First, it promotes incomplete combustion of the fuel and the oil due to reduced combustion temperatures. What is the correct fuel/oil ratio for a 1999 kx250 ?? To understand why the residual oil is so important, you have to understand what happens to the oil in your fuel when it goes into the engine. Very nice. On a modern 250, that can be as much as 4 horsepower. Copyright © 2020 Multiply Media, LLC. Looks like it's time for a little pre-mix 101. TEST BIKE WEIGHT, NO FUEL: 230 lb. The engine produces a maximum peak output power of 55.60 HP (40.6 kW) and a maximum torque of  . I'll try the TTS in our bikes as well. Anywhere between 40:1 and 32:1 for your fuel/oil ratio. Now, I realize that 18:1 is impractical unless you ride your engine all-out, keeping it pinned at all times. Changing fork seals and clutch on a bike tell you about the previous owner? Thanks. Any more oil than that, and the engine ran poorly, because we didn't have any jets rich enough to compensate for that much oil in the fuel. They also need oil to provide a complete seal against the bore surface. Now we come to the issue of ring seal. he said to run a premium and race gas mix to help this, race gas will make it run much cooler b/c of precise ignition. While there isn't a magic "one-size-fits-all" mix ratio, and it is possible to use too much oil for your conditions, generally speaking, more oil is better, within certain limitations. With that said, to have that amount of residual oil in the crankcase at 50:1 (a ratio made popular by magazines and oil bottles), you can't be riding very hard, or your bike is jetted richer than necessary simply to deliver enough oil. Simply put, the rings alone can not effectively seal the cylinder. I used to run 26:1 in my 250's because I was a fast, aggresive rider that would wring every ounce of performance out of my engine. I have seen more than one person mention that on a 2005 KX250. I run 32:1, track or trail, and make minor jetting adjustments (usually just a slightly leaner pilot) when I'm just doing some trail riding. Maxima Quick 2 Mix Cup Bottle Stroke Pre Mixture Ratio Oil Banshee CR YZ KX RM (Fits: 2000 Kawasaki KX250) 5 out of 5 stars (7) 7 product ratings - Maxima Quick 2 Mix Cup Bottle Stroke Pre Mixture Ratio Oil Banshee CR YZ KX RM If it's more, you are running more oil than you need for your conditions. We used specially calibrated jets to ensure the fuel flow was identical with each different ratio, and warmed the engine at 3000 rpm for 3 minutes before each run. :D. Awesome chokey:applause: I try to tell people at the track this all the time because they think that oil changes the rich or lean situation. and i do not know what the gas fuel oil mixture ratio should be and what octane gasoline i should be makigng the mixture with. In general, super unleaded is recommended, but I have read a few people mention that a certain model may ping under high stress or load, even when jetted properly. 0 0. faccone. This is an interesting read that also supports my "more oil is better" claim. I'm not sure what ratio the previous owner ran in the KX250, the RM100 owner said he was running 40:1. I just bought a '02 KX250 for me and a '03 RM100 for my son. As for stopping power, the Kawasaki KX 250 braking system includes Single disc size  at the front and Single disc size  at the rear. The reason for the difference in output is simple. If you have a spooge problem, you have a jetting problem. Contact US. You can sign in to give your opinion on the answer. E.g You want to mix your fuel at 40:1 and you have 8 liters of gas. Regarding the chassis characteristics, responsible for road holding, handling behaviour and ride confort, the Kawasaki KX 250 have a  frame with front suspension being  and in the rear suspension it is equiped with  . Stock tire sizes are  on the front, and  on the rear. When the gasoline enters the engine, it evaporates, dropping the oil out of suspension. All Rights Reserved. Now Im I just wasting my time and should I just stick to one oil ratio? Does Jerry Seinfeld have Parkinson's disease? I run Motul pre-mix at 40/1. If you need to alter the air/fuel ratio, do it with brass, not oil. Inverted telescopic fork (adjustable) , 300 mm / 11,8 in – KX250M-R, Swingarm Uni-Trak with mono-shock (adjustable), 310 mm / 12,2 in – KX250M-R, Single disc, 225 mm, 2-piston caliper – KX250-R, Single disc, 200 mm, 1-piston caliper – KX250-M, Single disc, 215 mm, 1-piston caliper – KX250-R, 10.3:1 (low speed), 8.8:1 (high speed) – KX250-K, 10.8:1 (low speed), 9.0:1 (high speed) – KX250-L, 10.1:1 (low speed),8.6:1 (high speed) – KX250-M1, 10.5:1 (low speed),8.8:1 (high speed) – KX250-M2, 10.5:1 (low speed),9.1:1 (high speed) – KX250-R, 1.687 – KX250J-K; 1.625 – KX250-L; 1.437 – KX250M-R, 1.388 – KX250J-K; 1.333 – KX250-L; 1.176 – KX250M-R. Kawasaki KX250: manuals, parts, microfiches. An easy way to work out the right amount is to take the volume of gas in mls and divide it by the ratio you want. Ideally, you want this puddle to be between 1/8 and 1/4 inch. If you use enough oil, you can jet the bike at it's optimum without starving the engine of oil, and have excellent power, with minimal deposits and spooge. Lv 4. Kawasaki is guilty of letting down its guard and letting the rest of the bike become dated. But, the jetting is right for my area so make sure yours is for your altitude. I always run at least the highest pump octane I can find. Our tests were performed in the rpm range of 2500 to 9000 rpm, with the power peak of our test bike (an '86 YZ … I don't usually get into ratio discussions, because mix ratios are like religions to most people, and they tend to be closed-minded and hard-headed on the subject, but I'll put in my $.02 here anyway. The 1990 variety makes use of 32:a million even although different fashions use something between 20:a million and 40:a million. It was probably past due by all accounts. 9 Answers. 91 or more octane is fine. Kawasaki KX250 2000, Fuel Filter by Outlaw Racing®. Making slight adjustments to your mix ratio in an attempt to alter jetting is both backwards and misguided. 25:1 (pronounced 25 to 1) means for every 25 parts/units of petrol you must add 1 part of oil. The incomplete combustion of the fuel and oil promotes deposit formation inside the engine. The Kawasaki KX250 is a 2-stroke motocross motorcycle that was introduced in 1974. If the combustion chamber temps are too low, such as in an engine that is jetted too rich, the oil doesn't burn completely. Made in Japan. Choose a mix ratio that is adequate for your needs, and jet accordingly. I never have had a problem! Im wondering if this could be because of my mix ratio not being right, Im running 50:1 with maxima super m. My '06 calls for 32:1 which is how I run it, even with high quality synthetic 2 stroke oil like Klotz R50. We tested at 76 degrees F, at 65% relative humidity. You don't get rid of the spooge by reducing the oil, you get rid of it by fixing the jetting. I have been using it since 1982 in all of my 2-stroke bikes. Asked by Wiki User. I used to run 26:1 in my 250's because I was a fast, aggresive rider that would wring every ounce of performance out of my engine. If the plug starts to get sooty nonetheless off the ratio. From BikesWiki.com, Japanese Motorcycle Encyclopedia, Kawasaki KX250: Service Manual, 1992-1993, KX250-J, Kawasaki KX250: Service Manual, 1994-1998, KX250-K, Kawasaki KX250: Service Manual, 1999-2002, KX250-L, Kawasaki KX250: Service Manual, 2003-2004, KX250-M, Kawasaki KX250: Service Manual, 2005-2008, KX250-R, https://bikeswiki.com/index.php?title=Kawasaki_KX250&oldid=7938, Inverted telescopic fork (adjustable) , 310 mm / 12,2 in – KX250J-L, Swingarm Uni-Trak with mono-shock (adjustable), 330 mm / 13,0 in – KX250J-L, Single disc, 220 mm, 2-piston caliper – KX250J-M, Single disc, 190 mm, 1-piston caliper – KX250J-L, 10.9:1 (low speed), 9.3:1 (high speed) – KX250-J, 49,0 Nm (5,0 kg*m) / 7500 rpm – KX250-J, KX250-L. You need to be a member in order to leave a comment. I trail ride mostly and the bike runs absoutly perfect. You don't choose a mix ratio based on "spooge" or plug fouling, you choose the ratio based on the amount of oil your engine needs to provide sufficient protection and adequate ring seal. The rest becomes the dreaded "spooge". I have ran Klotz Super Synthetic in my race bikes for years at 50:1 and it runs perfectly. Best Food delivery bag/cooler to use on the tail end of Cruiser motorcycles? This will provide sufficient heat to consume the premix oil. Two Stroke Fuel Ratio Chart. 40:1 on my KX250's. And what brand and type is the best to use ?? Kawasaki KX 250 Engine and Transmission Technical Data: Engine type - Number of cylinders: Single cylinder, two-stroke : Engine details - Fuel system - Engine size - Displacement - Engine capacity: 249.00 ccm (15.19 cubic inches) Bore x Stroke - Compression Ratio - Number of valves per cylinder - Camshaft Valvetrain Configuration - ... Husqvarna fuel mixture ratio is 50:1 manual says 32:1 the previous owner was running 50:1 with superM racing premix. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of … One of the most intellegent, well thought and concise replies on how 2T jetting and oil mix ratios work. Front Brakes Dimensions - Disc Dimensions, Engine size - Displacement - Engine capacity, Recuperation 60 to 140 km/h in highest gear, Fuel Consumption - MPG - Economy - Efficiency. When an engine is jetted too rich, the excess fuel leeches heat from the combustion process, causing the combustion chamber temperatures to be too low to effectively burn the oil, or even completely burn all of the fuel. I have a question: Sometimes I compensate for temperature changes and where I ride by the amount of oil I use. Change consent People believe that the oil just rushes right through a two-stroke along with the fuel, but that just isn't so. ©2020 Ultimate Specs - Motorcycles - But if you ran 87 octane you might not even notice it. my piston melted onto the cylinder from it getting so hot. We started at 10:1, and went to 100:1. And up to a point, more oil will provide a better seal. 2012 600rr has only 7000 miles? For my bike 90 octane or above is recommended. The same goes for plug fouling. 2000 kx 250 mix ratio? http://www.amsoil.com/storefront/atp.aspx. Kawasaki KX250 2000, Fuel Petcock Repair Kit by K&L Supply®. Along the same lines, someone that pushes the engine harder, and keeps the revs higher, also needs to use higher oil concentrations to achieve the proper residual build-up. The spooge is nothing more than unburned fuel and oil passing out the exhaust. I barely passed the CMSP (California MSF). What should I do? Go here and enter the year, motor size and model or vin number. I run Castrol TTS in my bike. i have recently aqquired a 1984 kawasaki kx250 2-stroke. Im wondering if this could be because of my mix ratio not being right, Im running 50:1 with maxima super m No one ever broke an engine by using too much oil. I have 2004 KX250 and i mix it at 40:1. Kawasaki KX250 (KX250J-R, 1992-2008): specs. When was the last time you did a top end? When did organ music become associated with baseball? Answer. It finished fourth in the 2000 250 shootout. Pay attention boys and girls, this gentleman is 100% CORRECT. One small point. Wiki User Answered . What is the rising action of faith love and dr lazaro? The bottom line? The key to all of this working in harmony is to jet the bike lean enough to achieve a high enough combustion chamber temperature to burn the oil, but also still be able to supply enough oil to protect the engine. What ratio should we be running in our bikes for our riding style?

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