<VV> Octane/Ping

[Eric S. Eberhard]

Hmmm ... my 62 102hp with Judson and PG pings only at low rpm in high gear 
and moderate throttle.   Full throttle or anything in low gear is OK.  I am 
running 13 degrees advance (vs 14 recommended) as the Judson instructions 
say to run stock advance.  However, I also live at 3500 feet and generally 
find all my cars 1 degree less to be about right.  I do know that if I 
retard the ignition a lot (8 degrees) it does not knock.  Affects 
performance considerably not in my favor .

I have considered the Knock Eliminator as discussed earlier ... but you 
remember the recent post on the definition of "cheap" :-)

I also have been considering changing the vacuum advance to the 
pressure/retard (Dale) for a turbo and/or changing the distributor to a 
Spyder distributor (with the Dale unit).  However, given that the cam is 
different and so forth, I don't know if this will help or not.

Any technical enlightenment/suggestions would help!  Thanks.

At 11:14 AM 6/21/2005, Levair at aol.com wrote:
>In a message dated 6/20/05 11:56:55 PM Eastern Daylight Time, pp2 at 6007.us
>writes:
>
><< Distributors are a kludge just like carburetors and we are always
>  compensating for them. Years ago when I worked for Delco Remy I studied a
>  lot of curves and found that it was more of a few basic sets of weights and
>  make them work with the engine. Curves were really more like steps and "all
>  in early" was common.
>   >>
>Putting in a distributor from a 95 hp std. trans engine will usually solve
>the ping problem in 140s. The 140 has a very fast advance curve and the 95 
>has a
>very slow one.
>
>Warren
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Eric S. Eberhard
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