped, so the motor cannot reach the ideal rpm/max power that the outboard can deliver. ^ F150 Jet Drive on a 72-month term at 5. being under or over propped) or you simply want to gain better fuel economy, we can help you find the perfect propeller for all of your boating needs. It is propped with a 15 pitch Vengance prop. I've read various posts commenting on an engine being over-propped or under-propped. , oil-injected. I highly recommend working with someone who knows their stuff. Based on a 57ft with 33hp I agree with your findings. The trouble is that having two large displacement cylinders, even with one piston up and one down, creates an imbalance that requires a lot of effort to overcome. Boat Prop Selector Guide. No, I'm referring to a Mercury outboard engine. , making it easy to transport your watercraft longer distances without any hassle. They'd all prove treacherous for a propeller-driven outboard, but a jet drive is all over it. The HT yamahas spin a big prop with a 2. I don't like the hydrofoils, too much potential damage to the lower unit. Never any issues - except it came new propped for a much heavier boat, which caused it to go into overrev/limp home mode every time I ran over half throttle for more than 30 seconds. When a boat is over-propped it means that the engine is not working at its optimal torque range. 5 Wareagle stick steer pretty close to the same weight as yours and not as performance oriented as your hull. " If this occurs before the maximum engine speed occurs the engine is said to be over-propped. Over-propped engines are subject to lugging and damage under continued operation. We are slighltly over propped, but get along very nicely on the Weaver and suchlike. Cost of borrowing is $5,515. Whether you are buying a new propeller for your boat, simply in need of a replacement for a prop you lost/damaged, trying to address a performance issue (e. They’d all prove treacherous for a propeller-driven outboard, but a jet drive is all over it. I'm willing to be schooled but I saw hard data 20 years ago about the efficiency of inboard pumps. RE: Outboard Life Expectancy? I just repowered my 23' SeaCraft with a Honda 225 from Honda Dude, Eric, Specialty Marine in Oxnard. The areas handed over include the cold and hot basins, the water cooling pumping station, the heat exchange zone, and the water treatment facility. Mastry Engine Centers announced today that they have developed a program to help owners of older two-stroke outboards make the right decision to trade-up to a clean burning, smooth running, quiet. Commercial guys get around 8 to 10 K hours as mentioned above. If not closely monitored it will introduce course changes when your not expecting it while under power. Incredible Maneuverability: With no gearcase or propeller extending below the hull, a jet drive allows you to maneuver around or pass over obstructions that would limit the travel of a conventional, propped outboard. The outboard usually starts very well and runs reliably. We’ll focus on the 30CB for this review, but the interesting thing about these boats is that the running performance and build is remarkably consistent, and the only things that really change are amenities, onboard elbow room, and whether or not you prefer an inboard diesel over the modern outboard-drive, when available. Just for performance on the engine and running at optimum efficiency. The prop performs excellent, It pushes my boat up on plane very quickly. Every Outboard Specialties Repower gets seatrialed and propped correctly. This is a 3. What's your opinion? A. The KC-Dolly-Seat Canoe and Kayak Cart is designed to dolly boats with a wide or hybrid shaped hull. Boats should be propped so they operate in the recommended top rpm band with a full load of fuel, gear, and people. The ones with the older engines will die if you wind them up like that. If the boat is a little over propped or underpropped. Jolly Roger. Mercury 115 HP EFI: 11 customer reviews on Australia's largest opinion site ProductReview. Just like on an outboard if it was really over propped it would not turn the RPM that it needed to. 5 x 16 prop fully loaded and in LB as above, we were only able to turn 5600RPM that was good for 32Knts (37mph). I didn't get any photos of what I'm about to describe but next, I propped up the outboard end of the tank so that the entire inboard baffle including the vent fitting would be covered in fuel. Preventing Problems in Outboard Motors. Correctly propped, a four-stroke outboard is the nearest thing to having an inboard diesel, but without the initial expense or servicing costs down the track. Thanks a lot. It tops out at about 27 MPH in Colorado. White-water rapids. Quote Reply Topic: Motor height and prop questions Posted: 07/29/2012 at 6:37pm Ok i'm getting tired of the poor performance vie been getting on my boat, I know I'm propped wrong because before my rebuild it would turn 6300 rpms. ( I've only been doing one or two full throttle passes then bringing it in and running it unloaded to cool down. @Bacon, the biggest thing with under-powering is to make sure it is propped correctly. She is a 17,000 lb. I’ve had 2 Grady’s before my 28CC and liked them. it isnt the most important thing but i like power as much as the next gearhead and jetdrives just dont offer like prop. Jolly Roger. You guys are confusing me with the over propping and underpropping. This can be done with an outboard jack plate or transom bracket. The trouble is that having two large displacement cylinders, even with one piston up and one down, creates an imbalance that requires a lot of effort to overcome. Basic Propeller Info. Example: does twin 50’s make your boat twice as fast now that you have double the horsepower to 100 hp? Would twin outboards totaling say 200 hp be as fast as one outboard with a 200 hp rating under equal conditions?. None of the storage and transport cost or hassle. I was over propped. So too is the condition of the propeller as well as the gasoline and motor oil you use. 5 hp outboard on a specially designed tiny little trimaran. Went from a 13 X 19 to a 13 X 15 and that fixed the problem. If your having problems with your outboard engine your in luck Outboard Clinic works on all major lines such as Suzuki , Yamaha , Mercury , Polaris , Honda , Johnson , Evinrude , seadoo. I was so surprised at how well that boat went. I believe I could push it to mid to high 50s if re-propped but isn't a requirement for how I use my boat. Regardless of brand, today's modern outboards will give excellent service - IMO at least 6,000 hours. The anti-ventilation plate was just below the keel, and when running it was buried in the water. When the engine is over propped (i. White-water rapids. I was over propped. Last thing I forgot to include was the significance of the 5 blade 19P prop. So, it is not uncommon, for an outboard to actually perform a little better (high RPM and boat speed), on a lower pitched prop, especially if it was over propped to begin with. like kc said, merc and yamaha have had joint efforts for years until a recent feud caused them to break their partnership. The SS 4 blade 14. How many hours does an outboard last? Dive Boats 4-Sale You can get 2000 hours out of a pair of 2 stroke outboards but not if they are over propped. , oil-injected. Mastry Engine Centers announced today that they have developed a program to help owners of older two-stroke outboards make the right decision to trade-up to a clean burning, smooth running, quiet. Press the calculate button to display the results. Conclusion: The engine run time below indicating that the engine was not run over 4,000 rpm suggested the boat was not propped according to the manufactures specification of 4,800 – 5,200 rpm. Trim Tabs are more expensive but 100 times better. Long story short, I went ahead and purchased the engine yesterday evening. Everywhere I go on this island I get the screw. Cost of borrowing is $5,515. 5 horsepower portable right up to the new flagship V6. You may want to find a good marine mechanic to sort out your issue. Designed for outboards with single-ram power-tilt systems, plus kicker motors with power-tilt systems. If you need a place to trash that motor i can pm you my address. From there, my partner says, the price eases up the ladder depending on which Mercury. Some people prefer to have their engines slightly over-propped (ie not being able to reach max rpm on a wide and deep waterway) so that for canal cruising, the engine sounds like its not working hard. It may have been under propped and over reved. I used to run my inboards between 3000 and 3200 rpms but run my outboards 3800 to 4500. It gets hairy in heavy traffic but such is life. Move a kayak or canoe from your car or SUV to the water's edge with the kayak and canoe dolly. Recently, Bernard Sweeting, an angler from Spanish Wells, St. Boat Propeller Fit Guide. but I’m not referring to the planet Mercury, nor the Mercury automobile, nor the mercury in thermometers. Maybe wishful thinking but that is my thought. 2018 Yamaha F90 Jet Drive Fits 25 in Shaft Outboard Motor. Over a 10 year period that is low hours so the engine may retain high resale for the boat. The houseboat was bucking like a bronco, the wind was increasing, the rain was torrential, and by dawn, the anemometer was recording 40-gusting to-60mph, and the docklines began to snap. A sentimental expression crossed his face. Yamaha’s Jet Drive four strokes, can boldly go where no propped outboard would dare. We also give the customer time after delivery to run the boat and play with additional props if they want. And it is propped correctly. " He adds that the performance of perhaps 50 percent of the boats powered by smaller motors that are shipped from the outboard manufacturer with a "standard" prop - generally 40 horsepower and smaller. The wrong prop could cause your engine to dog it a bit, under-revving or over-revving depending on whether it’s under or over-propped. Any thoughts or opinions?. If not closely monitored it will introduce course changes when your not expecting it while under power. 2018 Yamaha F40 Jet Drive Fits 20 in Outboard Motor for sale around or pass over obstructions that would limit the travel of a conventional, propped outboard. Boat Propeller Selector Guide.