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I agree John, John Twist had a good ten tip on this from Univ Motors explaining why and how to do it. It is still up and I was very surprised how much better my GT ran.
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<div class="">paul O</div>
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<div class="">On Apr 25, 2019, at 7:09 AM, John DiFede via Mgs <<a href="mailto:mgs@autox.team.net" class="">mgs@autox.team.net</a>> wrote:</div>
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late to this discussion. </span>
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I look for total advance when timing an engine. If I recall correctly my total advance is about 32 degrees BTDC at 3000 rpm. Set the initial mechanical timing and have distributor advance provide the rest. This usually involves changing the distributor springs
to make the centrifugal advance quicker than factory specs.
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On Apr 25, 2019, at 3:37 AM, PaulHunt73 via Mgs <<a href="mailto:mgs@autox.team.net" class="">mgs@autox.team.net</a>> wrote:<br class="">
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<div class=""><font size="2" class="">Certainly the factory design overall is the compromise you mention, and as said earlier the settings are chosen for a 'worst case' in what can be quite a large variation between engines, plus a safety factor. But given
the components that come with any particular engine (of our era) 'tuning' can only consist of setting the timing and the mixture, and for those there is only one 'correct' setting. Get those right and you will have the best performance and mileage, and by
'right' I mean right for your engine and fuel. That may well mean more advance than book as I found, which gave improved performance AND mileage, with no engine unreliability over the 6 years and 60k I had it..</font></div>
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<div class=""><font size="2" class="">PaulH.</font></div>
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<div class="">You also have to realize that factory specs are a compromise. They are trying to balance performance, mileage engine life and in modern cars, emissions. You can tune it for, let's say mileage, but performance will suffer. Conversely, if you
tune it for performance mileage will suffer. Tune it the way you want it to run.<br class="">
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<p class="MsoNormal" style="margin: 0in 0in 12pt; font-size: 12pt;">Paul Osborne<br class="">
Department of Electrical and Computer Eng<br class="">
University of Rochester <br class="">
201 Hopeman Building RC<br class="">
Rochester NY 14627<br class="">
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<div class="" style="orphans: 2; widows: 2;"><span class="Apple-style-span" style="font-size: 16px;"> 585-275-5226</span><span class="Apple-tab-span" style="white-space: pre;">
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