Don't have to use the tabs at all. We recommend using the auto if your meter has it. The way my boat is set up and sits now I can float in 7-8" of water. So even when the prop is higher than the bottom of the boat, it sits far enough back to work in solid water. At the end of last season, it ran, but would not idle smoothly, and needed fiddling. If the height of the boat transom is off it can cause major issues. Use this in conjunction with a stainless steel outboard lock that sits over the outboard thumb screws, or makeup one with some stainless pipe offcuts, to keep the boat and engine secured together. Minn Kota My 30' Scarab does this now and I only moved my motors back 4" from where they were. Breakers, Boston Whaler, 1972-1993, Manual jackplates also offer wedge, which is the angle at which the outboard sits relative to the transom. Placing the motor just 1/ 4-inch to / 2-inch above the opti-mum setting will result in cavitation and power loss. i have used strands from regular electrical wire. The height of the boat transom dictates the size of the outboard motor. Trim your outboard down and into the proper position. Lifetime Premium Member; 391 778 posts; From: Gate City, VA; Report; Share; Posted March 10, 2015. What Should You Do If An Outboard Has Been Sitting For Awhile? Note: This motor support can be cut down to size, if your outboard sits too high or you have problems with tilting your motor high enough to install this support. IS my outboard too high? I was told it should since its a 18ft bowrider & not a bassboat but when i would hammer down on the throttle the motor would rev up but barely move. Copyright 2019 IBOATS. to remove ads between posts. When working with the outboard motor, you want to turn the dial to 200. I had heard 1 inch up for every 4 inches back, but someone a couple months ago on another thread had a more exact formula. You have to remove the carb bowl and clean all the passages and jets with some type of probe. :thumbsup: Yeah..a bit too much set back. Please help. Oil Level is Too High This could very well be a sign that water has gotten into the oil somehow. You DEFINITELY do not need it one inch or more below the transom-- just more drag and less speed for the fuel you burn. Hope these help. When a boat is over-propped (the propellers have too much pitch), the outboard (s) highest achievable RPM is lower than the manufacturers recommended wide-open-throttle RPM, which typically is 4-inch too high. If it is too high, you will be losing water pressure. You may need to make a few timing adjustments or replace a spark plug, or you may need serious mechanical inquiry. The longer an engine sits in storage with old fuel in the carb, the more certain this problem will occur. By Lee Morgan. A reverse transom that sits too high can impact the propellers of the motor and motor bracket. Get the Top End Right. Hey all- The motor is a 2008ish 9.9 high thrust. Especially with a heavier motor. Was that the right choice to make or was i way off to begin with? How many Outboard Engine Hours are too many when buying 2nd hand and used outboard engines? Step 4 Turns out some boat builders are letting transom height get closer to 21 inches or 26 inches. Please help me. Good distribution of weight on a Jon boat is essential if you want to get the boat on plane. View Full Version : Please help me. It will only bounce in dead-flat fresh water. If you assume engine sits low or high on transom it's a matter to visually check when at full plane at which lower leg height water flow is paasing by. The Yamaha Trailering Motor Support can be cut to size, if your outboard sits too high or you have problems with tilting your motor high enough to install this support. The outboard sits fairly high as it is and the trim is pretty good, so short of going back to heavy Nicads what would be the best first step? One of the most common ways an outboard can fail is when it overheats during use. The difference between a 16-7" Whaler's speed with its motor set way too low on the transom with a mediocre propellerand set at the optimal height on a jack plate with a really good prop could be as much as 5 Just out of curiosity, how much more does this motor weigh than the original, and how much more setback do you now have than you had originally? Simply cut the Motor Support to the appropriate length using a mitre or hacksaw Fitment: For both two and four stroke models, 8 - 115HP with a single ram power tilt assembly only. Must have a well ballanced boat trimed so to ride paralell to water level, anticav plate included. I read on one of the bracket manufacturers websites before that a 30" set-back should allow for a 2-2 1/2" increase in the mounting height of the engine for most hulls. Trim tabs are optional fins that rest on the back of boats with outboard motors to adjust the angle of the bow while you accelerate. If everyone sits at the aft of the boat then the stern will sit too low in the water and getting it up onto plane will be extremely difficult. Ok so i originally had a 20" shaft motor on my boat & the prop didnt sit below the bottom of the transom. This will keep the prop in the water when the boat pitches in waves, or hobby-horses. Check While Running. Re: Outboard mounted to high or to low? Simply cut this motor support to the appropriate length required using a saw. In fact, there are a few common problems with modern outboard motors that crop up again and again. Having the cavitation plate a bit lower than the transom is preferable to having it too high. My experience with several older Deep Vee Glastrons is that it is possible to run quite nicely with the cavitation/anti-ventilation plate one inch higher than the apex (point) of the vee. The last change I made was to increase the motor timing which got me more speed but also the chine walk. This can improve holeshot and rough-water ride because the angle is going to push the transom up, the bow down. LarryMc. For the same reason that high-speed performance boats use surface-piercing props. Since the center of gravity has been moved so far back there is nothing you can do but trim down, or tab in unless you bring the motor closer to the transom. My Outboard Motor Runs at High Speed, But Will Not Idle. Dont set it at 2,000 or 20,000, as these are just too high, with a good meter, you will have an auto setting. Typically, what you think is a fuel pump issue is generally another component failing, such as a fuel pump diaphragm or bad check valve. With the outboard already bolted to the transom, the best option was installing a transom jack. First thing to check is if the bottom of the boat is flat or nearly flat at the back where it rides. Praolini installed Mercurys digital electronic controls in the Axopar. NOTE: The Universal m-y wedge can be cut to size, if your outboard sits too high or you have problems with tilting your motor high enough to install the unit. A long 24 is perfect for the job. & Circuit The tabs are fighting agains the boat and creating drag- it is keeping you flat but scrubbing speed. Important: The Yamaha Trailering Motor Support can be cut to size, if your outboard sits too high or you have problems with tilting your motor high enough to install this support. If it has rocker (like the shape of a rocking chair) on the ride pad, you will never stop the bounce IMO. An outboard isnt much good without controls, but motors dont come with them. Heres how to make sure that your outboard is at the correct height by using your anti-cavitation plate as a guide: Find a straight edge that is around 8 to 10 long. I think the problem am having are all symptoms of the outboard being too high? Note: The Yamaha Trailering Motor Support can be cut to size, if your outboard sits too high or you have problems with tilting your motor high enough to install this support. See if a high-end motorcycle lock can be deployed in such a fashion as to lock off, or up, the outboard engine so it cannot be used. Once the water under the boat passes the trailing edge of the transom, it angles upward. Sign up now. Outboard manufacturers are now recommending that engines be mounted higher than the old standard, provided boat speed justifies it. The motor is what powers the boat so the two go hand-in-hand. Please help! This also applies to gear. Simply cut the Motor Support to the appropriate length using a mitre or hacksaw. If you don't want re-rig your motor maybe try to move some weight around. 224 Mako cc. Carb cleaner spray will not fix it. Run it again and have someone back there look down at the cav plate, my guess is that it is underwater at speed which also will not help your problem. Scream And Fly Powerboat and High Performance Powerboating Discussion Forums. When purchasing outboard motors and used boats it is usually a toss up between an outboard motor with high hours, or an outboard with low hours, but has been sitting for long periods of time without being used. Remove the Spark Plugs & Oil The Cylinders, Replace Plugs if Needed. Shop If the bow is too low, your gas mileage suffers and you wont be able to accelerate very well. I can use tabs or full down trim to stop it, but it's slower all the way around. Simply cut the Motor Support to the appropriate length using a mitre or hacksaw. Strip the insulation off any multi strand wire and twist 2 or 3 strands together. Riptide Terrova 80 Trolling Motor w/i-Pilot & Bluetooth, Marine Electrical Panels It may not display this or other websites correctly. If the oil is too high and its milky its crucial to immediately get it fixed as soon as humanly possible. GPS Chartplotter and Fish Finder Combo, http://www.veradoclub.com/smf/index.php?topic=137.0, http://continuouswave.com/whaler/reference/engineMountingHeight.html. Two of the most common problems when it comes to fuel supply in your outboard motor are bad fuel and a bad fuel filter. Okay so KENMYFAM i got the pics you wanted to show a better look at the transom. When the water had a light chop, the hull bounced just enough to ingest high levels of air into the in-take foot. Better Gas Mileage, Too. After spraying some carb cleaner in the air intake, it would spark, but not start. This is a shockingly common problem. If your not hearing the prop blowout, then you may actually be too low with your mounting and causing the problem to be worse. Jun 22, 2017, 12:26 AM #2; AirDOGGe. There are a number of different reasons for why this happens; from a blockage or damaged component within the cooling system, to low engine oil, or a faulty thermostat. Theyre not only easier to use, but easier to install, too, and have more features. My boat does the same thing when im trying to go slow and the only way to stop it is with the trim tabs. Peter's estimates of speed gain are very low. On this type of boat, if you are in doubt, default to the longer-shafted outboard. My dad's 23 Action porpoised like hell when he put a v8 on it. I also agree that the 250 YAMAHA is a pretty heavy beast to be hanging on a 30" setback on a 22 foot boat. Try out a 4 blade sternlifting propeller that can be mounted higher, and raise your engine up some. If this has happened, the oil will have a milky look to it. 7-9 and 7-10). Switched to Bravo I four blade prop and the propblem is gone. agreeing with the comments above: too much setback, maybe weight distribution will help. If the front of the boat, called the bow, is too high, you wont be able to control the boat in the water. But I do agree once I have it I will probably want to try other things too. One thing you might want to try is a 4 blade propeller. BTW: This is measured with the plate parallel to Adding more wedge pushes the top of the motor mount out and pulls in the lower unit closer to the bottom of the transom. Adjusting the mounting height of an outboard on the boat transom can affect performance and Powered by vBulletin Version 4.2.3 Copyright 2021 vBulletin Solutions, Inc. All rights reserved. 224 Mako cc. As in all things relating to outboard performance, experimentation is the key to optimization and an adjustable jack-plate does make that much easier. How To Soundproof An Outboard Motor. Store Universal m-y wedge in any boat compartment for convenience. Your outboard motor is the heart of your marine vessel and if it is having trouble with the fuel supply, it can put a damper on your day on the lake, river or ocean. The coil is driven with direct current from an outboard power supply that plugs into an AC outlet. Last edited by RaisedByWolves; Jun 22, 2017 at 01:35 AM. This is where trim tabs come in. After properly storing for the winter, it would not start. Thankfully, outboard fuel pumps dont fail often. By raising the engine to take away some of the props ability to push the bow up and instead make it push the boat forward. All rights reserved. Workboats, sailboats, and displacement-hulled boats fall into this category. To remove Universal m-y wedge simply trim outboard to up position and remove. Quote; Link to post Share on other sites. IS my outboard too high? You must log in or register to reply here. LarryMc 391 Posted March 10, 2015. If youve done all that you can to soundproof the boat and you find that the noise levels are still too high, you may need to provide passengers with earplugs or earmuffs to supplement the effects of the work youve done. Re: Motor mounted too high on transom? The fuel pump on an outboard motor works differently than the one found in your car or truck. When the cylinder leaks, the pump pulse signal isnt strong enough to get the right amount of fuel to the cylinder. Check the Condition of the Gear Lube. Boat Gel Coat - Spectrum Color. For a better experience, please enable JavaScript in your browser before proceeding. The propellers will also have trouble reaching the water. I have to agree with STV_Keith, you have to much setback. Problem is you have move the center of gravity too far back in the boat. The motor was too high but mounted as low as possible. You are using an out of date browser. In fact, a growing number of boat builders are building their faster outboard-powered boats with transoms 1" to 3" above the standard height (usually 20"). Buyers choose their own and most folks will go digital unless theyre on a strict budget. For those of us who know the quick fix solution, however, these problems are easy to take care of. Edited March 10, 2015 by kahrp45andy. These will leave some of us sitting at the dock, wishing instead of fishing. I was told the prop was blowing out (cavitating) because it wasnt low enough so when i repowered the boat i got a 25" shaft motor which really gets the prop below the transom. This current flow through the coil creates the magnetic field against which the voice-coilgenerated magnetic field pushes and pulls. Ensure all crew and passengers are evenly distributed on the boat. If your outboard engine is sputtering at any speed, idle or full throttle, it could be the result of several common malfunctions. JavaScript is disabled.

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