100+ octane fuel
#12
RE: 100+ octane fuel
oh no. did i get the wrong manual?
If I remember correctly, my F4i (no I don't ride the RR) manual stated something about using 87 octane. I can check tonight though and let you know what I find for my bike. I just checked the service manual I have (pdf) and although it gives a recommended oil, brake fluid, coolant, etc. it doesn't say anything about octane.
#13
RE: 100+ octane fuel
ORIGINAL: Randy91CBR600F2
Higher octane will result in higher performance period.Most people say it doesnt do anything cause they dont buy it.
Higher octane will result in higher performance period.Most people say it doesnt do anything cause they dont buy it.
The only reason most people will think that higher octane = higher performance is because oil companies push the higher octane fuels. 93 octane costs about 3-5 cents per gallon more to refine than 87 octane yet at the pump it'll cost you 20 cents more. Now which one do you think the oil companies want you to purchase? The only advantage the 93 will have is that most oil companies add more detergents to their high priced stuff and that will help you engine. It's cheaper to run the lower octane and add your own detergent around every oil change.
#14
#15
RE: 100+ octane fuel
In the day... I used to run acetone, 1/2 cup per 10 gal, in my hypo vw engines... you could REALLY feel the diff., you knew you got too much, when the exaust would reignite, when "on the stinger"!!!!!!!!!!!! scary!!!!!! it eather "ate" you fuel system gaskets, or no problems, no inbetween !!!!!!
I AM NOT RECOMENDING THIS, TO ANYONE !!!!!!!!!!!!!!!!!!!!!!!
Clean and free, Ripp'n
I AM NOT RECOMENDING THIS, TO ANYONE !!!!!!!!!!!!!!!!!!!!!!!
Clean and free, Ripp'n
#18
RE: 100+ octane fuel
ORIGINAL: Randy91CBR600F2
you trumped one ignorant opinion with another.Instead of any facts you gave your personal opinion.Higher octane fuel burns longer and hotter increasing combustion resulting in higher performance.
you trumped one ignorant opinion with another.Instead of any facts you gave your personal opinion.Higher octane fuel burns longer and hotter increasing combustion resulting in higher performance.
The octane rating of gasoline tells you how much the fuel can be compressed before it spontaneously ignites. When gas ignites by compression rather than because of the spark from the spark plug, it causes knocking in the engine. Knocking can damage an engine, so it is not something you want to have happening. Lower-octane gas (like "regular" 87-octane gasoline) can handle the least amount of compression before igniting.
The compression ratio of your engine determines the octane rating of the gas you must use in the car. One way to increase the horsepower of an engine of a given displacement is to increase its compression ratio. So a "high-performance engine" has a higher compression ratio and requires higher-octane fuel. The advantage of a high compression ratio is that it gives your engine a higher horsepower rating for a given engine weight -- that is what makes the engine "high performance." The disadvantage is that the gasoline for your engine costs more.
The name "octane" comes from the following fact: When you take crude oil and "crack" it in a refinery, you end up getting hydrocarbon chains of different lengths. These different chain lengths can then be separated from each other and blended to form different fuels. For example, you may have heard of methane, propane and butane. All three of them are hydrocarbons. Methane has just a single carbon atom. Propane has three carbon atoms chained together. Butane has four carbon atoms chained together. Pentane has five, hexane has six, heptane has seven and octane has eight carbons chained together.
It turns out that heptane handles compression very poorly. Compress it just a little and it ignites spontaneously. Octane handles compression very well -- you can compress it a lot and nothing happens. Eighty-seven-octane gasoline is gasoline that contains 87-percent octane and 13-percent heptane (or some other combination of fuels that has the same performance of the 87/13 combination of octane/heptane). It spontaneously ignites at a given compression level, and can only be used in engines that do not exceed that compression ratio.
During WWI, it was discovered that you can add a chemical called tetraethyl lead (TEL) to gasoline and significantly improve its octane rating above the octane/heptane combination. Cheaper grades of gasoline could be made usable by adding TEL. This led to the widespread use of "ethyl" or "leaded" gasoline. Unfortunately, the side effects of adding lead to gasoline are:
Lead clogs a catalytic converter and renders it inoperable within minutes.
The Earth became covered in a thin layer of lead, and lead is toxic to many living things (including humans).
When lead was banned, gasoline got more expensive because refineries could not boost the octane ratings of cheaper grades any more. Airplanes are still allowed to use leaded gasoline (known as AvGas), and octane ratings of 100 or more are commonly used in super-high-performance piston airplane engines. In the case of AvGas, 100 is the gasoline's performance rating, not the percentage of actual octane in the gas. The addition of TEL boosts the compression level of the gasoline -- it doesn't add more octane.
The compression ratio of your engine determines the octane rating of the gas you must use in the car. One way to increase the horsepower of an engine of a given displacement is to increase its compression ratio. So a "high-performance engine" has a higher compression ratio and requires higher-octane fuel. The advantage of a high compression ratio is that it gives your engine a higher horsepower rating for a given engine weight -- that is what makes the engine "high performance." The disadvantage is that the gasoline for your engine costs more.
The name "octane" comes from the following fact: When you take crude oil and "crack" it in a refinery, you end up getting hydrocarbon chains of different lengths. These different chain lengths can then be separated from each other and blended to form different fuels. For example, you may have heard of methane, propane and butane. All three of them are hydrocarbons. Methane has just a single carbon atom. Propane has three carbon atoms chained together. Butane has four carbon atoms chained together. Pentane has five, hexane has six, heptane has seven and octane has eight carbons chained together.
It turns out that heptane handles compression very poorly. Compress it just a little and it ignites spontaneously. Octane handles compression very well -- you can compress it a lot and nothing happens. Eighty-seven-octane gasoline is gasoline that contains 87-percent octane and 13-percent heptane (or some other combination of fuels that has the same performance of the 87/13 combination of octane/heptane). It spontaneously ignites at a given compression level, and can only be used in engines that do not exceed that compression ratio.
During WWI, it was discovered that you can add a chemical called tetraethyl lead (TEL) to gasoline and significantly improve its octane rating above the octane/heptane combination. Cheaper grades of gasoline could be made usable by adding TEL. This led to the widespread use of "ethyl" or "leaded" gasoline. Unfortunately, the side effects of adding lead to gasoline are:
Lead clogs a catalytic converter and renders it inoperable within minutes.
The Earth became covered in a thin layer of lead, and lead is toxic to many living things (including humans).
When lead was banned, gasoline got more expensive because refineries could not boost the octane ratings of cheaper grades any more. Airplanes are still allowed to use leaded gasoline (known as AvGas), and octane ratings of 100 or more are commonly used in super-high-performance piston airplane engines. In the case of AvGas, 100 is the gasoline's performance rating, not the percentage of actual octane in the gas. The addition of TEL boosts the compression level of the gasoline -- it doesn't add more octane.
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#20
RE: 100+ octane fuel
ORIGINAL: isolated1523
My '03 600RR says to use 87 octane.
-Adam
My '03 600RR says to use 87 octane.
-Adam
ORIGINAL: ashsammy
I am looking at the cbr600rr6 manual right now, it say: Use unleaded petrol with a research octane number of 91 or higher.
I am looking at the cbr600rr6 manual right now, it say: Use unleaded petrol with a research octane number of 91 or higher.
AND TONIGHT'S MAIN EVENT:
chainstretcher VS. Randy91CBR600F2
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