Listers -
If any of you REALLY want to find out what has been going on inside your
combustion chambers, there are fiberscopes available that permit this. I
am using an illuminated fiberscope from Edmund Industrial Optics
(www.edmundoptics.com). It shines a light down the fiber bundle to
illuminate the 'scene' and has a magnifying eyepiece for viewing. I have
found 'nibbling' from pre-ignition that I had no aural cue to expect. Neat
tool!
I have no financial interest in this company, etc., etc.
Clay L.
'67 sprite
At 08:42 PM 1/29/2002 -0500, Robert E. Shlafer wrote:
>Glen:
>
>Not unusual to have this happen at all.
>
>Not sure what boost you are running but
>Aldon (UK) recommends no more than
>24 degrees with an 8.3-1 static compression ratio (aluminum head) using
>a max of 6psi on 93PON (96RON) on my
>1293. Don't know whether this helps or not; hope so!
>
>For what it is worth, I have never heard
>detonation in any of my Series A engines,
>including the one I burned holes in the
>piston crowns running too much advance,
>years ago. It never pinged, either! Spark
>plugs looked OK too, as long as engine
>never got over 5,500 which it hardly ever
>did. But, it got there "enough over time,
>obviously!!
>
>Of course, it had a header and 2 inch
>exhaust running a Cherry Bomb! Gee,
>do'ya think this is why I didn't hear the
>pinging or detonation (Duh!!)?
>
>Live and learn!
>
>
>
>
>Cap'n. Bob
> '61 :{)
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