I was thinking about using 89 octane. Will it mess anything up?
What octane gas do you use?
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hucker73
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Only if the "tuning" you speak of includes ignition mapping and changes for the higher octane gas. If it is simply a fuel map, then no, the octane does not matter.
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Jet fuel basically IS diesel. NOt even a valid comparison. A better comparison would be Avgas. It is a high octane gasoline basically. Jet fuel is nothing like gasoline
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It was more a referance to what some people that don't know any better think rather then a comparison to fuel types, as in if they hear jet fuel and think one spark and all hell is breaking loose. I've had people in my garage look over at a barrel of C12 and think the whole place is going to blow up on a warm day. I should have been more clear, I kinda got way OT.
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my 04/1000 has ~95000kms on the clock and all its ever drank is regular 87 octane, runs fine..buying higher octane numbers is a waste of $$..
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Sounds like you guys in the US have a pretty crap standard of fuel. The minimum octane I can get is 91. Anything with 10% ethanol has a minimum octane rating of 94. We also have 95 (premium) and 98 (ultra premium). Some places even have 100 octane branded as 'racing.' I'm not sure if it is the case with bikes, but I know some cars that are US delivered have a lower octane rating than an Australian delivered car (same model) due to your emission laws and more restrictive catalytic converters. My previous car had a minimum rating of 97 while the US version (detuned) had 91. If I used less than 95 the car would detonate and run very rough. I personally use 98 in my bike because I know that it runs better and pulls faster and smoother. Also I get around 40kms (25miles) further on a take running high octane, so it actually ends up cheaper than lower quality fuel. My bike is a standard 750 tuned for a yoshi slip on. I don't think you can say that a higher octane fuel is a waste of money and pointless as it varies from bike to bike. Just try it. If you dont notice a difference then stick with the rating on your bike...This is a MINIMUM rating btw, higher can't hurt.
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James, you all use a difference method of measuring octane :thumbup
Some places use RON (research Octane Number)
Others use MON (motor octane number)
We use an average of the two, Called AKI (anti knock index) or R+m/2.
So the same fuel here with say 87 octane on the pump, might be actually 91 where you are :thumbup
Your seat of the pants dyno, that it pulls smoother and faster more than likely is wrong. Dyno it, and see. Mileage is an entirely different ball of wax. The burn rate of the fuels are different as well. Not to mention, making POWER is typically horrible for fuel mileage. Higher fuel mileage usually means slightly lean, which usually makes poor power.
Some places use RON (research Octane Number)
Others use MON (motor octane number)
We use an average of the two, Called AKI (anti knock index) or R+m/2.
So the same fuel here with say 87 octane on the pump, might be actually 91 where you are :thumbup
Your seat of the pants dyno, that it pulls smoother and faster more than likely is wrong. Dyno it, and see. Mileage is an entirely different ball of wax. The burn rate of the fuels are different as well. Not to mention, making POWER is typically horrible for fuel mileage. Higher fuel mileage usually means slightly lean, which usually makes poor power.
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91 is usually the best you can do in California. Some gas stations used to sell 100 (Unocal or 76 markets it as "Race Fuel"), but those who do have had little or no stock due to the high price.
So I tried a tank of 87 octane and just got through running through it the other day. I noticed a drop in fuel efficiency by about 5 mpg. However, I did not notice a drop in performance. It did not knock any from what I could tell. I ended up refilling my empty tank with 93 octane because I met a fellow rider at the pump who said if I rev 8000 rpm or higher on a regular basis I should stick with 93 or it will eventually start to knock. I'm not sure how technically sound his advice was but I figured I'd rather get better gas mileage and use 93 than not use it and possibly damaging something. I think after this tank burns up I'll try 89 octane for a few tanks and see how it affects stuff.
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He was full of shit :thumbup. RPM has nothing to do with it. It has to do with compression and ignition timing.
5mpg drop can be attributed to riding style or even weather. These bikes are VERY susceptible to mileage variations depending on you you ride.
For example, an 06 600 is capable of getting 45 or so MPG. I generally only get 15 or so........ on track.
5mpg drop can be attributed to riding style or even weather. These bikes are VERY susceptible to mileage variations depending on you you ride.
For example, an 06 600 is capable of getting 45 or so MPG. I generally only get 15 or so........ on track.
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when I first got my 97 gsxr 750 I had to ride it home, but before getting on the highway I stopped at a gas station and filled it up with 87. When I was done I started it up and it ran exactly 30 seconds before it stalled and died. After that no matter how many times I would try it just did not want to start. I ended up buying a siphon and pumping the gas into a gas jug, so I can put 91. Once I filled it up with premium it started up right away.
I haven't experimented ever since, but I think mine prefers 91. I later got a tune up done, so things might be good now, but I don't like being left stranded.. Besides, my bank won't break with premium fuel. It would be a different story if I were driving a lamborghini, or a hummer..
I haven't experimented ever since, but I think mine prefers 91. I later got a tune up done, so things might be good now, but I don't like being left stranded.. Besides, my bank won't break with premium fuel. It would be a different story if I were driving a lamborghini, or a hummer..
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i use 87 in my bike.. i add Startron fuel cleaner in the tank 1oz with the gas i use every fillups.. No problems.
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I highly doubt it had anything to do with the octane. More than likely there was some water in the fuel, and when you siphoned it out, you took the water out as well.
I already answered this :lol
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I am sure no one is jet fuel is not Diesel Moto Joe as my rc jet uses Jet A1 which is basicly Kerosene. I would hate to try and start a turbine on diesel.
In the USA your Fuel is measured as an average of Ron and Mon which is called AKI Anti-Knock Index and yes Our Australian 91 is the same as your 87 but not sure if you have a 95 or 98.
In the USA your Fuel is measured as an average of Ron and Mon which is called AKI Anti-Knock Index and yes Our Australian 91 is the same as your 87 but not sure if you have a 95 or 98.
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I never said Jet fuel is Diesel. I said it is similar. And Kerosene is pretty similar to Diesel as well. The three (Kerosene, Jet fuel, and Diesel) are much closer to each other than they are gasoline.
Jet fuel is a mixture of hydrocarbons, ranging in carbon chain length from C8, to C17.
C8............ is gasoline
C12....... is kerosene
C16 is diesel
Kind of easy to see that if kerosene, and diesel fall in the middle of the range of mixture, and gasoline at the extreme bottom, Jet fuels are much more similar to diesel and kerosene than anything
Jet fuel is a mixture of hydrocarbons, ranging in carbon chain length from C8, to C17.
C8............ is gasoline
C12....... is kerosene
C16 is diesel
Kind of easy to see that if kerosene, and diesel fall in the middle of the range of mixture, and gasoline at the extreme bottom, Jet fuels are much more similar to diesel and kerosene than anything
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