MikeRJ
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| posted on 14/10/08 at 05:48 PM |
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quote:
Originally posted by iti_uk
Isn't the only reason it doesn't feel as powerful (in normal daily driving) because it can run with more advance on the timing,
There seems to be a general misconception that more advance=more power, which is incorrect. High octane fuels run in engines with lower CR's
tend to burn more slowly, needing a little more advance, but the overall result could easily be less power than a lower octane fuel running with less
advance.
The only way to extract the full benefit of high octane fuels on a normaly aspirated engine is to raise the compression ratio.
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iti_uk
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| posted on 14/10/08 at 07:07 PM |
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quote:
Originally posted by MikeRJ
There seems to be a general misconception that more advance=more power, which is incorrect. High octane fuels run in engines with lower CR's
tend to burn more slowly, needing a little more advance, but the overall result could easily be less power than a lower octane fuel running with less
advance.
The only way to extract the full benefit of high octane fuels on a normaly aspirated engine is to raise the compression ratio.
That's true. But too much retardation can kill engine response, making the engine feel laggy/slow.
quote:
Originally posted by iti_uk
Isn't the only reason it doesn't feel as powerful (in normal daily driving) because it can run with more advance on the timing,
 
Chris
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