What happens if you use high octane fuel in a high compression engine?

Engine knock in a 2.2 Chrysler?

what is the compression ratio and recommended gas octane? try a higher octane fuel and see what happens, mileage may go up also.

Is it worth it to use more than 85 octane fuel?

Check your owners manual for fuel recommendations. Unless the engine has a high compression ratio, it will not benefit from higher octane fuel.

Is racing fuel or fuel better for your fourwheeler?

There's no benefit unless you need the Octane. If you have a lot of compression in your engine or is detonation prone, than you can curb it with more octane.

If you run a Honda 50cc dirt bike on 110 octane gas what will happen?

Congratulations you have just added to the Misinformation Superhighway. Stock specs for Hondas is about 10:1 COMPRESSION 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

What is the octane number?

The octane number is a measure of performance of a fuel. It is measured relative to pure isooctane which is given an arbitrary value of 100. It is possible for fuels to have an octane number higher than 100. The higher the octane number the more compression it takes for the fuel to detonate. Higher octane fuel is used usually in high performance vehicles where the engines have higher compression ratios. If the octane number of a fuel isn't high enough it can lead to engine knocking this is where the fuel detonates before the fuel is at its maximum compressive state in the engine, this can cause damage and lower performance.

What happens if you put plus unleaded in a 2006 Jeep grand Cherokee Laredo instead of regular unleaded?

Plus (89 or 91 octane) will nor harm the engine or fuel system on an engine thats call for 87 octane.Plus (89 or 91 octane) will nor harm the engine or fuel system on an engine thats call for 87 octane.

Does compression ratio effect octane requirements?

Yes, the higher the compression ratio, the more octane the fuel has to be. Anything over 10.0:1 has to be 91 or higher. However, if performance is not an issue, than you can use any type of fuel you want, but car will not accelerate fast and its torque curve will be very bad. Using low octane fuel in a high compression engine will also cause knocking (pinging, pinking). This will cause damage if continued.

What was the purpose of adding lead to gasoline?

Lead was added to gasoline to inexpensively increase octane ratings and to also help reduce engine knocking.Increasing octane and reduce engine knocking are exactly the same thing, as the test method to measure octane of a fuel is to see when a standard engine begins knocking. The higher compression ratio the standard test engine can be operated at without knocking, the higher the octane of the fuel being tested.

What is high octane fuel?

Regular unleaded fuel is 87 octane. High octane fuel is any fuel higher than regular. 89 and 91 octane being the most common the consumer can buy. High octane fuel is not needed in most cars and is a waste of money if your car does not need it. It provides no benefit whatsoever in a vehicle designed to run on Regular. Octane is only a measure of how well the fuel prevents pre-detonation in a high compression engine.

Can regular unleaded fuel be used in a 2002 Lincoln con. without harming engine?

regular unleaded fuel is safe for every gasoline car engine. the only difference is more watered down and less octane, which means less power for the punch. But the prices are so high I dont care. I can fill my tank for $40.00 of regular and put in a bottle of octane boost for $2.00 and then I have super unleaded. But its up to you on how picky you are. WRONG!!!!!!!!! The above answer is totally incorrect, and it is not about being picky. it is about being smart. Regular unleaded is not water down, and does not provide less power. It does contain less octane, which is why it is not safe to use in every gasoline engine. It is a myth that a higher octane fuel provides more power and better mpg. 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", and that is why the myth persists that a higher octane fuel increases power. The disadvantage is that the gasoline for your engine costs more. But the fact is that your Lincoln requires 91 Octane Premium Fuel, and you should have know this when you bought it. Burning a lower octane fuel will in time damage your engine. The above poster may not care, but I bet you do. Your car holds 18 gallons of fuel. It is not cost effective to spend $2.00 for a can of octane boost, which would be more than the cost difference of premium fuel. Do not burn any fuel in this engine with less than a 91 octane rating, or you will end up with engine damage.

What grade of gasoline does a Chevy Beretta engine use?

All Beretta engines (with the exception of the Quad 4) are designed to run on regular (87 octane) gasoline. You should not need to use a higher octane fuel unless you have modified the engine internals and increased the compression ratio.The Quad 4 engine runs on premium (92+ octane) fuel.

What is the recommened fuel octane for the 1977 Corvette 350 L-82 engine?

L-82 had more compression than L-48. Probably not wise to use less than 89 octane. minimum of 87 octane