Gyrobob
Serious Thumper
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Posers ain't motorcyclists
Posts: 2571
Newnan, GA
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Super Thumper wrote on 10/25/13 at 17:21:55:In guess all these aftermarket manufacturers of high performance ignition systems are all wrong. Over 40 years of positive dyno results can't be wrong. More spark energy means more power. I attest to this with firsthand experience in building automobile and motorcycle engines for over 40 years myself. Back in the 60's where I got my start building engines a stock ignition coil put out maybe 20,000 volts. The engines however had compression ratios in some cases over 11.5 to 1. the ignition used to break down once RPM exceeded 5500 to 6000 RPM. Higher voltage coils solved this problem. The Even the automobile manufacturers are now using coil on plug High output ignition systems. High compression engines are most responsive to a strong ignition spark...low compression engines not so much. Look at the newest crop of high compression engines coming from Detroit lately...in some cases compression ratios of 11 to 1 with direct fuel injection are becoming common as are ultra high performance ignitions with spark energy approaching 100,000 volts. Higher compression ratios need a stronger spark. Stronger spark means more power and better fuel economy.
Wether the low compression(8.5 to 1) mildly tuned stock Suzuki Savage engine will see positive results from a better ignition is debatable.
But my Savage is anything but stock.....97mm 10.5 to 1 comp. Big Bore Kit, stage I cam, ported cylinder head performance exhaust and more.
I think my high comp engine will like a hotter spark just like all the high compression engines in the past have.
Serowbot is correct. Once a spark is delivered at the correct time, nothing else matters.
-- Stock ignition systems, especially if getting old, leaky, inconsistent, etc., can be deficient in delivering a strong spark at the correct time. Replacing those marginal components with new stock components will put things back to normal, and on a stock motor, that is as good as it will get. No woven-by-virgins wires, superdupercharger coils, nine-electrode plugs, or organic gluten-free gaskets will make any difference.
-- The point is that the stock system can be improved upon only when it has deteriorated to the point it is not delivering that spark as Serowbot suggests. The Savage ignition system in good shape on a stock motor will not be helped any by additional gadgetry. In fact, the componentry in the stock system is what we used to call a high-performance high-cost system four decades ago. Those were the times when points and coils with no electronics were the norm and the system we have on the Savage would have seemed like pretty exotic stuff.
"More spark energy means more power." This is only true if the existing spark energy is insufficient. On a stock motor with a stock ignition system functioning normally, there is way more than sufficient spark energy. On a hopped up motor like yours, maybe not. Only testing would show any deficiencies or advantages.
"In [sic] guess all these aftermarket manufacturers of high performance ignition systems are all wrong." Not all of them. Some will tell you the truth, i.e., most stock ignition systems these days are quite sufficient for stock motors.
"Wether [sic] the low compression(8.5 to 1) mildly tuned stock Suzuki Savage engine will see positive results from a better ignition is debatable. " Exactly correct,... or,.. well,.. I would suggest not very debatable in that a stock motor with an ignition system in good shape will not see any improvement with aftermarket gadgetry.
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