What is the benifit, if any, of having a low compression ratio (below 9)?

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Answers:

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A higher compression ratio engine will require a higher octane gasoline (more expensive) the lower compression engine will be able to run a lower octane gasoline (cheaper). If you run a lower octane gas in a high compression engine you will have problems with spark knock (or detonation) which will over time erode the piston(s) surface and ultimately wear a hole though the pistons(s). For the most part unless you are using the auto in a racing endeavor the lower compression ratios will be cheaper to run and longer lived.

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How come buses dont need seatbelts??

you can burn a less costly grade of fuel.

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Is chrome tint legal in PA.?

none

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I have a question about towing a car during the daytime.?

You can run lower octane fuel without damaging your engine

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on a motorcycle it makes it easier to kickstart

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NYS Laws!!?

You can use cheaper gas, and if you decide to convert this to a blower(supercharged) motor, it works better with low compression.Turbos are great but most people wouldrather get the (other). Almost a little joke there.

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