bufalobob
Member
very interesting article on how octane & fuel quality affect engine performance. a must read for anyone with engine mods.
go to the link below & click on blog ( r1 turbo bike test ). it's free.
www.dynotechresearch.com/
bob
go to the link below & click on blog ( r1 turbo bike test ). it's free.
www.dynotechresearch.com/
bob
redsnake3
New member
link dont work 
bufalobob
Member
i just tried it & it works???
bob
bob
Link works for me. That is precisely why I try and tell people to not build engines right on the edge of pumpgas/race fuel. the extra couple hp gained do not out weigh the risk. The risk go both ways, the customer loses alot of $$ and the builder loses his reputation, even though it wasnt his fault, it was the fuels low quality!
You never really know what your getting. It doesnt matter if you have used the gas in your car from a paticular gas station for the past 10 years, your car has a detonation sensor, its called a "knock sensor" and can adjust timing to compensate for crappy gas, our sleds dont have that luxury. The 02 srx really was ahead of its time on a 2 smoke anti detonation application.
You never really know what your getting. It doesnt matter if you have used the gas in your car from a paticular gas station for the past 10 years, your car has a detonation sensor, its called a "knock sensor" and can adjust timing to compensate for crappy gas, our sleds dont have that luxury. The 02 srx really was ahead of its time on a 2 smoke anti detonation application.
Intresting!!!!!
redsnake3
New member
ok it works now.
bluemonster1
LIFE MEMBER ONLY ONCE!!!
Octane!!!!!!!!!!!
Take a read:
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.
Take a read:
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.
blumonster it's true compression will make more power but too much compression kils your top end big time you may be fast in 660ft but you lose top end.Many ice and grass motors won't live in a 1/4 mile.
bluemonster1
LIFE MEMBER ONLY ONCE!!!
we will just have to add lead to our gasoline again to gain more.Airplane fuels,100 octane plus still use lead in their fuels.
bluemonster1
LIFE MEMBER ONLY ONCE!!!
only thing about lead,it is no good for the earth.I am here only for a short time,not a long time.
bluemonster1
LIFE MEMBER ONLY ONCE!!!
Octane!!!!!!!!!!
More Again:
Simply put, the octane rating of a fuel determines the propensity to explode
rather than simply burn when mixed with air and ignited. Exploding is bad.
Burning is good. The higher the octane, the more resistant to exploding.
If you are running too low of an octane for your motor, you will get
pinging. Pinging in its extreme form is also known as detonation. The
fuel/air mixture is igniting all at once and exploding instead of igniting
as a flame wave. The resultant "bang" is very hard on the pistons, head,
rods, and cranks. I've seen bent rods, cracked heads, pounded-out crank
bearings, cracked piston skirts, and chainsawed crankcases (*really* bad
thrown rods!).
More Again:
Simply put, the octane rating of a fuel determines the propensity to explode
rather than simply burn when mixed with air and ignited. Exploding is bad.
Burning is good. The higher the octane, the more resistant to exploding.
If you are running too low of an octane for your motor, you will get
pinging. Pinging in its extreme form is also known as detonation. The
fuel/air mixture is igniting all at once and exploding instead of igniting
as a flame wave. The resultant "bang" is very hard on the pistons, head,
rods, and cranks. I've seen bent rods, cracked heads, pounded-out crank
bearings, cracked piston skirts, and chainsawed crankcases (*really* bad
thrown rods!).
bluemonster1
LIFE MEMBER ONLY ONCE!!!
leaded!!!
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:
Currently engineers are trying to develop airplane engines that can use unleaded gasoline. Jet engines burn kerosene, by the way.
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).
Currently engineers are trying to develop airplane engines that can use unleaded gasoline. Jet engines burn kerosene, by the way.