Compression
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Joined: Nov 2007
Posts: 2,081
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From: Wisconsin
Yeah, low compression is better for performance because you can cram more air/fuel into your cylinders. Counter-intuitive, but anyone running a serious pulling truck is running low compression pistons.
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Joined: Nov 2007
Posts: 618
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From: Spokane WA, Family Farm
If anything, raising compression will aid in cold starting behavior. Ever notice how pulling trucks and tractors start on gobs and gobs of ether? It's cause they're running gasser compression ratios. By nature, a compression-ignition engine needs 'compression' to start and run. The higher the better, to a point, of course, as far as starting and running is concerned.
yes but under high boost situations you want to lower compression to compensate for cylider presure, the reason they are using ether is yes because there compresion ratio is between 11 and 15:1 but its also because there runnin 30* of timing, which raises cylinder pressures. i know bigbaddodge is runnin 11:1 compresion with 30* of timing and its turnin 6700 rpm's, god it was fun to watch live
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Sep 30, 2004 12:53 PM