Steve, Tim, et Listers,
I thought I was pretty clear in the previous postings in this regard, but
if not, let me say again that TDC has been checked versus piston position,
and the timing tape is the CORRECT tape and, finally, the new timing light
with the knob you adjust for alignment at TDC confirms all the previous
measurements I have made over the past 12 years I've been running this
engine (which includes one major overhaul).
So, the best way I can see to find the optimum advance it terms of max
output is to find someone with an accelerometer that would be willing to
let me use it to check acceleration versus timing advance. Anyone in the
San Diego area, Riverside, Orange County, etc. have, or know of anyone who
has one I could use? Failing this, I'll use a stop watch and check my times
between two rpm readings; say between 6,000 - 7,000 rpm. Any volunteers to
do the stop watch times for me? Also, I may call the local dyno places and
talk with people there and see if anyone has seen any engines that run best
with 45 degrees of advance. Anyone else on the List ever seen this phenomenon?
I love a mystery,
Bob
At 10:35 AM 6/6/99 -0700, Steve Laifman wrote:
>Bob,
>
>He is right about timing tapes. The only ones I've
>found for the Ford were made by Mr. Gasket.
>Everybody carries them for the Chevvy, and they are
>different lengths.
>
>I think the tape length formula he is looking for is
>"circumference (length without overlap) = pi times
>the diameter of the balancer.
>
>Pi, bye the bye, was legislated in Tennessee to be
>an even "3", cause it made calculating easier.
>Don't go into any of their State Buildings. {9->
>
>I am sure your use of the crank-back timing light,
>which only demands that TDC be correct, seems to
>validate your tape, if not clear up your mysterious
>performance. I am told, on good authority, that
>your car really "scoots", so it can't be too bad.
>
>Many have been fooled by the markings on the
>distributor advance limit plate markings, which are
>mostly stamped "10 degrees", or just "10". These
>are distributor degrees, and are twice that for
>crankshaft degrees. 10 is 20 degrees advance at the
>crank. This might cause some to over advance the
>static an additional 10 degrees to "compensate" for
>the stock set-up.
>
>Steve
>
>--
>Steve Laifman < Find out what is most >
>B9472289 < important in your life >
> < and don't let it get away!>
>
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