Octane for yamaha 4 stroke. VP T4 Fuel - 97 octane, unleaded, and ethanol-free.

Octane for yamaha 4 stroke. Use a higher octane fuel so that even with a drop in octane the fuel will still have sufficieent octane for the engine 3. Bottom line, compression is blowing past the rings and pressurizing the crankcase. 2-liter V MAX SHO motors rated at 200, 225 and 250 hp, and only for 20-inch transoms. typically a two stroke has a much shorter stroke. Inline 4: Displacement: 2. Potent performers, this V-6 big block displacement builds lots of low end torque, in fact, more than enough acceleration to compete head to head with 2-stroke outboards. 79in) Octane 87 / Octane 89: Recommended Fuel Filtration: Yamaha 10 Micron Fuel/Water Oct 1, 2023 · This Yamaha concoction is a potent remedy for 4-stroke outboard motor ills and can perk it up like a potent caffeine energy boost in the morning — only, it lasts a good while. It now features a fresh, new cowling design (with engine-mounted Propeller Indicator Lights if rigged with Helm Master® EX), new integrated digital electric steering*, rerouted exhaust for enhanced reverse thrust and is available in Yamaha gray or pearlescent white. All the newer Yamaha outboards and their components have been designed to withstand the corrosive properties of ethanol fuels, so if you can’t find an ethanol–free gas pump in your area or you prefer to run the E10 gasoline, I suggest you run the manufacturer’s stated octane fuel, and also subscribe to the major brand-name fuel suppliers Jan 27, 2011 · Minimum required octane for all yamaha outboards (except F250 and F350 89 octane) is 86 octane. Virtually all of the carburetor issues will be over. Two strokes strokes are interrupted by ports that would make their "sealed " compression stroke, or displacement far less, could be 50% less. 2-liter F300 is a reliable, offshore favorite—and it's only getting better. Sep 21, 2007 · “We recommend 87 octane for both our two- and four-stroke motors. Both idle much smoother with the non-Ethanol fuel. 00 5. 3-litre engine that boasts a huge 4. Anyway, here's a page from my manual. 00 0 10 20 30 40 F90B Competitor F90A 90 78 65 53 40 BOAT SPEED (MPH) SECONDS Competitor F90B 0–50 ft. Aug 21, 2013 · Re: yamaha 2004 40hp 4 stroke The carburetors in a Yam F40 are particularly problematic. 0 Nm (40. Yamaha VMAX SHO V6 200, 225 and 250 Horsepower 4-Stroke V6 Outboards. #7 07-29-2014, 01:00 PM. This powerful, ultra-dependable V6 3. May 5, 2018 · Manual calls for 95 octane fuel. If F25 jets are installed in an F40 that won't run worth a darn, those F25 jets will make it seem like a new motor. Running a high octane in an engine designed around 87 can contribute to this. Yamaha says the same about your model as they do about an F115. Some high-performance engines may require a higher octane rating than “regular” 87 octane. I know the pump is eathnol but im not sure about stp Feb 21, 2017 · I have a 2016 150hp Vmax SHO. The portable series four-stroke Yamaha outboard ranges in horsepower: 25HP, 20HP, and 15HP. ” Four-strokes have to be fueled by gasoline reaching at least Jun 23, 2014 · Common with Yamaha and Mercury 4 strokes. 9HP. The simple answer is regular unleaded gasoline. Octane 87: Recommended Fuel Filtration: Yamaha 10-Micron Fuel/Water Mar 28, 2013 · PWC Performance modifications for the 4-stroke Yamaha Waverunners FZR, FZS, FX and VX series. But, I do not know what octane I am shooting for. Will my early model Yamaha outboard run okay on standard unleaded petrol (91 Apr 8, 2010 · Re: 9. 2L Yamaha outboard has a range of horsepower: 250HP, 225HP or 200HP. It does not mean it is a higher quality of fuel. I only want to make 4 gallons. Mid-grade is 89 Octane and Premium is in the 90'sprobably 91 or so. 2L four stroke V MAX SHO® require? Yamaha's V6 4. The grade of gasoline is clearly "regular unleaded gasoline". That may not make a difference to you if you’re using ethanol free fuel that’s generally 89 octane or higher, but for us ethanol junkies it saves a good bit of cash. Maximizing the Performance of Your Yamaha 25hp 4 Stroke Outboard In fact, it boasts the best power-to-weight in its class—by more than 65 pounds. Any input is greatly appreciated. Thats my experience with '96 Yamaha 90 4 stroke Degree of Trim -4° through +16° Dry Weight 20″ shaft / 240 kg (529 lbs), 25″ shaft / 257 kg (567 lbs) Steering Angle (maximum) 35° from center, either direction. Good Luck! Apr 3, 2015 · Ethanol content may adversly affect engine performance. P. It is the recommended octane and can be found on your gas pump. It has also become unreasonably expensive. Jun 5, 2013 · My understanding, around here in Chicago, that Regular is 87 octane. Yamaha themselves told me to just put in 89 octane as higher than that can cause the engine to burn hot and that is not good for the engineespecially on Dec 28, 2021 · The all New Yamaha SideWinder 4 stroke Turbo for trail and offtrail. Feb 12, 2015 · Now amp Then: Yamaha's Historic Fours: Yamaha is the only snowmobile manufacturer to ever produce four cylinder production snowmobiles: the 1992 Vmax 4 with a 750cc two stroke and the 2003 RX 1 with a unique 998cc four stroke high performance engine. 8L I-4 F90 horsepower In-Line Four Yamaha outboard is a mid-range four-stroke outboard that is best for recreation boats like a pontoon or fishing boat Nov 21, 2009 · As Light as a Two-Stroke Yamaha will offer 4. ” Additionally, Grigsby says Yamaha recommends the regular use of fuel additives, such as conditioner, stabilizer, combustion-chamber cleaner and gas-line anti-freeze. After one season of pretty high use, I have had no issues. They are made to prevent octane loss. 00 1. typically a two stroke fires every time the piston comes up. 2018 Yamaha 300 HP. Jul 24, 2018 · One important difference to note is that the F300 specs 89 octane fuel, while the F225 and 250 are fine with 87 octane. 61 kgf-m) Page 48 Stabilizer” (Part No. * On top of its impressive speed, it features tech unheard of in its class, including a long-track intake system, free-flow exhaust and knock sensor. Our V6 4. If there is 10. anyway my highest pump is 93 so I started using stp octane booster from advanced auto parts. If 4 stroke, I don't think that Ring-Free makes much of a difference. 00 4. Close Form Find a Dealer Apr 21, 2005 · Ok found and learned somthing new this week. To get there I have to mix 110 octane race fuel which is LEADED. There are very few significant differences between the motors; one perk of getting the F300 is that it’s available in white as well as the standard Yamaha silver Jul 19, 2017 · The YZ250 and its four-stroke YZ250F cousin both have aluminum twin-spar frames, fully adjustable speed-sensitive KYB suspension, and blue-and-white Yamaha bodywork. Mar 24, 2018 · Two strokes have lower cylinder displacement/head displacement (compression ratio) because they inherently produce a greater fuel mixture concentration in ignition compression than a 4 stroke can. Mar 5, 2020 · 50:50 VP C12/premium pump is a good safe fuel. 2L four stroke V MAX SHO outboards don't require special fuel. Use 86 octane minimum unless pinging and knocking is heard. Recommended fuel: 89 Octane; Shaft lengths available: 25”, 30” and 35” Alternator output: up to 70 amp Just a note to let everyone know that Yamaha 225 4-strokes do run fine on third world gas. As the lightest 25 horsepower outboard available—two-stroke or four-stroke—it features the highest power to weigh Jun 23, 2008 · Q. 78 x 3. Yamaha recommends 89 Octane fuel for these engines, but it is unavailable at many fuel docks (leaving a choice of 87 or 91 octane). Mexican Magna Sin is posted at 87 octane, but who knows. Use the Stabilizer like Stabil or Seafoam to help prevent fuel from growing stale or degrading during long periods of time in the tank. Yamaha Outboard F200 Four Strokes In-line 4 / 2. Mine is 87 or higher I think. Install a fuel/water separator type filter on your boat. Unlike four-stroke motors produced by other manufacturers, the quad-cam 24 valve 4169cc V6 powerhead has no steel cylinder liners to add weight. That is not the question. The In-Line Four V MAX SHO ® 115 is Yamaha’s fastest 115-hp four stroke, ever, with a top speed of nearly 51 mph. <br /><br />This week I have been filling up with 87 and noticed a decline in RPMs @ WOT 4500 RPMs and 31 MPH. Any suggestions? Yes I know, use an octane calculator. Mar 18, 2005 · But, as we careen towards a four-stroke future, the four-stroke hop-up business will solidify. 00 7. Best Octane Gas for Yamaha 4-Strokes? Is there any benefit to filling up with Premium 93 octane as opposed to regular 87? I realize that when filling up at the local gas station, both will contain 10% ethanol, so I need to use the Ring Free Treatment. Running high octane fuels in an engine designed for low octane fuel can result in incomplete combustion causing excessive carbon and a waste of money. Regardless of octane, your going to be underpowered above 2000' elevation. My boat holds 290 gallons of fuel. The fuel at our only local marina (Marker 37) only carries 87 octane. It follows the recent trend of many next-gen four-strokes to shed some pounds and get lighter on the transom. The higher the number only means it is more resistant to detonation. 4-stroke fuel advice Just run any 87 octane pump gas, with or without the 10% ethanol. The High Trust four-stroke Yamaha outboard ranges in horsepower: 60HP, 50HP, 25HP, and 9. % ethanol your getting close to the right octane but who knows how much they really put in. 8L I-4 F115 horsepower In-Line Four Yamaha outboard is a mid-range four-stroke outboard that is perfect for your family boat and watersports towing. Nov 3, 2015 · A modern 4-stroke isn't nearly as sensitive to ethanol issues, so I wouldn't worry too much. 6 ft-lb) (5. I am curious if running a mix of 50/50 will harm the engine in any way? I can not find a high octane race fuel that is non leaded. Jul 27, 2014 · 2,933. The 1. I want to cut it with 89 non eth fuel. I was wondering if this was ok becasue my bel ray h1r premix says not to use meathnol fuels. Jul 9, 2013 · When the bottle says it'll raise the octane 2 points,that doesn't mean raising it from 87 to 89. -See "Mercury's View of Ethanol" on Sherm's board at: Mercurys take on Ethanol blended fuel OCTANE: -Standard 4-stroke Engine Models (Including V6/V8 Fourstrokes): 87 Octane -Verado PRO Models: 87 Octane Minimum (improved performance with 91+ Octane) Apr 19, 2019 · Yamaha’s revolutionary F200 I4 inline four-cylinder, four-stroke outboard should prove to be equally as popular in both new boat and repower applications. My new F300 Offshore runs great on it. I want to mix it with 93 octane non ethanol pump gas. Yamaha VF250XB 250HP V MAX SHO Outboards. Running 93 in an engine designed around 87 will burn slower and cooler. 00 2. Most of the fuel stations around here carry 89 octane. All are available with both digital and mechanical controls. I called Yamaha and the rep said that they do recommend 87 octane and they strongly recommend against using octane boosters. I think the F200 wants at least 89 octane according to the user manual. The Yamaha 225's run great with no plug fouling or other problems. Both are Yamaha 4S; 90 and 9. Use a fuel stabilizer. I don't think there would be a problem running the higher octane in a 4 stroke. The V6 V Max Sho Series 4. For those experts on Yamaha engines. you simply CANNOT compare a two stroke to a 4 stroke as far as octane vs power. Yamaha Outboard F200 4-Stroke Inline 4 is an extremely powerful engine in a highly compact and lightweight package. Yamaha says each of these motors – which are identical except for the power rating – has a dry weight (no oil or prop) of 505 pounds. 9 mercury 4 stroke- is premium gas ok? Somewhere I read that Nissan recommended 91 octane in my Nissan(Mercury) 6hp 4 stroke. Blended for stock or slightly modified 4-stroke engines for better protection against detonation. The MXA wrecking crew sat down with a host of four-stroke tuners to analyze the ten most basic ways to get more power out of a thumper. Yamaha's VMAX SHOs are a family of four-stroke outboard motors available in 250, 225 and 200 horsepower. Says "Unleaded, MINIMUM pump posted 87 octane gasoline recommended. Jan 20, 2012 · High octane gas can cause a problem with 2 strokes. Have been running 89 gas in my 90/65 Yamha 4 stroke since last season. It is designed for bass, flats, and multi-species boats. Apr 22, 2008 · Yamaha recommends 89 octane for their F250 four stroke motors. Apr 1, 2013 · “But if that 87 octane degrades 2 points from sitting, you now have 84 to 85 octane, which your boat is not engineered to run on. Pump fuel quality is so crappy now (ethanol) that I have gone to 50:50 Pump/C12 in all of my stock 2 strokes and the run awesome. It says to check with the manufacturer. Caps are mine. The Yamaha F225 is a V6 3. 2-litre displacement that is far larger then any of its 225 competitors. F200 I-4 comes with a ‘fly-by-wire’ digital throttle control option, offering extremely smooth and simple operation. 2mm (3. Nuts and bolts. I've heard that using 87 octane may result in a slight power loss but otherwise would be fine. I am pretty sure I have seen a lower octane, ethanol free, recreational fuel in way northern WI, and in I-Falls, MN, but only find 93 around here. 8L / 200 HP . 00 3. Propeller and Load: Ensure the boat is not overloaded and the propeller size is suitable for the engine and the boat. 9. VP T4 Fuel - 97 octane, unleaded, and ethanol-free. SRX, RTX, XTX, STX and LTX Trail Models Jul 15, 2021 · Picked up a can of sunoco 112. 3L engine takes advantage of variable camshaft timing for improved low and mid-range torque resulting in better power and acceleration. I asked the same question of my Yamaha dealer, and was told to only use ethanol free, even if it is 93 octane. Without knowing the exact compression ratio of the motor, you can only guess the optimum octane needed. Should I run 93, 96, 98, 100 etc etc. NUMBER ONE: HOPPED-UP GAS . This in turn allows the boat to go faster and typically burn less fuel in the process. NOTE: The use of “Yamaha Fuel Conditioner and Stabilizer” eliminates the need to drain the fuel system. Jun 17, 2011 · Hey ive got a 05 yz125 with some mods done. My Ford Expedition with a V8 knocked and rattled on it. 115 HP. 8L: Bore x Stroke: 96 x 96. Especially on hot summer days. 3L 350 hp V6 4. V6 4. The C12 is leaded which has benefits in a two stroke. The 250hp gets its best performance from mid-grade, 89 pump octane fuel, which is the octane most-readily found at on-water marinas. Yamaha Policy: Yamaha requires that all motors must be shipped to an authorized Yamaha dealer. The higher the octane the slower the burn and 2 strokes have only half the time to eliminate un-burnt gas as compared to 4 strokes. The operators manual for my 2003 Yamaha F90 only states that it should be greater than 86 octane. A 10-micron water-separating fuel filter between the fuel tank and the engine will keep water and contaminants out of the engine. Also goes on to talk about the nasty things that can happen with ethonol. Your entire engine is tuned and designed for 87 octane. 2L 300 / 250 / 225 hp In-line 4 200 / 150 hp 115 - 30 hp 115 / 90 / 75 hp 70 / 60 / 50 hp 40 / 30 hp Efficient Fuel Economy: Equipped with a 4-stroke engine, this model boasts superior fuel efficiency, ensuring longer trips with fewer refueling stops. My thoughts: Final octane 96, mixed at 40:1, Castor 927. Enjoy more time on the water without worrying about running out of fuel. Consult your Yamaha Propeller nut: dealer for further details. Year Models 2000 and after are desogned to operate on Ethanol Blends at a maximum of 10% (E10) 1. If you can get 87 ethanol free, that is even better. Apr 9, 2011 · Re: 2001 Yamaha 50 H. There isn't an easier performance mod than pouring VP Racing's Ultimate 4 race gas in May 25, 2014 · Can I possibly damage a 2003 Yamaha F90 4-Stroke motor by running it on REC90 gas? I read somewhere that I should NOT run fuel with an octane rating > 87 on a regular basis. My post was not so much about what octane gasoline to use but more about the statement that use of same can cause poor performance and damage the motor. I don't have a choice, and have been running, storing, and winterizing my boats with 87 octane ethanol gas for two years now, which is OK for the F115 and F150 engines I have owned. And 86 is not a minimum octane. We stress the importance of a good, name-brand gasoline. But you will gain nothing but headaches by running a hotter blend. 3 F 90/F75 YAMAHA MARINE GROUP HOT SHEET 0. Year Models prior to 2000 are NOT designed to operate on Ethanol Blended Fuels. The boat runs 4900 RPMs at 34 MPH. Jul 12, 2012 · yamaha f250, page 9 of my owners manual, says recommended fuel 89 octane. Can't remember where. You'd have to dump a 5 gallon bucket of octane boost in your tank to make a difference. For you guys that are forced to get 91 octane or higher and are The owner’s manual may also specify a minimum fuel octane rating. The 225 seems to be the magic number for a lot of trailerable boats that sit in that 6-7 metre range and the Yamaha does it very well. Apr 29, 2016 · Yamaha even had a tech bulliten out about NOT using 93 or higher octane. Feb 20, 2017 · Not sure of the Octane rating. One number we are not given is the motor octane number, but the formula to arrive at the PON = (Motor Octane Number+Research Octane Number)X2. I bought this fuel additive after my 9-year-old 30HP Yamaha outboard started showing signs of sputtering. I ran 87 Octane in my 250 Yamaha for 6 years with no problems, you will loose a little hp, but no mechanical issues. Nov 1, 2024 · Yep, Marc is right on the money87 octane. 300 HP. Octane 87: Recommended Fuel Filtration: Yamaha 10-Micron Fuel/Water Yamaha's F25 is so light, powerful, and feature-rich that it won a coveted NMMA® Innovation Award shortly after introduction. The Yamaha manual says to run 89 octane fuel. 00 8. Yamaha Outboard F200 V6 4-stroke is a powerful workhorse specifically built to handle the extra loads, higher hours and additional demands required by professional operators. Mar 7, 2015 · What octane fuel does the V6 4. Mar 16, 2019 · Another difference for the 150 SHO and the 250 SHO (others I’m not sure) is that they require 89 octane, whereas the F150 and F250 use 87 octane. 3L V6 F350 is the new knockout offshore. 2018 Yamaha 300 HP V6 is Yamaha’s top-of-the-line model and replaces the Yamaha V8 F300A just as well because it’s much lighter. Available in Yamaha gray, pearlescent white or new classic white, the 4. Pull the head. 00 6. May 31, 2007 · I'm wondering if anyone has had experience using 87 octane fuel in Yamaha 250 hp 4 stroke engines. Oct 9, 2010 · If you want to avoid problems with octane loss from the fuel sitting over a period of time, there are basically 4 things that you can do 1. 2. Are Yamaha PWC's 4 stroke and 2 stroke, designed to operate on Ethanol Blended Fuels. . now some of the F motors require a MIN of 89 octane. LUB-FUELC- 12-00) to each gallon of fuel. Easy Start System: Yamaha's manual start system features a decompression device and auto-recoil for effortless starting Jul 4, 2023 · Fuel: Always use the fuel type and octane rating recommended by Yamaha. <br /><br />Yamaha reccomends 87 but this engine seems to get better performance with higher octane gas. 55. This is when the ethanol can no longer suspend the amount of water it has absorbed from the atmosphere which causes the ethanol and water to separate from the gas, falling to the bottom of the tank which leaves a fuel that is not suitable for use due to the lower octane which can cause the detonation of a piston or to be more direct cause Jun 12, 2020 · The original post didn't say if the motor was 2 stroke or 4 stroke. Being that most fuel stations only carry 87 octane that is the closest you can get. Sep 11, 2012 · Re: yamaha 115 4 stroke Remove the crankcase vent line that runs from the valve cover to the air cleaner and see if its blowing oil vapor out. If you buy the motor, and if you have carburetor problems, remember the Yamaha F25. These motors will replace the V MAX Series 2 two-stroke models in 2010. kuoxg dtho krgf cqe joiomgyu oqv ala lsxwthdv flcio czitnoi