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Can someone explain compression ratios?

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Old Jan 15, 2004 | 07:39 AM
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Nightrider350's Avatar
Nightrider350
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From: Ft. Lauderdale, FL
Car: 1988 Black Firebird
Engine: Chevy 350ci
Transmission: 700 R4
Can someone explain compression ratios?
Can someone explain compression ratios? 9.3:1 vs. 10:1?
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Old Jan 15, 2004 | 08:08 AM
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ede's Avatar
ede
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From: Jackson County
simply it's the amount the A/F mixtured is compressed as the rod and piston move upward, the higher the number the more it's compressed
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Old Jan 15, 2004 | 04:37 PM
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F-BIRD'88
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From: Ontario, Canada
Car: 1988 Firebird S/E
Engine: 406Ci Vortec SBC
Transmission: TH-350/3500stall
Axle/Gears: 7.5" Auburn 4.10 Posi-Traction
It's the difference in volume expressed as a ratio
when the piston is at BDC and TDC.
Attached Thumbnails Can someone explain compression ratios?-cr1.jpg  
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Old Jan 15, 2004 | 05:05 PM
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RB83L69
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From: Loveland, OH, US
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http://auto.howstuffworks.com/engine1.htm
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