03-24-2008, 10:02 PM
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Registered User
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Join Date: Mar 2006
Location: Adelaide, South Australia
Posts: 646
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 Quote:
Originally Posted by keith_h
Erm, why would you advance the timing??
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with recommended 6 degrees BTDC timing and 93
octane fuel, retarding the spark 4 degrees lowers the octane requirement to 91, whereas advancing it 8 degrees requires 96 octane fuel"
7. What parameters determine octane requirement? (more here)
Ever set up your engine to run PULP, and stuck in normal unleaded then driven up a hill? Noticed the pinging? Thats because the octane rating is too low for that ignition timing, retard the timing and it wont knock
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