Thanks to all for the replies to my query.
The jist is that anything that causes higher than normal combustion
chamber temperatures while the engine is running can cause run-on upon shut
down due to hotter hot spots.
I'm enlightened, and now I can get on with my life.
Healeys Rule!
Jim Smith
----- Original Message -----
From: "Dave & M" <rusd@velocitus.net>
To: "Bluechipracing" <bluechipracing@snet.net>
Cc: "Ned Smith" <smithn00@kitepilot.net>; "Austin-Healey List"
<healeys@autox.team.net>
Sent: Saturday, January 20, 2007 11:44 PM
Subject: Re: More on Run On
> Hi Jim,
>
> I tend to agree. Maybe advanced timing makes the hot spots hotter?
>
> Dave Russell
> BN2
>
> Bluechipracing wrote:
>> I understand how compression ratio, fuel octane and hot spots can
cause
>> run-on, but I fail to understand how ignition timing can have an
>> effect. By definition, run-on occurs after you turn the key off, so
>> since there is no spark to time how can it matter? Can somebody
>> enlighten me?
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