Running Lean = Higher Timing Running Rich = Lower Timing

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Old Dec 19, 2004 | 11:14 AM
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Flr Power's Avatar
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Default Running Lean = Higher Timing, Running Rich = Lower Timing

I was tuning the other day and mistakenly had my AFR going into 12's on low boost (12 psi) and noticed the engine stopped knocking. It just seems that low AFR of 11:1 makes the engine prone to detonation. It seems I can run more timing when running lean.

Anybody experiencing the same?
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Old Dec 19, 2004 | 06:12 PM
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Default Re: Running Lean = Higher Timing, Running Rich = Lower Timing (coocoo32)

Well...
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Old Dec 19, 2004 | 06:19 PM
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Default Re: Running Lean = Higher Timing, Running Rich = Lower Timing (coocoo32)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by coocoo32 &raquo;</TD></TR><TR><TD CLASS="quote">I was tuning the other day and mistakenly had my AFR going into 12's on low boost (12 psi) and noticed the engine stopped knocking. It just seems that low AFR of 11:1 makes the engine prone to detonation. It seems I can run more timing when running lean.

Anybody experiencing the same?</TD></TR></TABLE>

Maybe your not running enough timing.
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Old Dec 19, 2004 | 07:53 PM
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Default Re: Running Lean = Higher Timing, Running Rich = Lower Timing (coocoo32)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by coocoo32 &raquo;</TD></TR><TR><TD CLASS="quote">
Anybody experiencing the same?</TD></TR></TABLE>

no
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Old Dec 19, 2004 | 07:59 PM
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Default Re: Running Lean = Higher Timing, Running Rich = Lower Timing (Del_Slowest)

How much timing are you currently running? Shouldn't knock less when you go leaner. Are you hearing the knock or picking it up on a computer? i.e. setup specs....
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Old Dec 19, 2004 | 10:44 PM
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Default Re: Running Lean = Higher Timing, Running Rich = Lower Timing (XSIintegra)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by XSIintegra &raquo;</TD></TR><TR><TD CLASS="quote">How much timing are you currently running? Shouldn't knock less when you go leaner. Are you hearing the knock or picking it up on a computer? i.e. setup specs....</TD></TR></TABLE>

he's prolly hearing spark blowout, sounds similar to knock.
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